Configuration Directive List


FAQ
Table of Contents
1. List of Directives
AccessDenyMsg -- Customise the response on failed authentication
AccessGrantMsg -- Customise the response on successful authentication
Allow -- Access control directive
AllowAll -- Allow all clients
AllowChmod -- Enable the CHMOD command (deprecated)
AllowFilter -- Regular expression of command arguments to be accepted
AllowForeignAddress -- Control the use of the PORT command
AllowGroup -- Group based allow rules
Allow -- Permit logging to symlinked files
AllowOverride -- Toggles handling of .ftpaccess files
AllowOverwrite -- Enable files to be overwritten
AllowRetrieveRestart -- Allow clients to resume downloads
AllowStoreRestart -- Allow clients to resume uploads
AllowUser -- User based allow rules
AnonRatio -- Ratio directive
AnonRequirePassword -- Make anonymous users supply a valid password
Anonymous -- Define an anonymous server
AnonymousGroup -- Treat group members as anonymous users
AuthAliasOnly -- Allow only aliased login names
AuthGroupFile -- Specify alternate group file
AuthOrder -- Configure auth module checking order
AuthPAM -- Enable/Disable PAM authentication
AuthPAMAuthoritative -- Set whether PAM is the authoritive authentication scheme
AuthPAMConfig -- Select PAM service name
AuthUserFile -- Specify alternate passwd file
AuthUsingAlias -- Authenticate via Alias-name instead of mapped username
Bind -- Bind the server or Virtualhost to a specific IP address
ByteRatioErrMsg -- Ratio directive
CDPath -- Sets "search paths" for the cd command
CapabilitiesEngine -- Enable/disable mod_cap
CapabilitiesSet -- Configure the set of Linux capabilities processed
Class -- Definition statements for class based tracking
Classes -- Enable Class based connection tracking
CommandBufferSize -- Limit the maximum command length
CreateHome -- Create and populate users' home directories as needed
CwdRatioMsg -- Ratio directive
DebugLevel -- Set the debugging output level
DefaultAddress -- Set the address for the server to listen on
DefaultChdir -- Set starting directory for FTP sessions
DefaultRoot -- Sets default chroot directory
DefaultServer -- Set the default server
DefaultTransferMode -- Set the default method of data transfer
DeferWelcome -- Don't show welcome message until user has authenticated
Define -- Initialises Defines for IfDefine
DeleteAbortedStores -- Enable automatic deletion of partially uploaded files
Deny -- Access control directive
DenyAll -- Deny all clients
DenyFilter -- Regular expression of command arguments to be blocked
DenyGroup -- Group based deny rules
DenyUser -- User based deny rules
DirFakeGroup -- Hide real file/directory group
DirFakeMode -- Hide real file/directory permissions
DirFakeUser -- Hide real file/directory owner
Directory -- FIXME FIXME
DisplayConnect -- Sets connect banner file
DisplayFirstChdir -- Set the file to display when first entering a directory
DisplayGoAway -- Set the file to display to a rejected connection
DisplayLogin -- Set the file to display on login
DisplayQuit -- Set the file to display on quit
DisplayReadme -- Enable display of file modification times on a file pattern
ExtendedLog -- FIXME FIXME
FileRatioErrMsg -- FIXME FIXME
FooBarDirective -- Dummy directive
Global -- Set some directives to apply across the entire daemon
Group -- Set the group the server normally runs as
GroupOwner -- FIXME FIXME
GroupPassword -- FIXME FIXME
GroupRatio -- Ratio directive
HiddenStor -- Enables more safe file uploads
HiddenStores -- FIXFIXFIX
HideFiles -- Enable hiding of files based on regular expressions
HideGroup -- Enable hiding of files based on group owner
HideNoAccess -- Block the listing of directory entries to which the user has no access permissions
HideUser -- FIXME FIXME
HostRatio -- Ratio directive
IdentLookups -- Toggle ident lookups
IfDefine -- To control the use of sections of the configuration
IfModule -- Parse a section of config based on module name
IgnoreHidden -- Treat 'hidden' files as if they don't exist
Include -- Load additional configuration directives from a file
LDAPAuthBinds -- FIXME FIXME
LDAPDNInfo -- Set DN information to be used for initial bind
LDAPDefaultAuthScheme --  Set the authentication scheme/hash that is used when no leading {hashname} is present.
LDAPDefaultGID --  Set the default GID to be assigned to users when no uidNumber attribute is found.
LDAPDefaultUID --  Set the default GID to be assigned to users when no uidNumber attribute is found.
LDAPDoAuth -- Enable LDAP authentication
LDAPDoGIDLookups --  Enable LDAP lookups for user group membership and GIDs in directory listings
LDAPDoUIDLookups --  Enable LDAP lookups for UIDs in directory listings
LDAPForceDefaultGID -- Force all LDAP-authenticated users to use the same GID.
LDAPForceDefaultUID -- Force all LDAP-authenticated users to use the same UID.
LDAPForceHomedirOnDemand --  Force all LDAP-authenticated users to use the default HomeDironDemand prefix/suffix.
LDAPHomedirOnDemand --  Enable the creation of user home directories on demand
LDAPHomedirOnDemandPrefix --  Enable the creation of user home directories on demand
LDAPHomedirOnDemandPrefixNoUsername -- FIXFIXFIX
LDAPHomedirOnDemandSuffix --  Specify an additional directory to be created inside a user's home directory on demand.
LDAPNegativeCache -- Enable negative caching for LDAP lookups
LDAPQueryTimeout -- Set a timeout for LDAP queries
LDAPSearchScope -- Specify the search scope used in LDAP queries
LDAPServer -- Specify the LDAP server to use for lookups
LDAPUseTLS -- Enable TLS/SSL connections to the LDAP server.
LeechRatioMsg -- Sets the 'over ratio' error message
Limit -- Set the commands/actions to be controlled
ListOptions -- Configure options used when listing directories
LogFormat -- Specify a logging format
LoginPasswordPrompt -- FIXME FIXME
LsDefaultOptions -- FIXME FIXME
MasqueradeAddress -- Configure the server address presented to clients
MaxClients -- Limits the number of users that can connect
MaxClientsPerHost -- Limits the connections per client machine
MaxClientsPerUser -- Limit the number of connections per userid
MaxConnectionRate -- Maximum TCP socket connection rate
MaxHostsPerUser -- Limit the number of connections per userid
MaxInstances -- Sets the maximum number of child processes to be spawned
MaxLoginAttempts -- Sets how many password attempts are allowed before disconnection
MaxRetrieveFileSize -- Restrict size of downloaded files
MaxStoreFileSize -- Restrict size of uploaded files
MultilineRFC2228 -- Enable RFC2228 multiline response mode
MySQLInfo -- Configures the MySQL driver
Order -- Configures the precedence of the Limit directives
PassivePorts -- Specify the ftp-data port range to be used
PathAllowFilter -- FIXME FIXME
PathDenyFilter -- FIXME FIXME
PersistentPasswd -- FIXME FIXME
PidFile -- Set the filepath to hold the pid of the master server
Port -- Set the port for the control socket
PostgresInfo -- Postgres backend configuration (Deprecated)
PostgresPort -- Sets the port postgres is listening on
RLimitCPU -- Configure the maximum CPU time in seconds used by a process
RLimitMemory -- Configure the maximum memory in bytes used by a process
RLimitOpenFiles -- Configure the maximum number of open files used by a process
RadiusAcctServer -- Setup RADIUS accounting details
RadiusAuthServer -- Setup RADIUS authenticator details
RadiusEngine -- Enable RADIUS support
RadiusLog -- Specify the logfile for reporting / debugging
RadiusRealm -- Setup the authentication realm
RadiusUserInfo -- Configure login information via RADIUS
RateReadBPS -- FIXME FIXME
RateReadFreeBytes -- FIXME FIXME
RateReadHardBPS -- FIXME FIXME
RateWriteBPS -- FIXME FIXME
RateWriteFreeBytes -- FIXME FIXME
RateWriteHardBPS -- FIXME FIXME
RatioFile -- Ratio directive
RatioTempFile -- Ratio directive
Ratios -- FIXME FIXME
RequireValidShell -- Allow connections based on /etc/shells
RootLogin -- Permit root user logins
SQLAuthTypes -- FIXME FIXME
SQLAuthenticate --  Specify authentication methods and what to authenticate
SQLAuthoritative -- Deprecated
SQLConnectInfo -- FIXME FIXME
SQLDefaultGID -- FIXME FIXME
SQLDefaultHomedir -- FIXFIXFIX
SQLDefaultUID -- FIXME FIXME
SQLDoAuth -- Deprecated
SQLDoGroupAuth -- Deprecated
SQLEmptyPasswords -- Allow zero length passwords (DEPRECATED)
SQLEncryptedPasswords -- Assume SQL passwords are encrypted (DEPRECATED)
SQLGidField -- Set the field holding gid information (deprecated)
SQLGroupGIDField -- Deprecated
SQLGroupInfo -- FIXFIXFIX
SQLGroupMembersField -- Deprecated
SQLGroupTable -- Deprecated
SQLGroupWhereClause -- FIXFIXFIX
SQLGroupnameField -- Deprecated
SQLHomedir -- Deprecated
SQLHomedirField -- Deprecated
SQLHomedirOnDemand -- FIXME FIXME
SQLLog -- FIXFIXFIX
SQLLogDirs -- Deprecated
SQLLogHits -- Deprecated
SQLLogHosts -- Deprecated
SQLLogStats -- Deprecated
SQLLoginCountField -- Deprecated
SQLMinID -- FIXME FIXME
SQLMinUserGID -- FIXFIXFIX
SQLMinUserUID -- FIXFIXFIX
SQLNamedQuery -- FIXFIXFIX
SQLNegativeCache -- Enable negative caching for SQL lookups
SQLPasswordField -- Deprecated
SQLProcessGrEnt -- Deprecated
SQLProcessPwEnt -- Deprecated
SQLRatioStats -- FIXFIXFIX
SQLRatios -- FIXFIXFIX
SQLSSLHashedPasswords -- FIXME FIXME
SQLScrambledPasswords -- FIXME FIXME
SQLShellField -- Deprecated
SQLShowInfo -- FIXFIXFIX
SQLUidField -- Set the field holding uid information (deprecated)
SQLUserInfo -- FIXFIXFIX
SQLUserTable -- Deprecated
SQLUserWhereClause -- FIXFIXFIX
SQLUsernameField -- Deprecated
SQLWhereClause -- FIXME FIXME
SaveRatios -- FIXME FIXME
ScoreboardFile -- Sets the name and path of the scoreboard file
ServerAdmin -- Set the address for the server admin
ServerIdent -- Set the message displayed on connect
ServerLog -- Configure logs on a per-server basis
ServerName -- Configure the name displayed to connecting users
ServerType -- Set the mode proftpd runs in
ShowDotFiles -- Toggle display of 'dotfiles'
ShowSymlinks -- Toggle the display of symlinks
SocketBindTight -- Controls how TCP/IP sockets are created
StoreUniquePrefix -- Set the prefix to be added to uniquely generated filenames
SyslogFacility -- Set the facility level used for logging
SyslogLevel -- Set the verbosity level of system logging
SystemLog -- Redirect syslogging to a file
TCPAccessFiles -- Sets the access files to use
TCPAccessSyslogLevels -- Sets the logging levels for mod_wrap
TCPGroupAccessFiles -- Sets the access files to use
TCPServiceName -- Configures the name proftpd will use with mod_wrap
TCPUserAccessFiles -- Sets the access files to use
TimeoutIdle -- Sets the idle connection timeout
TimeoutLogin -- Sets the login timeout
TimeoutNoTransfer -- Sets the connection without transfer timeout
TimeoutSession -- Sets a timeout for an entire session
TimeoutStalled -- Sets the timeout on stalled downloads
TimesGMT -- Toggle time display between GMT and local
TransferLog -- Specify the path to the transfer log
TransferRate -- Configure upload, download transfer rates
Umask -- Set the default Umask
UseFtpUsers -- Block based on /etc/ftpusers
UseGlobbing -- Toggles use of glob() functionality
UseReverseDNS -- Toggle rDNS lookups
User -- Set the user the daemon will run as
UserAlias -- Alias a username to a system user
UserDirRoot -- Set the chroot directory to a subdirectory of the anonymous server
UserOwner -- Set the user ownership of new files / directories
UserPassword -- Creates a hardcoded username/password pair
UserRatio -- Ratio directive
VirtualHost -- Define a virtual ftp server
WtmpLog -- Toggle logging to wtmp
tcpBackLog -- Control the tcp backlog in standalone mode
tcpNoDelay -- Control the use of TCP_NODELAY
tcpReceiveWindow -- Set the size of the tcp receive window
tcpSendWindow -- Set the size of the tcp send window
2. List of modules
mod_auth -- Authentication module
 -- 
mod_core -- Core module
mod_ldap -- LDAP authentication support
mod_log -- Logging support
mod_ls -- file listing functionality
mod_pam -- Pluggable authentication modules support
mod_radius -- RADIUS based authentication support
mod_ratio -- FIX ME FIX ME
mod_readme -- "README" file support
mod_sample -- Example module
mod_site -- FIX ME FIX ME
mod_sql -- SQL support module
mod_unixpw -- UNIX style authentication methods
mod_wrap -- Interface to libwrap
mod_xfer -- FIX ME FIX ME
3. List of configuration contexts
server config -- server config
Global -- Global
VirtualHost -- VirtualHost
Anonymous -- Anonymous
Limit -- Limit
.ftpaccess -- .ftpaccess

Chapter 1. List of Directives

AccessDenyMsg

Name

AccessDenyMsg -- Customise the response on failed authentication

Synopsis

AccessDenyMsg [ "message"]

Default

Dependent on login type

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

1.2.2 and later

Description

Normally, a 530 response message is sent to an FTP client immediately after a failed authentication attempt, with a standard message indicating the the reason of failure. In the case of a wrong password, the reason is usually "Login incorrect." It is this message can be customized with the AccessDenyMsg directive. In the message argument, the magic cookie '%u' is replaced with the username specified by the client during login.

See also

Examples

AccessDenyMsg "Guest access denied for %u."

AccessGrantMsg

Name

AccessGrantMsg -- Customise the response on successful authentication

Synopsis

AccessGrantMsg [ "message"]

Default

Dependent on login type

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

0.99.0pl5 and later

Description

Normally, a 230 response message is sent to an FTP client immediately after authentication, with a standard message indicating that the user has either logged in or that anonymous access has been granted. This message can be customized with the AccessGrantMsg directive. In the message argument, the magic cookie '%u' is replaced with the username specified by the client during login.

See also

Examples

AccessGrantMsg "Guest access granted for %u."

Allow

Name

Allow -- Access control directive

Synopsis

Allow [ ["from"] "all"|"none"|host|network[,host|network[,...]]]

Default

Allow from all

Context

<Limit>

Module

mod_core

Compatibility

0.99.0pl6 and later

Description

The Allow directive is used inside a <Limit> context to explicitly specify which hosts and/or networks have access to the commands or operations being limited. Allow is typically used in conjunction with Order and Deny in order to create sophisticated (or perhaps not-so-sophisticated) access control rules. Allow takes an optional first argument; the keyword from. Using from is purely cosmetic. The remaining arguments are expected to be a list of hosts and networks which will be explicitly granted access. The magic keyword all can be used to indicate that all hosts will explicitly be granted access (analogous to the AllowAll directive, except with a lower priority). Additionally, the magic keyword none can be used to indicate that no hosts or networks will be explicitly granted access (although this does not prevent them from implicitly being granted access). If all or none is used, no other hosts or networks can be supplied. Host and network addresses can be specified by name or numeric address. For security reasons, it is recommended that all address information be supplied numerically. Relying solely on named addresses causes security to depend a great deal upon DNS servers which may themselves be vulnerable to attack or spoofing. Numeric addresses which specify an entire network should end in a trailing period (i.e. 10.0.0. for the entire 10.0.0 subnet). Named address which specify an entire network should begin with a trailing period (i.e. .proftpd.net for the entire proftpd.net domain).

See also

Allow Order Limit

Examples

<Limit LOGIN>
Order allow,deny
Allow from 128.44.26.,128.44.26.,myhost.mydomain.edu,.trusted-domain.org
Deny from all
</Limit>

AllowAll

Name

AllowAll -- Allow all clients

Synopsis

AllowAll [ AllowAll]

Default

Default is to implicitly AllowAll, but not explicitly

Context

<Directory>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_core

Compatibility

0.99.0 and later

Description

The AllowAll directive explicitly allows access to a <Directory>, <Anonymous> or <Limit> block. Although proftpd's default behavior is to allow access to a particular object, the default is an implicit allow. AllowAll creates an explicit allow, overriding any higher level denial directives.

See also

DenyAll

Examples

AllowChmod

Name

AllowChmod -- Enable the CHMOD command (deprecated)

Synopsis

AllowChmod [ on|off]

Default

true

Context

server config, <Directory>, <Global>, <VirtualHost>, <Anonymous>, .ftpaccess

Module

mod_site

Compatibility

1.2.0rc1 thru 1.2.5, removed in 1.2.6rc1

Description

This directive is deprecated, please use >Limit SITE_CHMOD< instead.

AllowChmod allows control over whether the "SITE CHMOD" command is allowed to clients.

See also

Examples

AllowChmod false

AllowFilter

Name

AllowFilter -- Regular expression of command arguments to be accepted

Synopsis

AllowFilter [ regular-expression]

Default

None

Context

server config, <VirtualHost>, <Global>, <Anonymous>, <Directoryl>, .ftpaccess

Module

mod_core

Compatibility

1.2.0pre7 and later

Description

AllowFilter allows the configuration of a regular expression that must be matched for all command arguments sent to ProFTPD. It is extremely useful in controlling what characters may be sent in a command to ProFTPD, preventing some possible types of attacks against ProFTPD. The regular expression is applied against the arguments to the command sent by the client, so care must be taken when creating a proper regex. Commands that fail the regex match result in a "Forbidden command" error being returned to the client. If the regular-expression argument contains whitespace, it must be enclosed in quotes.

See also

DenyFilter

Examples

# Only allow commands containing alphanumeric characters and whitespace
AllowFilter "^[a-zA-Z0-9 ,]*$"

AllowForeignAddress

Name

AllowForeignAddress -- Control the use of the PORT command

Synopsis

AllowForeignAddress [ on|off]

Default

AllowForeignAddress off

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

1.1.7 and later

Description

Normally, proftpd disallows clients from using the ftp PORT command with anything other than their own address (the source address of the ftp control connection), as well as preventing the use of PORT to specify a low-numbered (< 1024) port. In either case, the client is sent an "Invalid port" error and a message is syslog'd indicating either "address mismatch" or "bounce attack". By enabling this directive, proftpd will allow clients to transmit foreign data connection addresses that do not match the client's address. This allows such tricks as permitting a client to transfer a file between two FTP servers without involving itself in the actual data connection. Generally it's considered a bad idea, security-wise, to permit this sort of thing. AllowForeignAddress only affects data connection addresses; not tcp ports. There is no way (and no valid reason) to allow a client to use a low-numbered port in its PORT command.

See also

Examples

AllowGroup

Name

AllowGroup -- Group based allow rules

Synopsis

AllowGroup [ group-expression]

Default

None

Context

<Limit>

Module

mod_core

Compatibility

1.1.1 and later

Description

AllowGroup specifies a group-expression that is specifically permitted within the context of the <Limit> block it is applied to. group-expression has the same format as that used in DefaultRoot, in that it should contain a comma separated list of groups or "not" groups (by prefixing a group name with the `!' character) that are to be allowed access to the block. The expression is parsed as a boolean "and" list, meaning that ALL elements of the expression must evaluate to logically true in order for the explicit allow to apply.

Examples

Allow

Name

AllowLogSymlinks -- Permit logging to symlinked files

Synopsis

AllowLogSymlinks [ "on"|"off"]

Default

AllowLogSymlinks off

Context

server config, <VirtualHost>, <Global>

Module

mod_log

Compatibility

1.2.2rc2 and later

Description

By default, the server will the path of any configured SystemLog, any configured TransferLogs, and any configured ExtendedLogs to see if they are symbolic links. If the paths are symbolic links, the server will refuse to log to that link unless explicitly configured to do so via this directive.

Security note:

Security note: this behaviour should not be allowed unless for a very good reason. By allowing the server to open symbolic links with its root privileges, you are allowing a potential symlink attack where the server could be tricked into overwriting arbitrary system files. You have been warned.

See also

Examples

AllowLogSymlinks on

AllowOverride

Name

AllowOverride -- Toggles handling of .ftpaccess files

Synopsis

AllowOverride [ on|off ["user"|"group"|"class" expression]]

Default

on

Context

server config, <Global>, <VirtualHost>, <Anonymous>

Module

mod_core

Compatibility

1.2.7rc1 and later

Description

Normally, the server will look for and parse any files in the encountered directories called ".ftpaccess". The files provide a functionality similar to Apache's .htaccess files -- mini-configuration files. This directive controls when those .ftpaccess files will be parsed.

The optional parameters are used to restrict the use of .ftpaccess files only to specific users. If the "user" restriction is given, then expression is a user-expression specifying to which users the rule applies. Similarly for the "group" restriction. For the "class" restriction, the expression is simply the name of connection class for whom the rule will apply.

See also

AllowOverwrite

Name

AllowOverwrite -- Enable files to be overwritten

Synopsis

AllowOverwrite [ on|off]

Default

AllowOverwrite off

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>, .ftpaccess

Module

mod_xfer

Compatibility

0.99.0 and later

Description

The AllowOverwrite directive permits newly transfered files to overwrite existing files. By default, ftp clients cannot overwrite existing files.

See also

Examples

AllowRetrieveRestart

Name

AllowRetrieveRestart -- Allow clients to resume downloads

Synopsis

AllowRetrieveRestart [ on|off]

Default

AllowRetrieveRestart on

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>, .ftpaccess

Module

mod_core

Compatibility

0.99.0 and later

Description

The AllowRetrieveRestart directive permits or denies clients from performing "restart" retrieve file transfers via the FTP REST command. By default this is enabled, so that clients may resume interrupted file transfers at a later time without losing previously collected data.

Examples

AllowStoreRestart

Name

AllowStoreRestart -- Allow clients to resume uploads

Synopsis

AllowStoreRestart [ on|off]

Default

AllowStoreRestart off

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>, .ftpaccess

Module

mod_core

Compatibility

0.99.0 and later

Description

The AllowStoreRestart directive permits or denies clients from "restarting" interrupted store file transfers (those sent from client to server). By default restarting (via the REST command) is not permitted when sending files to the server. Care should be taken to disallow anonymous ftp "incoming" transfers to be restarted, as this will allow clients to corrupt or increase the size of previously stored files (even if not their own).

The REST (Restart STOR) command is automatically blocked when HiddenStor is enabled, with the server returning a 501 error code to the client.

Examples

AllowUser

Name

AllowUser -- User based allow rules

Synopsis

AllowUser [ user-expression]

Default

None

Context

<Limit>

Module

mod_core

Compatibility

1.1.7 and later

Description

AllowUser specifies a user-expression that is specifically permitted access within the context of the <Limit> block it is applied to. user-expression has a similar syntax as that used in AllowGroup, in that it should contain a comma delimited list of users or "not" users (by prefixing a user name with the `!' character) that are to be allowed access to the block. The expression is parsed as a boolean "and" list, meaning that ALL elements of the expression must evaluate to logically true in order to the explicit allow to apply.

Examples

AnonRatio

Name

AnonRatio -- Ratio directive

Synopsis

AnonRatio [ foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The AnonRatio directive ....

See also

AnonRatio

Examples

AnonRequirePassword

Name

AnonRequirePassword -- Make anonymous users supply a valid password

Synopsis

AnonRequirePassword [ on|off]

Default

AnonRequirePassword off

Context

<Anonymous>

Module

mod_auth

Compatibility

0.99.0 and later

Description

Normally, anonymous FTP logins do not require the client to authenticate themselves via the normal method of a transmitted cleartext password which is hashed and matched against an existing system user's password. Instead, anonymous logins are expected to enter their e-mail address when prompted for a password. Enabling the AnonRequirePassword directive requires anonymous logins to enter a valid password which must match the password of the user that the anonymous daemon runs as. However using AuthUsingAlias authentication can be matched against the password of the login username. This can be used to create "guest" accounts, which function exactly as normal anonymous logins do (and thus present a "chrooted" protected file system to the client), but require a valid password on the server's host system.

Examples

Example of a "guest" account configuration:
<Anonymous ~roger>
User roger
Group other
UserAlias proftpd roger
AnonRequirePassword on
# Deny write operations to all directories, underneath root-dir
# Default is to allow, so we don't need a <Limit> for read operations.
<Directory *>
<Limit WRITE>
DenyAll
</Limit>
</Directory>
# Deny all read/write operations in incoming. Because these are command-group
# limits, we can explicitly permit certain operations which will take precedence
# over our group limit.
<Directory incoming>
<Limit READ WRITE>
DenyAll
</Limit>
# The only command allowed in incoming is STOR (transfer file from client 
to server)
<Limit STOR>
AllowAll
</Limit>
</Directory>
</Anonymous>

Anonymous

Name

Anonymous -- Define an anonymous server

Synopsis

Anonymous [ root-directory]

Default

None

Context

server config,<VirtualHost>, <Global>

Module

mod_core

Compatibility

0.99.0 and later

Description

The Anonymous configuration block is used to create an anonymous FTP login, and is terminated by a matching </Anonymous> directive. The root-directory parameters specifies which directory the daemon will first chdir to, and then chroot, immediately after login. Once the chroot operation successfully completes, higher level directories are no longer accessible to the running child daemon (and thus the logged in user). By default, proftpd assumes an anonymous login if the remote client attempts to login as the currently running user; unless the current user is root, in which case anonymous logins are not allowed regardless of the presence of an <Anonymous> block. To force anonymous logins to be bound to a user other than the current user, see the User and Group directives. In addition, if a User or Group directive is present in an <Anonymous> block, the daemon permanently switches to the specified uid/gid before chroot()ing. Normally, anonymous logins are not required to authenticate with a password, but are expected to enter a valid e-mail address in place of a normal password (which is logged). If this behavior is undesirable for a given <Anonymous> configuration block, it can be overridden via the AnonRequirePassword directive.

Note: Chroot()ed anonymous directories do not need to have supplemental system files in them, nor do they need to have any sort of specific directory structure. This is because proftpd is designed to acquire as much system information as possible before the chroot, and to leave open those files which are needed for normal operation and reside outside the new root directory.

See also

Examples

Example of a typical anonymous FTP configuration:
<Anonymous /home/ftp>
User ftp # After anonymous login, daemon runs as user ftp.
Group ftp # After anonymous login, daemon runs as group ftp.
UserAlias anonymous ftp # Client login as 'anonymous' is aliased to 'ftp'.
# Deny write operations to all directories, underneath root-dir
# Default is to allow, so we don't need a <Limit> for read operations.
<Directory *>
<Limit WRITE>
DenyAll
</Limit>
</Directory>
<Directory incoming>
<Limit READ WRITE>
DenyAll
</Limit>
<Limit STOR>
AllowAll
</Limit>
</Directory>
</Anonymous>

AnonymousGroup

Name

AnonymousGroup -- Treat group members as anonymous users

Synopsis

AnonymousGroup [ group-expression]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.1.3 and later

Description

The AnonymousGroup directive specifies a group-expression to which all matching users will be considered anonymous logins. The group-expression argument is a boolean logically ANDed list of groups to which the user must be a member of (or non-member if the group name is prefixed with a `!' character). For more information on group-expressions see the DefaultRoot directive. If the authenticating user is matched by an AnonymousGroup directive, no valid password is required, and a special dynamic anonymous configuration is created, with the user's home directory as the default root directory. If a DefaultRoot directive also applies to the user, this directory is used instead of the user's home dir. Great care should be taken when using AnonymousGroup, as improper configuration can open up user home directories to full read/write access to the entire world.

Examples

AuthAliasOnly

Name

AuthAliasOnly -- Allow only aliased login names

Synopsis

AuthAliasOnly [ on|off]

Default

AuthAliasOnly off

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

1.1.3 and later

Description

AuthAliasOnly restricts authentication to "aliased" logins only; i.e. those usernames provided by clients which are "mapped" to a real userid by the UserAlias directive. Turning AuthAliasOnly `on' in a particular context will cause proftpd to completely ignore all non-aliased logins for the entire context. If no contexts are available without AuthAliasOnly set to `on', proftpd rejects the client login and sends an appropriate message to syslog.

Examples

AuthGroupFile

Name

AuthGroupFile -- Specify alternate group file

Synopsis

AuthGroupFile [ path]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_unixpw

Compatibility

1.0.3/1.1.1 and later

Description

AuthGroupFile specifies an alternate groups file, having the same format as the system /etc/group file, and if specified is used during authentication and group lookups for directory/access control operations. The path argument should be the full path to the specified file. AuthGroupFile can be configured on a per-VirtualHost basis, so that virtual FTP servers can each have their own authentication database (most often used in conjunction with AuthUserFile).

Note that this file need not reside inside a chroot()ed directory structure for Anonymous or DefaultRoot logins, as it is held open for the duration of client connections.

See also

AuthUserFile

Examples

AuthOrder

Name

AuthOrder -- Configure auth module checking order

Synopsis

AuthOrder [ module-name...]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.8rc1 and later

Description

The AuthOrder directive rebuilds the tables of modules' authentication functions, reordering the tables such that only the listed modules' authentication functions are used, in the order in which the modules are listed.

At least one module name must be given; there is no maximum number of modules that can be listed. The listed module names must the full name of the source file, e.g. "mod_auth_unix.c".

Examples

# If the user's information is not in LDAP, they're not a user to use # this server. AuthOrder mod_ldap.c

# Use SQL tables first, then LDAP, for authentication AuthOrder mod_sql.c mod_ldap.c

AuthPAM

Name

AuthPAM -- Enable/Disable PAM authentication

Synopsis

AuthPAM [ on|off]

Default

on

Context

server config,<VirtualHost>, <Global>

Module

mod_pam

Compatibility

1.2.0rc1 and later

Description

This directive determines whether PAM is used as an authentication method by ProFTPD. Enabled by default to fit in with the design policy of using PAM as the primary authentication mechanism.

See also

Examples

AuthPAMAuthoritative

Name

AuthPAMAuthoritative -- Set whether PAM is the authoritive authentication scheme

Synopsis

AuthPAMAuthoritative [ on|off]

Default

off

Context

server config,<VirtualHost>, <Global>

Module

mod_pam

Compatibility

1.2.0pre3 and later

Description

This directive allows you to control whether or not PAM is the ultimate authority on authentication. Setting this directive to on will cause authentication to fail if PAM authentication fails. The default setting, off, allows other modules and directives such as AuthUserFile and friends to authenticate users, should PAM authentication fail. If you are having problems with PAM and using other directives like AuthUserFile, set this directive to off.

See also

Examples

AuthPAMConfig

Name

AuthPAMConfig -- Select PAM service name

Synopsis

AuthPAMConfig [ service]

Default

ftp

Context

server config,<VirtualHost>, <Global>

Module

mod_pam

Compatibility

1.2.0rc1 and later

Description

This directive allows you to specify the PAM service name used in authentication. PAM allows you to specify a service name to use when authenticating. This allows you to configure different PAM service names to be used for different virtual hosts. The directive was renamed from PAMConfig post 1.2.0 pre10.

See also

Examples

# Virtual host foobar authenticates differently than the rest

AuthPAMConfig foobar

# This assumes, that you have a PAM service named foobar
# configured in your /etc/pam.conf file or /etc/pam.d directory. 

AuthUserFile

Name

AuthUserFile -- Specify alternate passwd file

Synopsis

AuthUserFile [ path]

Default

None

Context

server config,<VirtualHost>, <Global>

Module

mod_unixpw

Compatibility

1.0.3/1.1.1 and later

Description

AuthUserFile specifies an alternate passwd file, having the same format as the system /etc/passwd file, and if specified is used during authentication and user lookups for directory/access control operations. The path argument should be the full path to the specified file. AuthUserFile can be configured on a per-VirtualHost basis, so that virtual FTP servers can each have their own authentication database (most often used in conjunction with AuthGroupFile).

Note that this file need not reside inside a chroot()ed directory structure for Anonymous or DefaultRoot logins, as it is held open for the duration of client connections.

Examples

AuthUsingAlias

Name

AuthUsingAlias -- Authenticate via Alias-name instead of mapped username

Synopsis

AuthUsingAlias [ on|off]

Default

AuthUsingAlias off

Context

<Anonymous>

Module

mod_auth

Compatibility

1.2.0pre9 and later

Description

AuthUsingAlias disables the resolving of mapped usernames for authentication purposes. For example, if you have mapped the username anonymous to the "real" user ftp, the password gets checked against the user "anonymous". When AuthUsingAlias is disabled, the checked username would be "ftp".

Examples

An example of an Anonymous configuration using
AuthUsingAlias
# Basic Read-Only Anonymous Configuration.
<Anonymous /home/ftp>
UserAlias             anonymous  nobody
UserAlias             ftp        nobody
AuthAliasOnly         on
<Limit WRITE>
DenyAll
</Limit>
</Anonymous>
# Give Full Read-Write Anonymous Access to certain users
<Anonymous /home/ftp>
AnonRequirePassword   on
AuthAliasOnly         on
AuthUsingAlias        on
# The list of authorized users.
# user/pass lookup is for each user, not password entry
# of server uid ('nobody' in this example).
UserAlias             fred       nobody
UserAlias             joe        nobody
<Limit ALL>
AllowAll
</Limit>
</Anonymous>

Bind

Name

Bind -- Bind the server or Virtualhost to a specific IP address

Synopsis

Bind [ IP address]

Default

None

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

1.1.6 and later

Description

The Bind directive allows additional IP addresses to be bound to a main or VirtualHost configuration. Multiple Bind directives can be used to bind multiple addresses. The address argument should be either a fully qualified domain name or a numeric dotted-quad IP address. Incoming connections destined to an additional address added by Bind are serviced by the context containing the directive. Additionally, if SocketBindTight is set to on, a specific listen connection is created for each additional address.

See also

Examples

ByteRatioErrMsg

Name

ByteRatioErrMsg -- Ratio directive

Synopsis

ByteRatioErrMsg [ foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The ByteRatioErrMsg directive .... Example: ByteRatioErrMsg

See also

Examples

CDPath

Name

CDPath -- Sets "search paths" for the cd command

Synopsis

CDPath [ directory]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

1.2.0pre2 and later

Description

Adds an entry to a search path that is used when changing directories. For example: CDPath /home/public CDPath /var/devel This allows a user to cd into any directory directly under /home/public or /var/devel, provided they have the appropriate rights. So, if /home/public/proftpd exists, cd proftpd will bring the user to that directory, regardless of where they currently are in the directory tree.

See also

Examples

CapabilitiesEngine

Name

CapabilitiesEngine -- Enable/disable mod_cap

Synopsis

CapabilitiesEngine [ on off]

Default

CapabilitiesEngine On, if running on a Linux hosts that supports capabilities

Context

server config, <VirtualHost>, <Global>

Module

mod_cap

Compatibility

1.2.8rc1 and later

Description

The CapabilitiesEngine directive enables or disables the module's runtime capabilities engine. If set to off, this module does no runtime capabilities processing at all. Use this directive to disable the module.

CapabilitiesSet

Name

CapabilitiesSet -- Configure the set of Linux capabilities processed

Synopsis

CapabilitiesSet [ [+/-]capability...]

Default

CapabilitiesSet +CAP_CHOWN

Context

server config, <VirtualHost>, <Global>

Module

mod_cap

Compatibility

1.2.8rc1 and later

Description

By default, mod_cap removes all but two capabilities from the session-handling process: CAP_NET_BIND_SERVICE, for binding to ports lower than 1024 (required for active data transfers), and CAP_CHOWN, for allowing a process to change a file's ownership to a different user. The latter capability is only strictly necessary if the UserOwner configuration directive is in use; if not being used, the CAP_CHOWN capability is best removed. The CapabilitiesSet directive is used to manipulate the set of capabilities that mod_cap grants.

To remove a capability, prefix the name with a '-'; to enable a capability, use '+'. At present, this directive only supports one capability: CAP_CHOWN.

Example

<IfModule mod_cap.c> CapabilitiesEngine on CapabilitiesSet -CAP_CHOWN </IfModule>

Class

Name

Class -- Definition statements for class based tracking

Synopsis

Class [ "name" limit|regex|ip value]

Default

None

Context

server config

Module

mod_core

Compatibility

1.2.0pre9 and later

Description

Controls class based access. Class base access allows each connecting IP to be classified into a separate class. Each class has its own maximum number of connections. limit sets the maximum number of connections (default is 100) for that class name, regex sets a hostname regex (POSIX) for inclusion in the class and ip sets an IP/netmask based inclusion.

See also

Examples

Classes on
Class local limit 100
Class default limit 10
Class local regex .*foo.com
Class local ip 172.16.1.0/24

This creates two classes, local and default, with local being everything in *.foo.com and 172.16.1.* combined.

Classes

Name

Classes -- Enable Class based connection tracking

Synopsis

Classes [ on|off]

Default

Off

Context

server config

Module

mod_core

Compatibility

1.2.0pre9 and later

Description

Controls class based access. Enables class based access control. see: Class

See also

Examples

For examples, see Class

CommandBufferSize

Name

CommandBufferSize -- Limit the maximum command length

Synopsis

CommandBufferSize [ size]

Default

512

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0pre7 and later

Description

The CommandBufferSize directive controls the maximum command length permitted to be sent to the server. This allows you to effectively control what the longest command the server may accept it, and can help protect the server from various Denial of Service or resource-consumption attacks.

See also

Examples

CreateHome

Name

CreateHome -- Create and populate users' home directories as needed

Synopsis

CreateHome [ off|on [<mode>] [skel <path>] [dirmode <mode>]]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

1.2.8rc2 and later

Description

The CreateHome directive configures the server to automatically create a user's home directory, if that directory does not exist, during the login process.

The mode parameter is used to configure the absolute mode of the home directory created. If not specified, the module will default to 700.

The optional skel path parameter can be used to configure an /etc/skel-like directory containing account initialization files and directories. The parameter must be the full path to the directory. The directory must not be world-writeable. Files copied from this directory into the new home directory will have the UID and GID of the logging-in user. Note that sockets and FIFOs in the skeleton directory will not be copied; any setuid or setgid bits on files will be removed from the copied files in the target home directory.

The optional dirmode parameter can be used to specify the mode for intermediate directories that may need to be created in order to create the target home directory. By default, the mode for such intermediate directories will be 711. NOTE: using a mode that does not allow for the execute bit to be enabled can cause havoc. You have been warned.

Examples

# Use the CreateHome default settings CreateHome on

# Specify a skeleton directory CreateHome on skel /etc/ftpd/skel

# No skeleton, but make sure that intermediate directories have 755 # permissions. CreateHome on dirmode 755

# Skeleton directory, with 700 intermediate directories CreateHome on skel /etc/ftpd/skel dirmode 700

CwdRatioMsg

Name

CwdRatioMsg -- Ratio directive

Synopsis

CwdRatioMsg [ foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The CwdRatioMsg directive .... Example: CwdRatioMsg

See also

Examples

DebugLevel

Name

DebugLevel -- Set the debugging output level

Synopsis

DebugLevel [ level]

Default

DebugLevel 0

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.8rc1 and later

Description

The DebugLevel directive configures the debugging level the server will use when logging. The level parameter must be between 0 and 9. This configuration directive will take precedence over any command-line debugging options used.

DefaultAddress

Name

DefaultAddress -- Set the address for the server to listen on

Synopsis

DefaultAddress [ dns-name|ip-address]

Default

none

Context

server config

Module

mod_core

Compatibility

1.2.7rc1 and later

Description

This directive sets the the address the main server instance will bind to, the default behaviour is to select whatever IP the system reports as being the primary IP.

See also

Examples

ServerName "Default FTP Server"
Port 21

# We want the main server instance to listen on a specific IP
DefaultAddress 192.168.10.30

DefaultChdir

Name

DefaultChdir -- Set starting directory for FTP sessions

Synopsis

DefaultChdir [ directory [group-expression]]

Default

~

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

1.2.0pre2 and later

Description

Determines the directory a user is placed in after logging in. By default, the user is put in their home directory. The specified directory can be relative to the user's home directory. NOTE: if the specified directory is not available the user will not be able to log in.

See also

DefaultRoot

Examples

DefaultRoot

Name

DefaultRoot -- Sets default chroot directory

Synopsis

DefaultRoot [ directory [group-expression]]

Default

DefaultRoot /

Context

server config, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

0.99.0pl7 and later

Description

The DefaultRoot directive controls the default root directory assigned to a user upon login. If DefaultRoot is set to a directory other than "/", a chroot operation is performed immediately after a client authenticates. This can be used to effectively isolate the client from a portion of the host system filespace. The specified root directory must begin with a / or can be the magic character '~'; meaning that the client is chroot jailed into their home directory.

When the specified chroot directory is a symlink this will be resolved to it's parent first before setting up the chroot. This can have unwanted side effects. For example if a chroot is to be configured within space to which a user as shell access, the chroot directory could be converted to a symlink pointing at '/'. Thus the chroot would be to the root directory of the server.

If the DefaultRoot directive specifies a directory which disallows access to the logged-in user's home directory, the user's current working directory after login is set to the DefaultRoot instead of their normal home directory. DefaultRoot cannot be used in <Anonymous> configuration blocks, as the <Anonymous> directive explicitly contains a root directory used for Anonymous logins. The special character '~' is replaced with the authenticating user's home directory immediately after login. Note that the default root may be a subdirectory of the home directory, such as "~/anon-ftp".

The optional group-expression argument can be used to restrict the DefaultRoot directive to a unix group, groups or subset of groups. The expression takes the format: [!]group-name1[,[!]group-name2[,...]]. The expression is parsed in a logical boolean AND fashion, such that each member of the expression must evaluate to logically TRUE in order for the DefaultRoot directive to apply. The special character '!' is used to negate group membership.

Care should be taken when using DefaultRoot. Chroot "jails" should not be used as methods for implementing general system security as there are potentially ways that a user can "escape" the jail.

See also

Examples

Example of a DefaultRoot configuration:
ServerName "A test ProFTPD Server"
ServerType inetd
User ftp
Group ftp
#
# This causes proftpd to perform a chroot into the authenticating user's directory 
immediately after login.
# Once this happens, the user is unable to "see" higher level directories.
# Because a group-expression is included, only users who are a member of
# the group 'users' and NOT a member of 'staff' will have their default
# root directory set to '~'.
DefaultRoot ~ users,!staff
... 

DefaultServer

Name

DefaultServer -- Set the default server

Synopsis

DefaultServer [ on|off]

Default

DefaultServer off

Context

server config,<VirtualHost>

Module

mod_core

Compatibility

0.99.0pl6 and later

Description

The DefaultServer directive controls which server configuration is used as the default when an incoming connection is destined for an IP address which is neither the host's primary IP address or one of the addresses specified in a <VirtualHost> configuration block. Normally such "unknown" connections are issued a "no server available to service your request" message and disconnected. When DefaultServer is turned on for either the primary server configuration or a virtual server, all unknown destination connections are serviced by the default server. Only a single server configuration can be set to default.

See also

Examples

DefaultTransferMode

Name

DefaultTransferMode -- Set the default method of data transfer

Synopsis

DefaultTransferMode [ ascii|binary]

Default

DefaultTransferMode ascii

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0pre9 and later

Description

DefaultTransferMode sets the default transfer mode of the server. By default, carriage-return/linefeed translation will be performed (ASCII mode).

See also

Examples

DeferWelcome

Name

DeferWelcome -- Don't show welcome message until user has authenticated

Synopsis

DeferWelcome [ DeferWelcome on|off]

Default

DeferWelcome off

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

0.99.0 and later

Description

The DeferWelcome directive configures a master or virtual server to delay transmitting the ServerName and address to new connections, until a client has successfully authenticated. If enabled, the initial welcome message will be exceedingly generic and will not give away any type of information about the host that the daemon is actively running on. This can be used by security-conscious administrators to limit the amount of "probing" possible from non-trusted networks/hosts.

Examples

Define

Name

Define -- Initialises Defines for IfDefine

Synopsis

Define [ parameter-name]

Default

none

Context

any context

Module

mod_core

Compatibility

1.2.6rc1 and later

Description

This directive is used to initialise defines for use in conjunction with the IfDefine directive

Examples

IfDefine LoadLimiting
IfDefine HighPerformanceSetup

DeleteAbortedStores

Name

DeleteAbortedStores -- Enable automatic deletion of partially uploaded files

Synopsis

DeleteAbortedStores [ DeleteAbortedStores on|off]

Default

off

Context

server, <VirtualHost>, <Directory>, <Anonymous>, <Global>, .ftpaccess

Module

mod_xfer

Compatibility

1.2.0rc2 and later

Description

The DeleteAbortedStores directive controls whether ProFTPD deletes partially uploaded files if the transfer is stopped via the ABOR command rather than a connection failure.

See also

HiddenStor

Examples

Deny

Name

Deny -- Access control directive

Synopsis

Deny [ Deny ["from"] "all"|"none"|host|network[,host|network[,...]]]

Default

None

Context

<Limit>

Module

mod_core

Compatibility

0.99.0pl6 and later

Description

The Deny directive is used to create a list of hosts and/or networks which will explicitly be denied access to a given <Limit> context block. The magic keywords all and none can be used to indicate that all hosts are denied access, or that no hosts are explicitly denied (respectively). For more information on the syntax and usage of Deny see: Allow and Order.

See also

Allow Order Limit

Examples

DenyAll

Name

DenyAll -- Deny all clients

Synopsis

DenyAll [ DenyAll]

Default

None

Context

<Directory>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_core

Compatibility

0.99.0 and later

Description

The DenyAll directive is analogous to a combination of "order deny,allow <cr> deny from all", with the exception that it has a higher precedence when parsed. It is provided as a convenient method of completely denying access to a directory, anonymous ftp or limit block. Because of its precedence, it should not be intermixed with normal Order/Deny directives. The DenyAll directive can be overridden at a lower level directory by using AllowAll. DenyAll and AllowAll are mutually exclusive.

See also

AllowAll

Examples

DenyFilter

Name

DenyFilter -- Regular expression of command arguments to be blocked

Synopsis

DenyFilter [ DenyFilter regular-expression]

Default

None

Context

server config, <VirtualHost>, <Global>, <Anonymous>, <Directory>, .ftpaccess

Module

mod_core

Compatibility

1.2.0pre7 and later

Description

Similar to AllowFilter, DenyFilter specifies a regular expression which must not match any of the command arguments. If the regex does match, a "Forbidden command" error is returned to the client. This can be especially useful for forbidding certain command argument combinations from ever reaching ProFTPD.

Notes: The 'PASV' command cannot be blocked using this directive.

See also

AllowFilter

Examples

# We don't want to allow any commands with % being sent to the server
DenyFilter "%"

DenyGroup

Name

DenyGroup -- Group based deny rules

Synopsis

DenyGroup [ DenyGroup group-expression]

Default

None

Context

<Limit>

Module

mod_core

Compatibility

1.1.1 and later

Description

DenyGroup specifies a group-expression that is specifically denied within the context of the <Limit> block it is applied to. group-expression has the same format as that used in DefaultRoot, in that it should contain a comma separated list of groups or "not" groups (by prefixing a group name with the `!' character) that are to be denied access to the block. The expression is parsed as a boolean "and" list, meaning that ALL elements of the expression must evaluate to logically true in order for the explicit deny to apply.

Examples

DenyUser

Name

DenyUser -- User based deny rules

Synopsis

DenyUser [ DenyUser user-expression]

Default

None

Context

<Limit>

Module

mod_core

Compatibility

1.1.7 and later

Description

DenyUser specifies a user-expression that is specifically denied within the context of the <Limit> block it is applied to. user-expression is a comma delimited list of users or "not" users (by prefixing a user name with the `!' character). The expression is parsed as a boolean "and" list, meaning that all elements of the expression must evaluate to logically true in order for the explicit deny to apply.

Examples

DirFakeGroup

Name

DirFakeGroup -- Hide real file/directory group

Synopsis

DirFakeGroup [ DirFakeGroup On|Off [groupname]]

Default

DirFakeGroup Off

Context

server config, <VirtualHost>, <Global>, <Anonymous>, <Directory>, .ftpaccess

Module

mod_ls

Compatibility

1.1.5

Description

DirFakeGroup can be used to hide the true group of files (including directories, fifos, etc.) in a directory listing. If simply turned On, DirFakeGroup will display all files as being owned by group 'ftp'. Optionally, the groupname argument can be used to specify a specific group other than 'ftp'. "~" can be used as the argument in order to display the primary group name of the current user.

Both DirFakeGroup and DirFakeUser are completely cosmetic; the groupname or username specified don't need to exist on the system, and neither directive affects permissions, real ownership or access control in any way.

Examples

DirFakeMode

Name

DirFakeMode -- Hide real file/directory permissions

Synopsis

DirFakeMode [ DirFakeMode octal-mode]

Default

None

Context

server config, <VirtualHost>, <Global>, <Anonymous>, <Directory>

Module

mod_ls

Compatibility

1.1.6

Description

The DirFakeMode directive configures a mode (or permissions) which will be displayed for ALL files and directories in directory listings. For each subset of permissions (user, group, other), the "execute" permission for directories is added in listings if the "read" permission is specified by this directive. As with DirFakeUser, and DirFakeGroup, the "fake" permissions shown in directory listings are cosmetic only, they do not affect real permissions or access control in any way.

Examples

  DirFakeMode 0640

Will result in:

  -rw-r----- ... arbitrary.file
  drwxr-x--- ... arbitrary.directory

DirFakeUser

Name

DirFakeUser -- Hide real file/directory owner

Synopsis

DirFakeUser [ DirFakeUser On|Off [username]]

Default

DirFakeUser Off

Context

server config, <VirtualHost>, <Global>, <Anonymous>, <Directory>, .ftpaccess

Module

mod_ls

Compatibility

1.1.5

Description

DirFakeUser can be used to hide the true user owners of files (including directories, fifos, etc.) in a directory listing. If simply turned On, DirFakeUser will display all files as being owned by user 'ftp'. Optionally, the username argument can be used to specify a specific user other than 'ftp'. "~" can be used as the argument in order to display the current user's username.

Both DirFakeGroup and DirFakeUser are completely cosmetic; the groupname or username specified don't need to exist on the system, and neither directive affects permissions, real ownership or access control in any way.

Examples

Directory

Name

Directory -- FIXME FIXME

Synopsis

Directory [ <Directory pathname>]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

0.99.0 and later

Description

This directive creates a block of configuration directives which applies only to the specified directory and its sub-directories. The block is ended with </Directory>. Per-directory configuration is enabled during run-time with a "closest" match algorithm, meaning that the <Directory> directive with the closest matching path to the actual pathname of the file or directory in question is used. Per-directory configuration is inherited by all sub-directories until a closer matching <Directory> is encountered, at which time the original per-directory configuration is replaced with the closer match. Note that this does not apply to <Limit> </Limit> blocks, which are inherited by all sub-directories until a <Limit> block is reached in a closer match.

A trailing slash and wildcard ("/*") can be appended to the directory, specifying that the configuration block applies only to the contents (and sub-contents), not to the actual directory itself. Such wildcard matches always take precedence over non-wildcard <Directory> configuration blocks. <Directory> blocks cannot be nested (they are automatically nested at run-time based on their pathnames). Pathnames must always be absolute (except inside <Anonymous>), and should not reference symbolic links. Pathnames inside an <Anonymous> block can be relative, indicating that they are based on the anonymous root directory.

[Notes for ProFTPD 1.1.3 and later only] Pathnames that begin with the special character '~' and do not specify a username immediately after ~ are put into a special deferred mode. When in deferred mode, the directory context is not hashed and sorted into the configuration tree at boot time, but rather this hashing is deferred until a user authenticates, at which time the '~' character is replaced with the user's home directory. This allows a global <Directory> block which applies to all user's home directories, or sub-directories thereof.

See also

Limit

Examples

#Default usage of the directory directive
<Directory /users/robroy/private>
  HideNoAccess
</Directory>

#Example with username-expanding
<Directory ~/anon-ftp>
  <Limit WRITE>
    DenyAll
  </Limit>
</Directory>

DisplayConnect

Name

DisplayConnect -- Sets connect banner file

Synopsis

DisplayConnect [ DisplayConnect filename]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0pre2 and later

Description

The DisplayConnect directive configures an ASCII text filename which will be displayed to the user when they initially connect but before they login. The filename can be either relative or absolute. In the case of a relative filename, the file is searched for starting in the home directory of the user the server is running as. As this can lead confusion, absolute pathnames are suggested. If the file cannot be found or accessed, no error occurs and nothing is logged or displayed to the client.

See also

Examples

DisplayFirstChdir

Name

DisplayFirstChdir -- Set the file to display when first entering a directory

Synopsis

DisplayFirstChdir [ DisplayFirstChdir filename]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>

Module

mod_core

Compatibility

0.99.0 and later, magic cookies only in 0.99.0pl10 and later

Description

The DisplayFirstChdir directive configures an ASCII text filename which will be displayed to the user the first time they change into a directory (via CWD) per a given session. The file will also be displayed if proftpd detects that its last modification time has changed since the previous CWD into a given directory. If the filename is relative, it is looked for in the new directory that the user has changed into. Note that for anonymous ftp logins (see <Anonymous>), the file must reside inside the chroot()ed file system space. If the file cannot be found or accessed, no error occurs and nothing is logged or displayed to the client.

DisplayFirstChdir, DisplayConnect, DisplayLogin and DisplayQuit support the following "magic cookies" (only in 0.99.0pl10 and later), which are replaced with their respective strings before being displayed to the user.

%T	Current Time

%F	Available space on file system

%C	Current working directory

%R	Remote host name

%L	Local host name

%u	Username reported by ident protocol

%U	Username originally used in login

%M	Max number of connections

%N	Current number of connections

%E	Server admin's e-mail address

 
%i      The number of files uploaded (input) in this session

%o      The number of files downloaded (output) in this session

%t      The number of files transfered (uploaded and downloaded) in this session

%x	The name of the user's class

%y	Current number of connections from the user's class

%z	Max number of connections from the user's class

NOTE: not all of these may have a rational value, depending on the context in which they're used (e.g., %u if ident lookups are off).

Examples

DisplayGoAway

Name

DisplayGoAway -- Set the file to display to a rejected connection

Synopsis

DisplayGoAway [ DisplayGoAway filename]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

1.2.0pre8 and later

Description

The DisplayGoAway directive specifies an ASCII text filename which will be displayed to the user if the class they're a member of has too many users logged in and their login request has been denied. DisplayGoAway supports the same "magic cookies" as DisplayFirstChdir.

See also

DisplayFirstChdir

Examples

DisplayLogin

Name

DisplayLogin -- Set the file to display on login

Synopsis

DisplayLogin [ DisplayLogin filename]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

0.99.0 and later

Description

The DisplayLogin directive configures an ASCII text filename which will be displayed to the user when they initially login. The filename can be either relative or absolute. In the case of a relative filename, the file is searched for in the initial directory a user is placed in immediately after login (home directory for unix user logins, anonymous-root directory for anonymous logins). Note: that for jailed logins, the file must reside inside the chroot()ed file system space. If the file cannot be found or accessed, no error occurs and nothing is logged or displayed to the client. DisplayLogin supports the same "magic cookies" as DisplayFirstChdir.

See also

Examples

DisplayQuit

Name

DisplayQuit -- Set the file to display on quit

Synopsis

DisplayQuit [ DisplayQuit filename]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

1.2.0pre8 and later

Description

DisplayQuit configures an ASCII text filename which will be displayed to the user when they quit. The filename can be either relative or absolute. In the case of a relative filename, the file is searched for in current directory a user is in when they logout -- for this reason, a absolute filename is usually preferable. NOTE: for jailed logins, the file must reside inside the chroot()ed file system space. If the file cannot be found or accessed, no error occurs and nothing is logged or displayed to the client. DisplayQuit supports the "magic cookies" listed under DisplayFirstChdir.

See also

Examples

DisplayReadme

Name

DisplayReadme -- Enable display of file modification times on a file pattern

Synopsis

DisplayReadme [ DisplayReadme filename or pattern]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_readme

Compatibility

1.2.0pre8 and later

Description

Module: mod_readme The DisplayReadme directive notifies the user of the last change date of the specified file or pattern. Only a single DisplayReadme directive is allowed per configuration scope. DisplayReadme README Will result in: Please read the file README it was last modified on Sun Oct 17 10:36:14 1999 - 0 days ago Being displayed to the user on a cwd. DisplayReadmePattern README* Will result in: Please read the file README it was last modified on Tue Jan 25 04:47:48 2000 - 0 days ago Please read the file README.first it was last modified on Tue Jan 25 04:48:04 2000 - 0 days ago Being displayed to the user on a cwd.

See also

Examples

ExtendedLog

Name

ExtendedLog -- FIXME FIXME

Synopsis

ExtendedLog [ filename [[command-classes] format-nickname]]

Default

None

Context

server config, <VirtualHost>, <Anonymous> <Global>

Module

mod_log

Compatibility

1.1.6pl1 and later

Description

The ExtendedLog directive allows customizable logfiles to be generated, either globally or per VirtualHost. The filename argument must contain an absolute pathname to a logfile which will be appended to when proftpd starts; the pathname should not be to a file in a nonexistent directory, to a world-writeable directory, or be a symbolic link (unless AllowLogSymlinks is set to on). Multiple logfiles (potentially with different command classes and formats) can be created. Optionally, the command-classes argument can be used to control which types of commands are logged. If not command classes are specified, proftpd logs all commands by default (passwords are hidden). command-classes is a comma delimited (no whitespace!) list of which commands to log.

The following are valid classes: NONE No commands AUTH Authentication commands (USER, PASS) INFO Informational commands (PWD, SYST, etc) DIRS Directory commands (LIST, CWD, MKD, etc) READ File reading (RETR) WRITE File/directory writing or creation MISC Miscellaneous commands (SITE, etc) ALL All commands (default)

If a format-nickname argument is supplied, ExtendedLog will use the predefined logformat (created by LogFormat). Otherwise, the default format of "%h %l %u %t \"%r\" %s %b" is used.

Examples

For example, to log all read and write operations to /var/log/ftp.log (using the default format), you could:

ExtendedLog /var/log/ftp.log read,write

FileRatioErrMsg

Name

FileRatioErrMsg -- FIXME FIXME

Synopsis

FileRatioErrMsg [ FileRatioErrMsg foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The FileRatioErrMsg directive .... Example: FileRatioErrMsg

See also

Examples

FooBarDirective

Name

FooBarDirective -- Dummy directive

Synopsis

FooBarDirective [ FooBarDirective thingy]

Default

none

Context

server config, <Anonymous>, <Limit>

Module

mod_sample

Compatibility

at least 1.2.0 and later

Description

FooBarDirective is a dummy directive to be used as a coding example only.

See also

Examples

Global

Name

Global -- Set some directives to apply across the entire daemon

Synopsis

Global [ <Global>]

Default

None

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

1.1.6 and later

Description

The Global configuration block is used to create a set of configuration directives which is applied universally to both the main server configuration and all VirtualHost configurations. Most, but not all other directives can be used inside a Global block.

In addition, multiple <Global> blocks can be created. At runtime, all Global blocks are merged together and finally into each server's configuration. Global blocks are terminated by a matching </Global> directive.

See also

Examples

Group

Name

Group -- Set the group the server normally runs as

Synopsis

Group [ Group groupid]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

0.99.0 and later

Description

The Group directive configures which group the server daemon will normally run at. See User for more details.

See also

Examples

GroupOwner

Name

GroupOwner -- FIXME FIXME

Synopsis

GroupOwner [ GroupOwner groupname]

Default

None

Context

<Anonymous>, <Directory>, .ftpaccess

Module

mod_core

Compatibility

0.99.0 and later

Description

The GroupOwner directive configures which group all newly created directories and files will be owned by, within the context that GroupOwner is applied to. The group ID of groupname cannot be 0. Note that GroupOwner cannot be used to override the host OS/file system user/group paradigm. If the current user is not a member of the specified group, new files and directories will not be able to be chown()ed to the GroupOwner group. If this happens, file STOR (send file from client to server) and MKD/XMKD (mkdir) operations will succeed normally, however the new directory entries will be owned by the current user's default group (a warning message is also logged) instead of by the desired group. If you also use UserOwner in the same context, this restriction is lifted.

See also

Examples

GroupPassword

Name

GroupPassword -- FIXME FIXME

Synopsis

GroupPassword [ GroupPassword groupid hashed-password]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

0.99.0pl5 and later

Description

The GroupPassword directive creates a special "group" password which allows all users in the specified group to authenticate using a single password. The group/password supplied is only effective inside the context to which GroupPassword is applied. The hashed-password argument is a standard cleartext password which has been passed through the standard unix crypt() library function. Extreme care should be taken when using GroupPassword, as serious security problems may arise if group membership is not carefully controlled.

See also

UserPassword

Examples

GroupRatio

Name

GroupRatio -- Ratio directive

Synopsis

GroupRatio [ GroupRatio foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The GroupRatio directive .... Example: GroupRatio

See also

Examples

HiddenStor

Name

HiddenStor -- Enables more safe file uploads

Synopsis

HiddenStor [ HiddenStor on|off]

Default

HiddenStor off

Context

<Directory>, <Anonymous>, <VirtualHost>, <Global>

Module

mod_xfer

Compatibility

1.2.0pre5 and later

Description

The HiddenStor directive enables two-step file uploads: files are uploaded as ".in.filename." and once the upload is complete, renamed to just "filename". This provides a degree of atomicity and helps prevent 1) incomplete uploads and 2) files being used while they're still in the progress of being uploaded. Note: if the temporary file name is already in use (e.g., a server crash during upload), it will prevent the file from being uploaded.

The REST (Restart STOR) command is automatically blocked when HiddenStor is enabled, with the server returning a 501 error code to the client.

Examples

HiddenStores

Name

HiddenStores -- FIXFIXFIX

Synopsis

HiddenStores [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_xfer

Compatibility

1.2.7rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

HideFiles

Name

HideFiles -- Enable hiding of files based on regular expressions

Synopsis

HideFiles [ [!]regexp|"none" ["user"|"group"|"class" expression]]

Default

None

Context

<Directory>, .ftpaccess

Module

mod_core

Compatibility

1.2.7rc1 and later

Description

The HideFiles directive configures a <Directory> section to hide all directory entries, e.g. its files and sub-directories, that match the given regular expression. These files can still be operated on by other FTP commands (DELE, RETR, etc), as constrained by any applicable <Limit>s, but this can be modified using the IgnoreHidden directive. Note that this directive manipulates a file's "hidden-ness", but doesn't do any hiding by itself. A <Limit> section, with IgnoreHidden enabled, does the actual hiding of the files from the <Limit>ed commands.

As <Directory> configurations are inherited by sub-directories, the "none" parameter can be used to disable any inherited file hiding within a sub-directory, usually through the use of a .ftpaccess file.

The optional parameters are used to restrict the rule for hiding files only to specific users. If "user" restriction is given, then expression is a user-expression specifying to which users the rule applies. Similarly for the "group" restriction. For the "class" restriction, the expression is simply the name of connection class for whom the rule will apply.

An unrestricted HideFiles directive and an unrestriected ShowFiles directive cannot be used simultaneously in the context.

Example: # Hide configuration and passwd files from view HideFiles "(\\.conf|passwd)$" # ...or the same regex, without the quotes HideFiles (\.conf|passwd)$ # Hide those same files from everyone _except_ a special user HideFiles (\.conf|passwd)$ user !tj # Using the ! prefix to "invert" the regular expression matching, # allow only .txt and .html files to be seen HideFiles !(\.txt|\.html)$ # Only let users of the webmaster group see HTML files, but nothing else HideFiles !(\.htm|\.html)$ group webmaster

See Also: HideGroup, HideUser, HideNoAccess

HideGroup

Name

HideGroup -- Enable hiding of files based on group owner

Synopsis

HideGroup [ HideGroup groupid]

Default

None

Context

<Directory>, <Anonymous>

Module

mod_core

Compatibility

0.99.0 and later

Description

The HideGroup directive configures a <Directory> or < Anonymous> block to hide all directory entries owned by the specified group, unless the group is the primary group of the currently logged-in, authenticated user . Normally, hidden directories and files cannot be seen via LIST or NLST commands but can be operated on via other FTP commands (CWD, DELE, RETR, etc). This behavior can be modified via the IgnoreHidden directive.

See also

See Also: HideUser, HideNoAccess, IgnoreHidden

Examples

HideNoAccess

Name

HideNoAccess -- Block the listing of directory entries to which the user has no access permissions

Synopsis

HideNoAccess [ HideNoAccess on|off]

Default

None

Context

<Directory>,<Anonymous>

Module

mod_core

Compatibility

0.99.0 and later

Description

The HideNoAccess directive configures a <Directory> or <Anonymous> block to hide all directory entries in a directory listing (via the LIST or NLST FTP commands) to which the current logged-in, authenticated user has no access. Normal Unix-style permissions always apply, so that although a user may not be able to see a directory entry that has HideNoAccess applied, they will receive a normal "Permission denied" error message when attempting to blindly manipulate the file system object. The directory or file can be made completely invisible to all FTP commands by applying IgnoreHidden in conjunction with HideNoAccess.

See also

See Also: HideUser, HideGroup, IgnoreHidden

Examples

HideUser

Name

HideUser -- FIXME FIXME

Synopsis

HideUser [ HideUser userid]

Default

None

Context

<Directory>, <Anonymous>

Module

mod_core

Compatibility

0.99.0 and later

Description

The HideUser directive configures a <Directory> or <Anonymous> block to hide all directory entries owned by the specified user, unless the owning user is the currently logged-in, authenticated user. Normally, hidden directories and files cannot be seen via LIST or NLST commands but can be operated on via other FTP commands (CWD, DELE, RETR, etc). This behavior can be modified via the IgnoreHidden directive.

See also

HideGroup, HideNoAccess, IgnoreHidden

Examples

HostRatio

Name

HostRatio -- Ratio directive

Synopsis

HostRatio [ HostRatio foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The HostRatio directive .... Example: HostRatio

See also

Examples

IdentLookups

Name

IdentLookups -- Toggle ident lookups

Synopsis

IdentLookups [ IdentLookups on|off]

Default

IdentLookups on

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.1.5 and later

Description

Normally, when a client initially connects to proftpd, the ident protocol (RFC1413) is used to attempt to identify the remote username. This can be controlled via the IdentLookups directive.

See also

Examples

IfDefine

Name

IfDefine -- To control the use of sections of the configuration

Synopsis

IfDefine [ [!]define-label]

Default

none

Context

any

Module

mod_core

Compatibility

1.2.6rc1 and later

Description

The <IfDefine test>...</IfDefine> section is used to mark directives that are conditional. The directives within an IfDefine section are only processed if the test is true. If the test is false, everything between the start and end markers is ignored.

The test in the <IfDefine> section directive can be one of two forms: 'parameter-name' or '!parameter-name'

In the former case, the directives between the start and end markers are only processed if the parameter named parameter-name is defined. The second format reverses the test, and only processes the directives if parameter-name is not defined.

The parameter-name argument is a define as given on the command line via -Dparameter-name, at the time the server was started.

<IfDefine> sections are nest-able, which can be used to implement simple multiple-parameter tests.

See also

Define, IfModule

Examples

$ proftpd -DDoSomething

--[ proftpd.conf ]--
<IfDefine DoSomething>
# do something here
</IfDefine>
--[ end ]--

IfModule

Name

IfModule -- Parse a section of config based on module name

Synopsis

IfModule [ [!]module-name]

Default

none

Context

any

Module

mod_core

Compatibility

1.2.6rc1 and later

Description

The <IfModule test>...</IfModule> section is used to mark directives that are conditional. The directives within an IfModule section are only processed if the test is true. If the test is false, everything between the start and end markers is ignored.

The test in the <IfModule> section directive can be one of two forms: "module name" or "!module name"

In the former case, the directives between the start and end markers are only processed if the module named module name is compiled in to ProFTPD. The second format reverses the test, and only processes the directives if module name is not compiled in.

The module name argument is a module name as given as the file name of the module, at the time it was compiled. For example, mod_sql.c.

<IfModule> sections are nest-able, which can be used to implement simple multiple-module tests.

See also

Define, IfDefine

Examples

<IfModule mod_load.c>
MaxLoad                 10 "Access denied, server load too high"
</IfModule>

FIXFIX

IgnoreHidden

Name

IgnoreHidden -- Treat 'hidden' files as if they don't exist

Synopsis

IgnoreHidden [ IgnoreHidden on|off]

Default

IgnoreHidden off

Context

<Limit>

Module

mod_core

Compatibility

0.99.0 and later

Description

Normally, files hidden via HideNoAccess, HideUser or HideGroup can be operated on by all FTP commands (assuming Unix file permissions allow access), even though they do not appear in directory listings. Additionally, even when normal file system permissions disallow access, proftpd returns a "Permission denied" error to the client, indicating that the requested object does exist, even if it cannot be acted upon. IgnoreHidden configures a <Limit> block to completely ignore any hidden directory entries for the set of limited FTP commands. This has the effect of returning an error similar to "No such file or directory" when the client attempts to use the limited command upon a hidden directory or file.

See also

Examples

Include

Name

Include -- Load additional configuration directives from a file

Synopsis

Include [ Include file]

Default

None

Context

server config, <Directory>, <Anonymous>, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0 and later

Description

This directive allows you to include another configuration file within your current configuration file. The given file argument must be the full path to the file to be included.

See also

Examples

LDAPAuthBinds

Name

LDAPAuthBinds -- FIXME FIXME

Synopsis

Syntax: LDAPAuthBinds [ on off ]

FIX FIX FIX

Default

LDAPAuthBinds off in mod_ldap <= 2.7.6, LDAPAuthBinds on in mod_ldap >= 2.8

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.5 and later

Description

By default, the DN specified by LDAPDNInfo will be used to bind to the LDAP server to obtain user information, including the userPassword attribute. If LDAPAuthBinds is set to on, the DN specified by LDAPDNInfo will be used to fetch all user information except the userPassword attribute. Then, mod_ldap will bind to the LDAP server as the user who is logging in via FTP with the user-supplied password. If this bind succeeds, the user is considered authenticated and is allowed to log in. This method of LDAP authentication has the added benefit of supporting any password encryption scheme that your LDAP server supports.

See also

Examples

LDAPDNInfo

Name

LDAPDNInfo -- Set DN information to be used for initial bind

Synopsis

LDAPDNInfo [ LDAPDNInfo "ldap-dn" "dn-password" ]

Default

LDAPDNInfo "" "" (anonymous bind)

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

This directive specifies the LDAP DN and password to use when binding to the LDAP server. If this configuration directive is not specified, anonymous binds are used.

See also

Examples

LDAPDefaultAuthScheme

Name

LDAPDefaultAuthScheme --  Set the authentication scheme/hash that is used when no leading {hashname} is present.

Synopsis

LDAPDefaultAuthScheme [ crypt clear ]

Default

LDAPDefaultAuthScheme "crypt"

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

Specifies the authentication scheme used for passwords with no {prefix} in the LDAP database. For example, if you are using something like userPassword: mypass in your LDAP database, you would want to set LDAPDefaultAuthScheme to clear.

See also

Examples

LDAPDefaultGID

Name

LDAPDefaultGID --  Set the default GID to be assigned to users when no uidNumber attribute is found.

Synopsis

LDAPDefaultGID [ default-gid ]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

This directive is useful primarily in virtual-user environments common in large-scale ISPs and hosting organizations. If a user does not have a LDAP gidNumber attribute, the LDAPDefaultGID is used. This allows one to have a large number of users in an LDAP database without gidNumber attributes; setting this configuration directive will automatically assign those users a single GID.

See also

Examples

LDAPDefaultUID

Name

LDAPDefaultUID --  Set the default GID to be assigned to users when no uidNumber attribute is found.

Synopsis

LDAPDefaultUID [ default-uid ]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

This directive is useful primarily in virtual-user environments common in large-scale ISPs and hosting organizations. If a user does not have a LDAP uidNumber attribute, the LDAPDefaultUID is used. This allows one to have a large number of users in an LDAP database without uidNumber attributes; setting this configuration directive will automatically assign those users a single UID.

See also

Examples

LDAPDoAuth

Name

LDAPDoAuth -- Enable LDAP authentication

Synopsis

LDAPDoAuth [ on off ] [ "auth-base-prefix" ] [ "search-filter-template" ]

Default

LDAPDoAuth off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

This configuration directive activates LDAP authentication. The second argument to this directive is the LDAP prefix to use for authentication. The third argument is a template to be used for the search filter; %v will be replaced with the username that is being authenticated. By default, the search filter template "(&(uid=%v)(objectclass=posixAccount))" is used. Search filter templates are only supported in mod_ldap v2.7 and later.

See also

Examples

LDAPDoGIDLookups

Name

LDAPDoGIDLookups --  Enable LDAP lookups for user group membership and GIDs in directory listings

Synopsis

LDAPDoGIDLookups [ on off ] [ "uid-base-prefix" ] [ "search-filter-template" ]

Default

LDAPDoGIDLookups off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

This configuration directive activates LDAP GID-to-name lookups in directory listings. The second argument to this directive is the LDAP prefix to use for GID-to-name lookups. The third argument is a template to be used for the search filter; %v will be replaced with the GID that is being looked up. By default, the search filter template "(&(gidNumber=%v)(objectclass=posixGroup))" is used. Search filter templates are only supported in mod_ldap v2.7 and later.

See also

Examples

LDAPDoUIDLookups

Name

LDAPDoUIDLookups --  Enable LDAP lookups for UIDs in directory listings

Synopsis

LDAPDoUIDLookups [ on off ] [ "uid-base-prefix" ] [ "search-filter-template" ]

Default

LDAPDoUIDLookups off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

This configuration directive activates LDAP UID-to-name lookups in directory listings. The second argument to this directive is the LDAP prefix to use for UID-to-name lookups. The third argument is a template to be used for the search filter; %v will be replaced with the UID that is being looked up. By default, the search filter template "(&(uidNumber=%v)(objectclass=posixAccount))" is used. Search filter templates are only supported in mod_ldap v2.7 and later.

See also

Examples

LDAPForceDefaultGID

Name

LDAPForceDefaultGID -- Force all LDAP-authenticated users to use the same GID.

Synopsis

Syntax: LDAPForceDefaultGID [ on off ]

Default

LDAPForceDefaultGID off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.8 and later

Description

Even when a LDAPDefaultGID is configured, mod_ldap will allow individual users to have gidNumber attributes that will override this default GID. With LDAPForceDefaultGID enabled, all LDAP-authenticated users are given the default GID; GIDs may not be overridden by gidNumber attributes.

See also

Examples

LDAPForceDefaultUID

Name

LDAPForceDefaultUID -- Force all LDAP-authenticated users to use the same UID.

Synopsis

Syntax: LDAPForceDefaultUID [ on off ]

Default

LDAPForceDefaultUID off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.8 and later

Description

Even when a LDAPDefaultUID is configured, mod_ldap will allow individual users to have uidNumber attributes that will override this default UID. With LDAPForceDefaultUID enabled, all LDAP-authenticated users are given the default UID; UIDs may not be overridden by uidNumber attributes.

See also

Examples

LDAPForceHomedirOnDemand

Name

LDAPForceHomedirOnDemand --  Force all LDAP-authenticated users to use the default HomeDironDemand prefix/suffix.

Synopsis

LDAPForceHomedirOnDemand [ on off ] [ directory-mode ]

Default

LDAPForceHomedirOnDemand off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.8.11 and later

Description

Even when a LDAPHomeDironDemandPrefix is configured, mod_ldap will allow individual users to have homeDirectory attributes that will override the default. With LDAPForceHomeDironDemand enabled, all LDAP-authenticated users are given the default prefix and/or suffix; homedirs may not be overridden by LDAP homeDirectory attributes.

See also

Examples

LDAPHomedirOnDemand

Name

LDAPHomedirOnDemand --  Enable the creation of user home directories on demand

Synopsis

LDAPHomedirOnDemand [ on off ] [ directory-mode ]

Default

LDAPHomedirOnDemand off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

LDAPHomedirOnDemand activates on-demand home directory creation. If a user logs in and does not yet have a home directory, a home directory is created automatically.

In mod_ldap <= 2.7.6, the home directory will be owned by the same user and group that ProFTPD runs as (see the User and Group configuration directives). mod_ldap >= 2.8 can create home directories for users with any UID/GID, not just those with the same UID/GID as the main ProFTPD server.

The second argument allows you to specify the mode (default permissions) to use when creating home directories on demand, subject to ProFTPD's umask (see the Umask directive). If no directory mode is specified, the default of 0755 is used. Directory mode setting is only supported in mod_ldap v2.7 or later.

See also

Examples

LDAPHomedirOnDemandPrefix

Name

LDAPHomedirOnDemandPrefix --  Enable the creation of user home directories on demand

Synopsis

LDAPHomedirOnDemandPrefix [ leading-path ]

Default

LDAPHomedirOnDemandPrefix off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.8 and later

Description

LDAPHomedirOnDemandPrefix enables a prefix to be specified for on-demand home directory creation. This is most useful if mod_ldap is being used to authenticate against an LDAP directory that does not return a homeDirectory attribute, either because it cannot (Microsoft Active Directory, for example) or because you do not wish to extend your existing directory schema.

For example, setting this directive to "/home" and logging in as the user "joe" would result in his home directory being created as "/home/joe". The directory will be created with the mode specified in LDAPHomedirOnDemand. To use this directive, LDAPHomedirOnDemand must be enabled.

See also

Examples

LDAPHomedirOnDemandPrefixNoUsername

Name

LDAPHomedirOnDemandPrefixNoUsername -- FIXFIXFIX

Synopsis

LDAPHomedirOnDemandPrefixNoUsername [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_ldap

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

LDAPHomedirOnDemandSuffix

Name

LDAPHomedirOnDemandSuffix --  Specify an additional directory to be created inside a user's home directory on demand.

Synopsis

LDAPHomedirOnDemandSuffix [ additional-directory1 additional-directory2 additional-directory3 ]

Default

LDAPHomedirOnDemandSuffix ""

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.6 and later.

Description

to be created within a user's home directory when it is created on demand. For example, if a user's home directory is "/home/user", setting this configuration directive to "public_html" will also create "/home/user/public_html" on demand. In mod_ldap v2.7.6 and earlier, you must also activate LDAPHomedirOnDemand in your configuration.

mod_ldap >= 2.8 supports multiple suffix arguments and does not require LDAPHomedirOnDemand to be enabled.

See also

Examples

LDAPNegativeCache

Name

LDAPNegativeCache -- Enable negative caching for LDAP lookups

Synopsis

LDAPNegativeCache [ on off ]

Default

LDAPNegativeCache off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v1.1 and later

Description

LDAPNegativeCache specifies whether or not to cache negative responses from the LDAP server when using LDAP for UID/GID lookups. This option is useful if you also use/are in transition from another authentication system; if there are many users in your old authentication system that aren't in the LDAP database, there can be a significant delay when a directory listing is performed as the UIDs not in the LDAP database are repeatedly looked up in an attempt to present usernames instead of UIDs in directory listings. With LDAPNegativeCache set to on, negative ("not found") responses from the LDAP server will be cached and speed will improve on directory listings that contain many users not present in the LDAP database.

See also

Examples

LDAPQueryTimeout

Name

LDAPQueryTimeout -- Set a timeout for LDAP queries

Synopsis

LDAPQueryTimeout [ timeout-seconds ]

Default

LDAPQueryTimeout default-api-timeout

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.0 and later

Description

Sets the timeout used for LDAP directory queries. The default is the default timeout used by your LDAP API.

See also

Examples

LDAPSearchScope

Name

LDAPSearchScope -- Specify the search scope used in LDAP queries

Synopsis

LDAPSearchScope [ onelevel subtree ]

Default

LDAPSearchScope subtree

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.6 and later

Description

Set the scope used for LDAP searches. The default setting, subtree, searches for all entries in the tree from the current level down. Setting this directive to onelevel searches only one level deep in the LDAP tree.

See also

Examples

LDAPServer

Name

LDAPServer -- Specify the LDAP server to use for lookups

Synopsis

LDAPServer [ "hostname1:port1 hostname2:port2" ]

Default

LDAPServer "localhost"

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v1.0 and later

Description

LDAPServer allows you to to specify the hostname(s) and port(s) of the LDAP server(s) to use for LDAP authentication. If no LDAPServer configuration directive is present, the default LDAP servers specified by your LDAP API will be used.

See also

Examples

LDAPUseTLS

Name

LDAPUseTLS -- Enable TLS/SSL connections to the LDAP server.

Synopsis

Syntax: LDAPUseTLS [ on off ]

Default

LDAPUseTLS off

Context

server config, <VirtualHost>, <Global>

Module

mod_ldap

Compatibility

mod_ldap v2.8 and later

Description

By default, mod_ldap connects to the LDAP server via a non-encrypted connection. Enabling this option causes mod_ldap to use an encrypted (TLS/SSL) connection to the LDAP server. If a secure connection to the LDAP server fails, mod_ldap will not authenticate users (mod_ldap will *not* fall back to an unsecure connection).

See also

Examples

LeechRatioMsg

Name

LeechRatioMsg -- Sets the 'over ratio' error message

Synopsis

LeechRatioMsg [ LeechRatioMsg foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The LeechRatioMsg directive defines the response message sent back to the client upon breaking their quota limits.

See also

Examples

LeechRatioMsg "please upload as well as download"

Limit

Name

Limit -- Set the commands/actions to be controlled

Synopsis

Limit [ <Limit command|command-group [command2 ..]>]

Default

None

Context

server config, <VirtualHost>, <Directory>, <Anonymous>, <Global>, .ftpaccess

Module

mod_core

Compatibility

0.99.0 and later

Description

The Limit configuration block is used to place access restrictions on one or more FTP commands, within a given context. Limits flow downward, so that a Limit configuration in the server config context applies to all <Directory> and <Anonymous> blocks that also reside in the configuration; until it is overridden by a "lower" <Limit> block. Any number of command parameters can be specified, against which the contents of the <Limit> block will be applied. command can be any valid FTP command, but is generally one of the following: CWD (Change Working Directory) Sent by client when changing directories. MKD / XMKD (MaKe Directory) Sent by client to create a new directory. RNFR (ReName FRom), RNTO (ReName TO) Sent as a pair by client to rename a directory entry. DELE (DELEte) Sent by client to delete a file. RMD / XRMD (ReMove Directory) Sent by client to remove a directory. RETR (RETRieve) Transfer a file from the server to the client. STOR (STORe) Transfer a file from the client to the server. In addition, the following command-groups are accepted. They have a lower precedence than real commands, meaning that a real command limit will always be applied instead of the command-group. READ All FTP commands which deal with file reading (directory listing not included): RETR, SITE, SIZE, STAT WRITE All FTP commands which deal with file or directory write/creation/deletion: APPE, DELE, MKD, RMD, RNTO, STOR, XMKD, XRMD DIRS All FTP commands which deal with directory listing: CDUP, CWD, LIST, MDTM, NLST, PWD, RNFR, XCUP, XCWD, XPWD ALL ALL FTP commands (identical to READ WRITE DIRS). Note this group has the lowest precedence of all; it will not override a limit imposed by another command-group (e.g. DIRS). Finally, a special command is allowed which can be used to control login access: LOGIN Connection or login to the server. Applying a <Limit> to this pseudo-command can be used to allow or deny initial connection or login to the context. It has no effect, and is ignored, when used in a context other than server config, <VirtualHost> or <Anonymous> (i.e. using it in a <Directory> context is meaningless). <Limit> command restrictions should not be confused with file/directory access permission. While limits can be used to restrict a command on a certain directory, they cannot be used to override the file permissions inherent to the base operating/file system. The following FTP commands cannot be restricted via <Limit>: ABOR HELP MODE (not implemented, always S) NOOP PASS (use <Limit LOGIN>) PASV PORT QUIT REST (use AllowRetrieveRestart, AllowStoreRestart) STRU (not implemented, always F) SYST TYPE USER (use <Limit LOGIN>)

See also

See Also: IgnoreHidden

Examples

ListOptions

Name

ListOptions -- Configure options used when listing directories

Synopsis

ListOptions [ "options string"] [ ["strict"]]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>, <Directory>, .ftpaccess

Module

mod_ls

Compatibility

1.2.8rc1 and later

Description

Normally, FTP commands involving directory listings (NLST, LIST and STAT) use the arguments (options) passed by the client to determine what files are displayed and the format they are displayed in. The ListOptions directive can alter the behaviour of such listings by making it such that a certain option (or options) is always in effect, or is always disabled.

In addition to the normal dash-prefixed options that the builtin ls takes, the directive allows for plus-prefixed options. The plus-prefixed options allow for their dash-prefixed equivalents, potentially given by a user, to be disabled, while still allowing other options to function normally.

In the optional "strict" keyword is used, then the configured options will override any options given by the user (i.e. the user's options will be ignored).

See also

Examples

# Force directory listings to always show dotfiles ListOptions "-a"

# To prevent anyone from doing recursive listings, but still allowing # other user options, use +R to disable any -R option given by users ListOptions "+R"

# To allow only the basic listing, no options, always ListOptions "" strict

LogFormat

Name

LogFormat -- Specify a logging format

Synopsis

LogFormat [ LogFormat nickname "format-string"]

Default

LogFormat default "%h %l %u %t \"%r\" %s %b"

Context

server config

Module

mod_log

Compatibility

1.1.6pl1 and later

Description

The LogFormat directive can be used to create a custom logging format for use with the ExtendedLog directive. Once created, the format can be referenced by the specified nickname. The format-string argument can consist of any combination of letters, numbers and symbols. The special character % is used to start a meta-sequence (see below). To insert a literal % character, use %%.

The following meta sequences are available and are replaced as indicated when logging. %a   Remote client IP address %A   Anonymous username (password given), or UNKNOWN if non-anonymous %b   Bytes sent for request %d Directory name (not full path) for CDUP, CWD, MKD, RMD, XCWD, XCUP, XMKD, XRMD   %D Directory name (full path) for CDUP, CWD, MKD, RMD, XCWD, XCUP, XMKD, XRMD   %{FOOBAR}e   Contents of environment variable FOOBAR. Note that the server does not set any environment variables itself. %f   Filename stored or retrieved, absolute path (not chrooted) %F   Filename stored or retrieved, as the client sees it %h   Remote client DNS name %l   Remote username (from ident), or UNKNOWN if ident lookup failed %L   Local server IP address %m   Command (method) name received from client, e.g., RETR %p   Local server port number %P   Local server process id (pid) %r   Full command line received from client %s   Numeric FTP response code (status) %t   Current local time %{format}t   Current local time formatted (strftime(3) format) %T   Time taken to transmit/receive file, in seconds %u   Local authenticated userid %U   USER name originally sent by the client %v   ServerName of server handling session %V   DNS name of server handling session

Examples

LoginPasswordPrompt

Name

LoginPasswordPrompt -- FIXME FIXME

Synopsis

LoginPasswordPrompt [ LoginPasswordPrompt on|off]

Default

LoginPasswordPrompt on

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

1.2.0pre1 and later

Description

If set to off, ProFTPd will skip the password request if the login will be denied regardless of password, e.g., if a <Limit LOGIN> directive forbids the connection.

See also

Examples

LsDefaultOptions

Name

LsDefaultOptions -- FIXME FIXME

Synopsis

LsDefaultOptions [ LsDefaultOptions "options string"]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_ls

Compatibility

1.1.6 and later

Description

Normally, FTP commands involving directory listings (NLST, LIST and STAT) use the arguments (options) passed by the client to determine what files are displayed and the format they are displayed in. Using the LsDefaultOptions directive can alter the default behavior of such listings, but implying that a certain option (or options) is always present. For example, to force all directory listings to always display ".dotfiles", one might: LsDefaultOptions "-a"

See also

Examples

MasqueradeAddress

Name

MasqueradeAddress -- Configure the server address presented to clients

Synopsis

MasqueradeAddress [ MasqueradeAddress ip-address|dns-hostname]

Default

none

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

1.2.2 and later

Description

MasqueradeAddress causes the server to display the network information for the specified IP address or DNS hostname to the client, on the assumption that that IP address or DNS host is acting as a NAT gateway or port forwarder for the server.

See also

Examples

    MasqueradeAddress nat-gw.mydomain.com

MaxClients

Name

MaxClients -- Limits the number of users that can connect

Synopsis

MaxClients [ MaxClients number|none [message]]

Default

MaxClients none

Context

server config, <Anonymous>, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

0.99.0 and later

Description

The MaxClients directive configures the maximum number of authenticated clients which may be logged into a server or anonymous account. Once this limit is reached, additional clients attempting to authenticate will be disconnected. The special value none may be supplied which removes all maximum connection limits from the applicable configuration context. Additionally, an optional message argument may be used which will be displayed to a client attempting to exceed the maximum value; immediately before disconnection. The message argument is parsed for the magic string "%m", which is replaced with the configured maximum value. If message is not supplied, a system-wide default message is used. Example: MaxClients 5 "Sorry, the maximum number of allowed users are already connected (%m)" Results in: 530 Sorry, the maximum number of allowed users are already connected (5)

See also

Examples

MaxClientsPerHost

Name

MaxClientsPerHost -- Limits the connections per client machine

Synopsis

MaxClientsPerHost [ MaxClientsPerHost number|none [message]]

Default

MaxClientsPerHost none

Context

server config, <Anonymous>, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

1.1.7 and later

Description

The MaxClientsPerHost directive configures the maximum number of clients allowed to connect per host. The optional argument message may be used which will be displayed to a client attempting to exceed the maximum value. If message is not supplied, a default message of "Sorry, the maximum number clients (%m) from your host are already connected." is used.

See also

MaxClients, MaxHostsPerUser

Examples

MaxClientsPerHost 1 "Sorry, you may not connect more than one time."
Results in: 530 Sorry, you may not connect more than one time.

MaxClientsPerUser

Name

MaxClientsPerUser -- Limit the number of connections per userid

Synopsis

MaxClientsPerUser [ MaxClientsPerUser number|none [message]]

Default

MaxClientsPerUser none

Context

server config, <VirtualHost>, <Global>, <Anonymous>

Module

mod_auth

Compatibility

1.2.7rc1 and later

Description

The MaxClientsPerUser directive configures the maximum number of clients that may be connected at any given time using the same user name. The optional argument message may be used which will be displayed to a client attempting to exceed the maximum value. If message is not supplied, a default message of "Sorry, the maximum number of clients (%m) for this user already connected."

Examples

MaxClientsPerUser 1 "Only one such user at a time."
Results in: 530 Only one such user at a time.

MaxConnectionRate

Name

MaxConnectionRate -- Maximum TCP socket connection rate

Synopsis

MaxConnectionRate [ connections per second]

Default

none

Context

server config

Module

mod_core

Compatibility

1.2.7rc1 and later

Description

Set the maxiumum rate at which new TCP connections are accepted, this applies to the entire server, therefore too low a value on a high traffic server can result in all VirtualHosts being made unavailable due to normal traffic levels.

The value is the number of connections in a given second at which the block comes into effect, thus a value of "1" will result in all connections being blocked.

See also

Examples

MaxConnectionRate 4

FIXFIX

MaxHostsPerUser

Name

MaxHostsPerUser -- Limit the number of connections per userid

Synopsis

MaxHostsPerUser [ MaxHostsPerUser number|none [message]]

Default

MaxHostsPerUser none

Context

server config, <Anonymous>, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

1.2.4 and later

Description

The MaxHostsPerUser directive configures the maximum number of times different hosts, using a given login, can connect at any given time. The optional argument message may be used which will be displayed to a client attempting to exceed the maximum value. If message is not supplied, a default message of "Sorry, the maximum number of hosts (%m) for this user already connected."

Examples

MaxHostsPerUser 1 "Sorry, you may not connect more than one time."
Results in: 530 Sorry, you may not connect more than one time.

MaxInstances

Name

MaxInstances -- Sets the maximum number of child processes to be spawned

Synopsis

MaxInstances [ MaxInstances number]

Default

MaxInstances none

Context

server config

Module

mod_core

Compatibility

1.1.6pl1

Description

The MaxInstances directive configures the maximum number of child processes that may be spawned by a parent proftpd process in standalone mode. The directive has no effect when used on a server running in inetd mode. Because each child proftpd process represents a single client connection, this directive also controls the maximum number of simultaneous connections allowed. Additional connections beyond the configured limit are syslog'd and silently disconnected. The MaxInstances directive can be used to prevent undesirable denial-of-service attacks (repeatedly connecting to the ftp port, causing proftpd to fork-bomb). By default, no limit is placed on the number of child processes that may run at one time.

See also

Examples

MaxLoginAttempts

Name

MaxLoginAttempts -- Sets how many password attempts are allowed before disconnection

Synopsis

MaxLoginAttempts [ MaxLoginAttempts number]

Default

MaxLoginAttempts 3

Context

server config, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

0.99.0 and later

Description

The MaxLoginAttempts directive configures the maximum number of times a client may attempt to authenticate to the server during a given connection. After the number of attempts exceeds this value, the user is disconnected and an appropriate message is logged via the syslog mechanism.

See also

Examples

MaxRetrieveFileSize

Name

MaxRetrieveFileSize -- Restrict size of downloaded files

Synopsis

MaxRetrieveFileSize [ number|"*" units ["user"|"group"|"class" expression]]

Default

None

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Directory>, .ftpaccess

Module

mod_xfer

Compatibility

1.2.7rc1 and later

Description

When downloading files to clients (eg serving a RETR request), the server will check for any configured limit against the size of the file being requested, and abort any transfers if the requested file's size exceeds the configured limit.

A single "*" argument configures unlimited file sizes, and is used primarily to override any inherited restrictions from higher contexts. The given number is the number of bytes for the limit, and is followed by a units specifier of (case-insensitive) "Gb" (Gigabytes), "Mb" (Megabytes), "Kb" (Kilobytes), or "B" (bytes). The given number of bytes is multiplied by the appropriate factor.

The optional parameters are used to restrict the file size limits only to specific users. If the "user" restriction is given, then expression is a user-expression specifying to which users the rule applies. Similarly for the "group" restriction. For the "class" restriction, the expression is simply the name of connection class for whom the rule will apply. If no matching user, group, or class expression is found for the current user (in that order), then a limit with no expression (i.e. no "user", "group", or "class" identifier) is applied.

See Also: MaxStoreFileSize

See also

Examples

  # Restrict downloads to only 1 gigabyte
  MaxRetrieveFileSize 1 Gb

  # Restrict downloads for user fred, but allow unlimited download size for
  # everyone else
  MaxStoreFileSize 50 Kb user fred
  MaxStoreFileSize *

MaxStoreFileSize

Name

MaxStoreFileSize -- Restrict size of uploaded files

Synopsis

MaxStoreFileSize [ number|"*" units ["user"|"group"|"class" expression]]

Default

None

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Directory>, .ftpaccess

Module

mod_xfer

Compatibility

1.2.7rc1 and later

Description

When uploading files from a client (eg serving a STOR request), the server will check for any configured limit against the size of the file being sent, and abort any transfers if/when the given file's size exceeds the configured limit.

A single "*" argument configures unlimited file sizes, and is used primarily to override any inherited restrictions from higher contexts. The given number is the number of bytes for the limit, and is followed by a units specifier of (case-insensitive) "Gb" (Gigabytes), "Mb" (Megabytes), "Kb" (Kilobytes), or "B" (bytes). The given number of bytes is multiplied by the appropriate factor.

The optional parameters are used to restrict the file size limits only to specific users. If the "user" restriction is given, then expression is a user-expression specifying to which users the rule applies. Similarly for the "group" restriction. For the "class" restriction, the expression is simply the name of connection class for whom the rule will apply. If no matching user, group, or class expression is found for the current user (in that order), then a limit with no expression (ie no "user", "group", or "class" identifier) is applied.

See Also: MaxRetrieveFileSize

See also

Examples

  # Restrict upload to only 3 megabytes
  MaxStoreFileSize 3 Mb

  # Restrict anonymous uploads to 50k, but allow unlimited upload size for
  # everyone else
  MaxStoreFileSize 50 Kb user anonymous
  MaxStoreFileSize *

MultilineRFC2228

Name

MultilineRFC2228 -- Enable RFC2228 multiline response mode

Synopsis

MultilineRFC2228 [ MultilineRFC2228 on|off]

Default

MultilineRFC2228 off

Context

server config

Module

mod_core

Compatibility

1.2.0pre3 and later

Description

By default, proftpd sends multiline responses as per RFC 959, i.e.: 200-First line More lines... 200 Last line RFC 2228 specifies that "6xy" response codes will be sent as follows: 600-First line 600-More lines... 600 Last line Note that 2228 ONLY specifies this for response codes starting with '6'. Enabling this directive causes ALL responses to be sent in this format, which may be more compatible with certain web browsers and clients. Also note that this is NOT the same as wu-ftpd's multiline responses, which do not comply with any RFC. Using this method of multilines is more likely to be compatible with all clients, although it isn't strictly RFC, and is thus not enabled by default.

See also

Examples

MySQLInfo

Name

MySQLInfo -- Configures the MySQL driver

Synopsis

MySQLInfo [ hostname] [ sqluser] [ sqlpass] [ dbname]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0rc2 and later

Description

This directive is deprecated as of 1.2.0. Please use SQLConnectInfo instead.

Configures the MySQL database driver (the database may be remote). A connection isn't made until use of a SQL feature requires it, after which it may be held open for the lifetime of the FTP session depending on the directives in use. Use `""' to specify a null password.

See also

Examples

Order

Name

Order -- Configures the precedence of the Limit directives

Synopsis

Order [ Order allow,deny|deny,allow]

Default

Order allow,deny

Context

<Limit>

Module

mod_core

Compatibility

0.99.0pl6 and later

Description

The Order directive configures the order in which Allow and Deny directives are checked inside of a <Limit> block. Because Allow directives are permissive, and Deny directives restrictive, the order in which they are examined can significantly alter the way security functions. If the default setting of allow,deny is used, "allowed" access permissions are checked first. If an Allow directive explicitly allows access to the <Limit> context, access is granted and any Deny directives are never checked. If Allow did not explicitly permit access, Deny directives are checked. If any Deny directive applies, access is explicitly denied. Otherwise, access is granted. When deny,allow is used, "deny" access restrictions are checked first. If any restriction applies, access is denied immediately. If nothing is denied, Allow permissions are checked. If an Allow explicitly permits access, access to the entire context is permitted; otherwise access is implicitly denied. For clarification, the following illustrates the steps used when checking Allow/Deny access: Order allow,deny Check Allow directives. If one or more apply, exit with result: ALLOW Check Deny directives. If one or more apply, exit with result: DENY Exit with default implicit ALLOW Order deny,allow Check Deny directives. If one or more apply, exit with result: DENY Check Allow directives. If one or more apply, exit with result: ALLOW Exit with default implicit: DENY

See also

Examples

PassivePorts

Name

PassivePorts -- Specify the ftp-data port range to be used

Synopsis

PassivePorts [ PassivePorts min-pasv-port max-pasv-port]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0rc2 and later

Description

PassivePorts restricts the range of ports from which the server will select when sent the PASV command from a client. The server will randomly choose a number from within the specified range until an open port is found. Should no open ports be found within the given range, the server will default to a normal kernel-assigned port, and a message logged.

The port range selected must be in the non-privileged range (eg. greater than or equal to 1024); it is STRONGLY RECOMMENDED that the chosen range be large enough to handle many simultaneous passive connections (for example, 49152-65534, the IANA-registered ephemeral port range).

See also

Examples

# Use the IANA registered ephemeral port range
PassivePorts 49152 65534

PathAllowFilter

Name

PathAllowFilter -- FIXME FIXME

Synopsis

PathAllowFilter [ PathAllowFilter regular-expression]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

1.1.7 and later

Description

PathAllowFilter allows the configuration of a regular expression that must be matched for all newly uploaded (stored) files. The regular expression is applied against the entire pathname specified by the client, so care must be taken when creating a proper regex. Paths that fail the regex match result in a "Forbidden filename" error being returned to the client. If the regular-expression argument contains whitespace, it must be enclosed in quotes.

See also

Examples

# Only allow a-z 0-9 . - _ in file names,
PathAllowFilter ^[a-z0-9._-]+$

# as above but with upper case characters as well
PathAllowFilter ^[A-Za-z0-9._-]+$

PathDenyFilter

Name

PathDenyFilter -- FIXME FIXME

Synopsis

PathDenyFilter [ PathDenyFilter regular-expression]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

1.1.7 and later

Description

Similar to PathAllowFilter, PathDenyFilter specifies a regular expression which must not match any uploaded pathnames. If the regex does match, a "Forbidden filename" error is returned to the client. This can be especially useful for forbidding .ftpaccess or .htaccess files.

See also

Examples

# We don't want .ftpaccess or .htaccess files to be uploaded
PathDenyFilter "(\\.ftpaccess)|(\\.htaccess)$"

PersistentPasswd

Name

PersistentPasswd -- FIXME FIXME

Synopsis

PersistentPasswd [ PersistentPasswd on|off]

Default

Platform dependent

Context

server config

Module

mod_unixpw

Compatibility

1.1.5 and later

Description

The PersistentPasswd directive controls how proftpd handles authentication, user/group lookups, and user/group to name mapping. If set to On, proftpd will attempt to open the system-wide /etc/passwd, /etc/group (and /etc/shadow, potentially) files itself, holding them open even during a chroot()ed login (note that /etc/shadow is never held open, for security reasons). On some platforms, you must turn this option on, as the libc functions are incapable of accessing these databases from inside of a chroot(). At configure-time, the configuration script will attempt to detect whether or not you need this support, and make it the default. However, such "guessing" may fail, and you will have to manually enable or disable the feature. If you cannot see user or group names when performing a directory listing inside an anonymous chrooted login, this indicates you must enable the directive. Use of the AuthUserFile or AuthGroupFile directives will force partial support for persistent user or group database files; regardless of PersistentPasswd's setting.

Note: NIS or NIS+ users will most likely want to disable this feature, regardless of proftpd's detected configuration defaults. Failure to disable this will make your NIS/NIS+ maps not work! On certain systems, you may also need to compile ProFTPD with the --enable-autoshadow option in order to authenticate both users from NIS maps and local users.

See also

Examples

PidFile

Name

PidFile -- Set the filepath to hold the pid of the master server

Synopsis

PidFile [ PidFile filename]

Default

none

Context

server config, <Global>

Module

mod_core

Compatibility

1.2.0rc2 and later

Description

The PidFile directive sets the file to which the server records the process id of the daemon. The filename should be relative to the system root, ie /var/run/proftpd/pidfile. The PidFile is only used in standalone mode. It is often useful to be able to send the server a signal, so that it closes and then reopens its ErrorLog and TransferLog, and re-reads its configuration files. This is done by sending a SIGHUP (kill -1) signal to the process id of the master daemon listed in the PidFile.

See also

Examples

Port

Name

Port -- Set the port for the control socket

Synopsis

Port [ Port port-number]

Default

Port 21

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

0.99.0 and later

Description

The Port directive configures the TCP port which proftpd will listen on while running in standalone mode. It has no effect when used upon a server running in inetd mode (see ServerType). The directive can be used in conjunction with <VirtualHost> in order to run a virtual server on the same IP address as the master server, but listening on a different port.

For any server, either <VirtualHost> or server config, setting Port 0 effectively turns off that server.

See also

Examples

PostgresInfo

Name

PostgresInfo -- Postgres backend configuration (Deprecated)

Synopsis

PostgresInfo [ hostname] [ [sqluser] [ sqlpass]] [ dbname]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0rc2 and later

Description

This directive is deprecated, please use SQLConnectInfo instead.

Configures the Posgresql database driver (the database may be remote). A connection isn't made until use of a SQL feature requires it, after which it may be held open for the lifetime of the FTP session depending on the directives in use.

See also

Examples

PostgresInfo myserver.example.com proftpd wibble ftpusers

PostgresPort

Name

PostgresPort -- Sets the port postgres is listening on

Synopsis

PostgresPort [ portnumber]

Default

5432

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0rc2 and later

Description

This directive is deprecated, please use SQLConnectInfo instead

Specifies which TCP/IP port to use for connecting. Default is 5432, or UNIX socket for localhost.

See also

Examples

PostgresPort 3306

RLimitCPU

Name

RLimitCPU -- Configure the maximum CPU time in seconds used by a process

Synopsis

RLimitCPU [ RLimitCPU ["daemon"|"session"|"none"] soft-limit|"max" [hard-limit|"max"]]

Default

System defaults

Context

server config

Module

mod_core

Compatibility

1.2.1rc1 and later

Description

RLimitCPU takes from one to three parameters. The first parameter may be one of "daemon" (applies the limit only to the daemon process), "session" (applies the limit only to child processes handling each FTP session), or "none" (disables any possibly inherited limits). Note that if "daemon" is used, the directive may then only occur in the "server config" context. If none of these keywords are used, the limit is assumed to apply to both daemon and session processes. After any potential keyword, the resource limit must be set. The next parameter is also optional, and sets the maximum resource limit. Either limit parameter can be a number, or "max" to indicate to the server that the limit should be set to the maximum allowed by the operating system.

CPU resource limits are expressed in seconds per process.

Examples

RLimitMemory

Name

RLimitMemory -- Configure the maximum memory in bytes used by a process

Synopsis

RLimitMemory [ RLimitMemory ["daemon"|"session"|"none"] soft-limit[units]|"max" [hard-limit[units]|"max"]]

Default

None

Context

server config

Module

mod_core

Compatibility

1.2.1rc1 and later

Description

RLimitMemory takes from one to three parameters. The first parameter may be one of "daemon" (applies the limit only to the daemon process), "session" (applies the limit only to child processes handling each FTP session), or "none" (disables any possibly inherited limits). Note that if "daemon" is used, the directive may then only occur in the "server config" context. If none of these keywords are used, the limit is assumed to apply to both daemon and session processes. After any potential keyword, the resource limit must be set. The next parameter is also optional, and sets the maximum resource limit. Either limit parameter can be a number, or "max" to indicate to the server that the limit should be set to the maximum allowed by the operating system.

Memory resource limits are expressed in bytes per process. An optional case-insensitive units specifier may follow the number of bytes given: G (Gigabytes), M (Megabytes), K (Kilobytes), or B (bytes). If the units specifier is used, the given number of bytes is multiplied by the appropriate factor.

See Also

RLimitCPU, RLimitOpenFiles

RLimitOpenFiles

Name

RLimitOpenFiles -- Configure the maximum number of open files used by a process

Synopsis

RLimitOpenFiles [ RLimitOpenFiles ["daemon"|"session"|"none"] soft-limit|"max" [hard-limit|"max"]]

Default

None

Context

server config

Module

mod_core

Compatibility

1.2.1rc1 and later

Description

RLimitOpenFiles takes from one to three parameters. The first parameter may be one of "daemon" (applies the limit only to the daemon process), "session" (applies the limit only to child processes handling each FTP session), or "none" (disables any possibly inherited limits). Note that if "daemon" is used, the directive may then only occur in the "server config" context. If none of these keywords are used, the limit is assumed to apply to both daemon and session processes. After any potential keyword, the resource limit must be set. The next parameter is also optional, and sets the maximum resource limit. Either limit parameter can be a number, or "max" to indicate to the server that the limit should be set to the maximum allowed by the operating system.

File resource limits are expressed in number of files per process.

See Also:

RLimitCPU, RLimitMemory

RadiusAcctServer

Name

RadiusAcctServer -- Setup RADIUS accounting details

Synopsis

RadiusAcctServer [ server[:port] shared-secret [timeout]]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_radius

Compatibility

1.2.7rc1 and later

Description

The RadiusAcctServer is used to specify a RADIUS server to be used for accounting. The server parameter may be either an IP address or a DNS hostname. If not specified, the port used will be the IANA-registered 1813. The optional timeout parameter is used to tell mod_radius how long to wait for a response from the server; it defaults to 30 seconds.

Multiple RadiusAcctServers may be configured; each will be tried, in order of appearance in the configuration file, until that server times out or mod_radius receives a response.

If no RadiusAcctServers are configured, mod_radius will not use RADIUS for accounting.

RadiusAuthServer

Name

RadiusAuthServer -- Setup RADIUS authenticator details

Synopsis

RadiusAuthServer [ server[:port] shared-secret [timeout]]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_radius

Compatibility

1.2.7rc1 and later

Description

The RadiusAcctServer is used to specify a RADIUS server to be used for accounting. The server parameter may be either an IP address or a DNS hostname. If not specified, the port used will be the IANA-registered 1813. The optional timeout parameter is used to tell mod_radius how long to wait for a response from the server; it defaults to 30 seconds.

Multiple RadiusAcctServers may be configured; each will be tried, in order of appearance in the configuration file, until that server times out or mod_radius receives a response.

If no RadiusAcctServers are configured, mod_radius will not use RADIUS for accounting.

RadiusEngine

Name

RadiusEngine -- Enable RADIUS support

Synopsis

RadiusEngine [ on|off]

Default

off

Context

server config, <Global>, <VirtualHost>

Module

mod_radius

Compatibility

1.2.7rc1 and later

Description

The RadiusEngine directive enables or disables the module's runtime RADIUS engine. If it is set to off this module does no RADIUS authentication or accounting at all. Use this directive to disable the module instead of commenting out all mod_radius directives.

See also

RadiusLog

Name

RadiusLog -- Specify the logfile for reporting / debugging

Synopsis

RadiusLog [ "file"|none]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_radius

Compatibility

1.2.7rc1 and later

Description

The RadiusLog directive is used to a specify a log file for mod_radius reporting and debugging, and can be done a per-server basis. The file parameter must be the full path to the file to use for logging. Note that this path must not be to a world-writeable directory and, unless AllowLogSymlinks is explicitly set to on (generally a bad idea), the path must not be a symbolic link.

If file is "none", no logging will be done at all; this setting can be used to override a RadiusLog setting inherited from a <Global> context.

See also

Examples

FIXFIXFIX

FIXFIX

RadiusRealm

Name

RadiusRealm -- Setup the authentication realm

Synopsis

RadiusRealm [ realm]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_radius

Compatibility

1.2.7rc1 and later

Description

The RadiusRealm directive configures a realm string that will be added to the username in the constructed RADIUS packets.

See also

Examples

  RadiusRealm .castaglia.org

FIXFIX

RadiusUserInfo

Name

RadiusUserInfo -- Configure login information via RADIUS

Synopsis

RadiusUserInfo [ uid gid home shell [suppl-group-names suppl-group-ids]]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_radius

Compatibility

1.2.7rc1 and later

Description

The RadiusUserInfo directive is used to configure login information used for every user authenticated via RADIUS. The optional suppl-group-names and suppl-group-ids parameters are used to specify supplemental group membership for each user; the number of names and IDs must match if these parameters are used.

In order to support RADIUS servers that may use custom attributes in their Access-Accept response packets to supply user information back to the RADIUS client (mod_radius in this case), this directive allows the following syntax for some of its parameters:

  $(attribute-id:default-value)

where the enclosing $() signals that the parameter is to be supplied by the RADIUS server, attribute-id is the custom attribute ID for which to search in the response packet, and default-value is the value to use in case the requested attribute is not present in the response packet. This syntax is not supported for the suppl-group-names or suppl-group-ids parameters.

If RadiusUserInfo is not used, mod_radius will perform pure "yes/no" authentication only, in the style of PAM. The information that would have been configured via this directive will be pulled from other sources (e.g. /etc/passwd, AuthUserFiles, MySQL tables, etc).

See also

RateReadBPS

Name

RateReadBPS -- FIXME FIXME

Synopsis

RateReadBPS [ RateReadBPS byte_per_sec-number]

Default

0

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>

Module

mod_xfer

Compatibility

1.2.0 and later

Description

RateReadBPS sets the allowed byte per second download bandwidth in the given config context. Zero means no bandwidth limit. (See RateReadFreeBytes about limiting bandwidth only after some amount of downloaded bytes.) The usual place for this directive is in <VirtualHost> or <Directory> sections.

See also

Examples

RateReadFreeBytes

Name

RateReadFreeBytes -- FIXME FIXME

Synopsis

RateReadFreeBytes [ RateReadFreeBytes number of bytes]

Default

0

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>

Module

mod_xfer

Compatibility

1.2.0 and later

Description

RateReadFreeBytes is the amount of bytes to be transferred without any bandwidth limits, so with that option you can give full bandwidth for small files while limiting big ones. (See RateReadHardBPS on further info about what happens after the free amount was transferred.)

See also

Examples

RateReadHardBPS

Name

RateReadHardBPS -- FIXME FIXME

Synopsis

RateReadHardBPS [ RateReadHardBPS on/off]

Default

off

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>

Module

mod_xfer

Compatibility

1.2.0 and later

Description

RateReadHardBPS forces the bandwidth to the given RateReadBPS value after the RateReadFreeBytes amount of file was transfered. This means that if the user have huge bandwidth and downloaded the "free" amount fast, HardBPS will stop the transfer until the average goes down to the given limit. If the amount of FreeBytes is high and the ReadBPS is low then the user may wait for extended periods of time until the transfer continues. :-)

See also

Examples

RateWriteBPS

Name

RateWriteBPS -- FIXME FIXME

Synopsis

RateWriteBPS [ RateWriteBPS byte_per_sec-number]

Default

0

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>

Module

mod_xfer

Compatibility

1.2.0 and later

Description

RateWriteBPS sets the allowed byte per second upload bandwidth in the given config context. Zero means no bandwidth limit. (See RateWriteFreeBytes about limiting bandwidth only after some amount of uploaded bytes.) The usual place for this directive is in <VirtualHost> or <Directory> sections.

See also

Examples

RateWriteFreeBytes

Name

RateWriteFreeBytes -- FIXME FIXME

Synopsis

RateWriteFreeBytes [ RateWriteFreeBytes number of bytes]

Default

0

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>

Module

mod_xfer

Compatibility

1.2.0 and later

Description

RateWriteFreeBytes is the amount of bytes to be transferred without any bandwidth limits, so with that option you can give full bandwidth for small files while limiting big ones. (See RateWriteHardBPS on further info about what happens after the free amount was transferred.)

See also

Examples

RateWriteHardBPS

Name

RateWriteHardBPS -- FIXME FIXME

Synopsis

RateWriteHardBPS [ RateWriteHardBPS on/off]

Default

off

Context

server config, <VirtualHost>, <Anonymous>, <Directory>, <Global>

Module

mod_xfer

Compatibility

1.2.0 and later

Description

RateWriteHardBPS forces the bandwidth to the given RateWriteBPS value after the RateWriteFreeBytes amount of file was transfered. This means that if the user have huge bandwidth and uploaded the "free" amount fast, HardBPS will stop the transfer until the average goes down to the given limit. If the amount of FreeBytes is high and the WriteBPS is low then the user may wait for extended periods of time until the transfer continues. :-) RateWriteHardBPS RatioFile (mod_ratio) Incomplete Ratios (mod_ratio) Incomplete RatioTempFile (mod_ratio) Incomplete

See also

Examples

RatioFile

Name

RatioFile -- Ratio directive

Synopsis

RatioFile [ RatioFile foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The RatioFile directive .... Example: RatioFile

See also

Examples

RatioTempFile

Name

RatioTempFile -- Ratio directive

Synopsis

RatioTempFile [ RatioTempFile foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The RatioTempFile directive .... Example: RatioTempFile

See also

Examples

Ratios

Name

Ratios -- FIXME FIXME

Synopsis

Ratios [ Ratios foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The Ratios directive .... Example: Ratios

See also

Examples

RequireValidShell

Name

RequireValidShell -- Allow connections based on /etc/shells

Synopsis

RequireValidShell [ RequireValidShell on|off]

Default

RequireValidShell on

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

0.99.0 and later

Description

The RequireValidShell directive configures the server, virtual host or anonymous login to allow or deny logins which do not have a shell binary listed in /etc/shells. By default, proftpd disallows logins if the user's default shell is not listed in /etc/shells. If /etc/shells cannot be found, all default shells are assumed to be valid.

See also

Examples

RootLogin

Name

RootLogin -- Permit root user logins

Synopsis

RootLogin [ RootLogin on|off]

Default

RootLogin off

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

1.1.5 and later

Description

Normally, proftpd disallows root logins under any circumstance. If a client attempts to login as root, using the correct password, a special security message is sent to syslog. When the RootLogin directive is turned On, the root user may authenticate just as any other user could (assuming no other access control measures deny access); however the root login security message is still sysloged. Obviously, extreme care should be taken when using this directive.

The use of RootLogin in the Anonymous context is only valid when the User / Group defined in the Anonymous block is set to 'root'

See also

Examples

SQLAuthTypes

Name

SQLAuthTypes -- FIXME FIXME

Synopsis

SQLAuthTypes [ [OpenSSL]] [ [Crypt]] [ [Backend]] [ [Plaintext]] [ [Empty]]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

This directive deprecates 'SQLEmptyPasswords', 'SQLScrambledPasswords', 'SQLSSLHashedPasswords', 'SQLPlaintextPasswords', and 'SQLEncryptedPasswords'. Specifies the allowed authentication types and their check order. YOU MUST SPECIFY AT LEAST ONE AUTHENTICATION METHOD. For example: SQLAuthTypes Crypt Empty means check whether the password in the database matches in UNIX crypt() format; if that fails, check to see if the password in the database is empty (matching ANY given password); if that fails, mod_sql refuses to authenticate the user. Current Types Plaintext: allows passwords in the database to be in plaintext OpenSSL: allows passwords in the database to be of the form '{digestname}hashedvalue'. This check is only available if you define 'HAVE_OPENSSL' when you compile proftd and you link with the OpenSSL 'crypto' library. Crypt: allows passwords in the database to be in UNIX crypt() form Backend: a database-specific backend check function. Not all backends support this. Specifically, the MySQL backend uses this type to authenticate MySQL 'PASSWORD()' encrypted passwords. The Postgres backend does nothing. Empty: allows empty passwords in the database, which match against ANYTHING the user types in. The database field must be a truly empty string -- that is, NULL values are never accepted. BE VERY CAREFUL WITH THIS AUTHTYPE.

SQLAuthenticate

Name

SQLAuthenticate --  Specify authentication methods and what to authenticate

Synopsis

SQLAuthenticate {on | off}

  or

SQLAuthenticate [ users [*] ] [ group [*] ] [ userset [fast] ] [ groupset [fast] ]

Default

SQLAuthenticate on

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

The SQLAuthenticate directive controls the behavior of mod_sql regarding the authentication process. SQLAuthenticate can provide fine grained control over authentication of logins and file access for both users and groups. Using this directive, mod_sql can be configured to be the authoritative authentication mechanism - in that case, mod_sql provides authentication and all other authentication mechanisms will be bypassed.

The syntax for SQLAuthenticate can take one of two possible formats. The simplest syntax is a simple on | off format:

on

mod_sql will perform login authentication and will also control file access using both user ID and group ID. This is equivalent to the following alternative syntax:

SQLAuthenticate users groups userset groupset

off

mod_sql will not perform user or group lookups nor will it control file access or functionality.

A more complex syntax is provided to provide finer control of the behavior of mod_sql. Two features in particular may be controlled via this syntax:

  • Authorititative lookups and authentication

  • File access or functionality control based on UID or GID

The following command options are used to control these features. Note that each of these options may be listed in any order.

users[*]

If this option is present, user lookups will take place. Appending an asterisk to users will cause mod_sql to become authoritiative for user lookups. All other user authentication methods will be ignored. If this option is not included, mod_sql will not perform any user lookups.

groups[*]

If this option is present, group lookups will take place. Appending an asterisk to groups will cause mod_sql to become authoritiative for group lookups. All other authentication methods will be ignored. If this option is not included, mod_sql will not perform any group lookups.

userset[fast]

If this option is present, mod_sql will control file access or functionality by processing the (get|set|end)pwent calls. These calls are used to determine file access rights based on username. This option has no effect if the user[*] option is not present.

If mod_sql is used to authenticate a significant number of users, the (set|get|end)pwent calls can become expensive. The number of queries will be n+1, where n is the number of users to be looked up. On a large system, this can significantly slow logins. Using the usersetfast option will cause a single query to be performed to lookup all users, speeding up the login process. The drawback to this option is that memory utilization will be increased.

groupset[fast]

If this option is present, mod_sql will control file access or functionality by processing the (get|set|end)grent calls. These calls are used to determine file access rights based on groupname. This option has no effect if the group[*] option is not present.

If mod_sql is used to authenticate a significant number of groups, the (set|get|end)grent calls can become expensive. The number of queries will be n+1, where n is the number of groups to be looked up. On a large system, this can significantly slow logins. Using the groupsetfast option will cause a single query to be performed to lookup all groups, speeding up the login process. The drawback to this option is that memory utilization will be increased.

Turning off (not including) userset or groupset affects the functionality of mod_sql. Not allowing these lookups may remove the ability to control access or control functionality by group membership, depending on your other auth handlers and the data available to them. At the same time, choosing not to do these lookups may dramatically speed login for many large sites.

The 'fast' suffix is not appropriate for every site. Normally, mod_sql will retrieve a list of users and groups, and get information from the database on a per-user or per-group basis. This is query intensive -- it requires (n+1) queries, where n is the number of users or groups to lookup. By choosing 'fast' lookups, mod_sql will make a single SELECT query to get information from the database.

In exchange for the radical reduction in the number of queries, the single query will increase the memory consumption of the process -- all group or user information will be read at once rather than in discrete chunks.

Note:If the groupset option is specified, mod_sql requires that the SQL group table contain only a single record for each group. All members of a group must be specified in the single record. Make sure that the group table is created with a sufficent column size for group members - for example, a MySQL group table should use type TEXT for the group members column, providing 65535 characters for listing all of the group members in a comma-separated list.

Examples

If user and group lookups are desired, but other means will be used to perform file access control, and the user/group lookups are not to be authoritatuve, the following directive syntax is appropriate. This is not a particuarly interesting configuration.

SQLAuthenticate users groups

A more interesting configuration for mod_sql is shown below. In this configuration, mod_sql is authoritative for both users and groups, and also performs access control based on both user name and group membership. Utilizing a configuration such as this removes the need to provide a shell account for users on the server, while still providing "non-anonymous" ftp access with access control. The "fast" option is also used to speed up logins, at the expense of increased memory utilization.

SQLAuthenticate users* groups* usersetfast groupsetfast

SQLAuthoritative

Name

SQLAuthoritative -- Deprecated

Synopsis

SQLAuthoritative [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLConnectInfo

Name

SQLConnectInfo -- FIXME FIXME

Synopsis

SQLConnectInfo [ connection-info] [ [username]] [ [password]]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

This directive deprecates 'MySQLInfo', 'PostgresInfo', and 'PostgresPort'. Specifies connection information. Connection-info specifies the database, host, port, and other backend-specific information. username and password specify the username and password to connect as, respectively. Both default to NULL, which the backend will treat in some backend-specific manner. If you specify a password, you MUST specify a username. Any given backend has the opportunity (but not the responsibility) to check for syntax errors in the connection-info field at proftpd startup, but you shouldn't expect semantic errors (i.e., can't connect to the database) to be caught until mod_sql attempts to connect for a given host. The MySQL and Postgres backends connection-info is expected to be of the form: database[@hostname][:port] hostname will default to a backend-specific hostname (which happens to be 'localhost' for both the MySQL and Postgres backends), and port will default to a backend-specific default port (3306 for the MySQL backend, 5432 for the Postgres backend). Examples: SQLConnectInfo ftpusers@foo.com means "Try connecting to the database 'ftpuser' via the default port at 'foo.com'. Use a NULL username and a NULL password." SQLConnectInfo ftpusers:3000 admin means "Try connecting to the database 'ftpuser' via port 3000 at 'localhost'. Use the username 'admin' and a NULL password." SQLConnectInfo ftpusers@foo.com:3000 admin mypassword means "Try connecting to the database 'ftpuser' via port 3000 at 'foo.com'. Use the username 'admin' and the password 'mypassword'" Backends may require different information in the connection-info field; check your backend module for specifics.

SQLDefaultGID

Name

SQLDefaultGID -- FIXME FIXME

Synopsis

SQLDefaultGID [ defaultgid]

Default

65533

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Sets the default GID for users. Must be greater than SQLMinID.

SQLDefaultHomedir

Name

SQLDefaultHomedir -- FIXFIXFIX

Synopsis

SQLDefaultHomedir [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLDefaultUID

Name

SQLDefaultUID -- FIXME FIXME

Synopsis

SQLDefaultUID [ defaultuid]

Default

65533

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Sets the default UID for users. Must be greater than SQLMinID.

SQLDoAuth

Name

SQLDoAuth -- Deprecated

Synopsis

SQLDoAuth [ on|off]

Default

on

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Activates SQL authentication. This overrides all other directives -- SQLDoGroupAuth and SQLAuthoritative are ineffectual if SQLDoAuth is off.

SQLDoGroupAuth

Name

SQLDoGroupAuth -- Deprecated

Synopsis

SQLDoGroupAuth [ on|off]

Default

on

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

This directive causes mod_sql to pretend it has no group information. It necessarily breaks ALL CONFIG FILES up to 1.2.0rc2, since mod_sql now assumes that group information is available UNLESS this directive is set to OFF. This DOESN'T override SQLAuthoritative -- if SQLAuthoritative is set to 'On' but SQLDoGroupAuth is set to 'Off', all group-related queries will fail without giving other modules the opportunity to handle them. Prior to 1.2.0, there was no way to provide group information from the database. This caused a few bugs, and reduced the functionality of this module.

SQLEmptyPasswords

Name

SQLEmptyPasswords -- Allow zero length passwords (DEPRECATED)

Synopsis

SQLEmptyPasswords [ on|off]

Default

off

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0rc2 and later

Description

This directive is deprecated, please use SQLAuthTypes instead

Specifies whether an empty (non-NULL but zero-length) password is acceped from the database. Default is no, and truly NULL passwords are never accepted. If the retrieved password is empty then whatever password the user typed is accepted as valid, but the module logs a warning at debug level 4.

See also

Examples

SQLEmptyPasswords on

SQLEncryptedPasswords

Name

SQLEncryptedPasswords -- Assume SQL passwords are encrypted (DEPRECATED)

Synopsis

SQLEncryptedPasswords [ on|off]

Default

on

Context

server config

Module

mod_sql

Compatibility

1.2.0rc2 and later

Description

This directive is deprecated, please SQLAuthTypes instead

Specifies whether the password in the database may be in UNIX crypt() format. Default is true, with this being the only check done. A tool for generating crypted password text may be found at ftp://ftp.linpeople.org/pub/People/lilo/source/makepasswd-1.07.tar.gz

See also

Examples

SQLEncryptedPasswords on

SQLGidField

Name

SQLGidField -- Set the field holding gid information (deprecated)

Synopsis

SQLGidField [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLGroupGIDField

Name

SQLGroupGIDField -- Deprecated

Synopsis

SQLGroupGIDField [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLGroupInfo

Name

SQLGroupInfo -- FIXFIXFIX

Synopsis

SQLGroupInfo [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLGroupMembersField

Name

SQLGroupMembersField -- Deprecated

Synopsis

SQLGroupMembersField [ fieldname]

Default

members

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Specifies the field in the group table that holds the group's member list.

SQLGroupTable

Name

SQLGroupTable -- Deprecated

Synopsis

SQLGroupTable [ tablename]

Default

groups

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Specifies the name of the table that holds group information.

SQLGroupWhereClause

Name

SQLGroupWhereClause -- FIXFIXFIX

Synopsis

SQLGroupWhereClause [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLGroupnameField

Name

SQLGroupnameField -- Deprecated

Synopsis

SQLGroupnameField [ Syntax: fieldname]

Default

groupname

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Specifies the field in the group table that holds the group name.

SQLHomedir

Name

SQLHomedir -- Deprecated

Synopsis

SQLHomedir [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLHomedirField

Name

SQLHomedirField -- Deprecated

Synopsis

SQLHomedirField [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLHomedirOnDemand

Name

SQLHomedirOnDemand -- FIXME FIXME

Synopsis

SQLHomedirOnDemand [ on|off]

Default

off

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Specifies whether to automatically create a user's home directory if it doesn't exist at login.

SQLLog

Name

SQLLog -- FIXFIXFIX

Synopsis

SQLLog [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLLogDirs

Name

SQLLogDirs -- Deprecated

Synopsis

SQLLogDirs [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLLogHits

Name

SQLLogHits -- Deprecated

Synopsis

SQLLogHits [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLLogHosts

Name

SQLLogHosts -- Deprecated

Synopsis

SQLLogHosts [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLLogStats

Name

SQLLogStats -- Deprecated

Synopsis

SQLLogStats [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLLoginCountField

Name

SQLLoginCountField -- Deprecated

Synopsis

SQLLoginCountField [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLMinID

Name

SQLMinID -- FIXME FIXME

Synopsis

SQLMinID [ minimumid]

Default

999

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

SQLMinID is checked whenever retrieving a user's GID or UID. If the retrieved values for GID or UID are less than the value of SQLMinID, they are reported as the values of, respectively, 'SQLDefaultGID' and 'SQLDefaultUID'.

SQLMinUserGID

Name

SQLMinUserGID -- FIXFIXFIX

Synopsis

SQLMinUserGID [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLMinUserUID

Name

SQLMinUserUID -- FIXFIXFIX

Synopsis

SQLMinUserUID [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLNamedQuery

Name

SQLNamedQuery -- FIXFIXFIX

Synopsis

SQLNamedQuery [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLNegativeCache

Name

SQLNegativeCache -- Enable negative caching for SQL lookups

Synopsis

SQLNegativeCache [ on off ]

Default

SQLNegativeCache off

Context

server config, <VirtualHost>, <Global>

Module

mod_sql

Compatibility

mod_sql v4.10 and later

Description

SQLNegativeCache specifies whether or not to cache negative responses from SQL lookups when using SQL for UID/GID lookups. Depending on your SQL tables, there can be a significant delay when a directory listing is performed as the UIDs not in the SQL database are repeatedly looked up in an attempt to present usernames instead of UIDs in directory listings. With SQLNegativeCache set to on, negative ("not found") responses from SQL queries will be cached and speed will improve on directory listings that contain many users not present in the SQL database.

See also

Examples

SQLPasswordField

Name

SQLPasswordField -- Deprecated

Synopsis

SQLPasswordField [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLProcessGrEnt

Name

SQLProcessGrEnt -- Deprecated

Synopsis

SQLProcessGrEnt [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLProcessPwEnt

Name

SQLProcessPwEnt -- Deprecated

Synopsis

SQLProcessPwEnt [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLRatioStats

Name

SQLRatioStats -- FIXFIXFIX

Synopsis

SQLRatioStats [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLRatios

Name

SQLRatios -- FIXFIXFIX

Synopsis

SQLRatios [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLSSLHashedPasswords

Name

SQLSSLHashedPasswords -- FIXME FIXME

Synopsis

SQLSSLHashedPasswords [ on|off]

Default

off

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

This directive is DEPRECATED. Please use SQLAuthTypes instead. Specifies whether to accept passwords of the form {digestname}hashedpassword from the database. This directive is only available if you define 'HAVE_OPENSSL' when you compile proftd and you link with the OpenSSL 'crypto' library. As an example, any of the following password entries in the database would match if the user typed the password 'testpassword': {SHA}IoFZRnP0iujh/70lps6DjKPgwkk= {SHA1}i7YRj4/Wk1rQh2o740pxfTJwj/0= {MD2}nS6iguewvAdrCnOMyQjB1w== {MD4}5wsGtJCkyXBzDJoVsQKjSg== {MD5}4WsquNEjFL9O+9YgOQbqbA==

SQLScrambledPasswords

Name

SQLScrambledPasswords -- FIXME FIXME

Synopsis

SQLScrambledPasswords [ on|off]

Default

off

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

This directive is DEPRECATED. Please use SQLAuthTypes instead. Specifies whether to accept passwords in a backend specific format. For the MySQL backend, this means 'PASSWORD()' scrambled passwords. For the Postgres backend, this check does nothing.

SQLShellField

Name

SQLShellField -- Deprecated

Synopsis

SQLShellField [ fieldname]

Default

shell

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

Specifies the field in the user table that holds the user's shell. If this field doesn't exist or the result of the query is NULL, the shell is reported as "".

SQLShowInfo

Name

SQLShowInfo -- FIXFIXFIX

Synopsis

SQLShowInfo [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLUidField

Name

SQLUidField -- Set the field holding uid information (deprecated)

Synopsis

SQLUidField [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLUserInfo

Name

SQLUserInfo -- FIXFIXFIX

Synopsis

SQLUserInfo [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLUserTable

Name

SQLUserTable -- Deprecated

Synopsis

SQLUserTable [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLUserWhereClause

Name

SQLUserWhereClause -- FIXFIXFIX

Synopsis

SQLUserWhereClause [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLUsernameField

Name

SQLUsernameField -- Deprecated

Synopsis

SQLUsernameField [ "name" limit|regex|ip value]

Default

FIXFIXFIX

Context

server config, <Global>, <VirtualHost>, <Anonymous>, <Limit>, .ftpaccess

Module

mod_sql

Compatibility

1.2.5rc1 and later

Description

FIX FIX FIX

See also

Examples

FIXFIXFIX

FIXFIX

SQLWhereClause

Name

SQLWhereClause -- FIXME FIXME

Synopsis

SQLWhereClause [ whereclause]

Default

none

Context

server config, <Global>, <VirtualHost>

Module

mod_sql

Compatibility

1.2.0 and later

Description

This directive deprecates 'SQLKey' and 'SQLKeyField'. Specifies a where clause that is added to every user query (this has no effect on group queries). The where clause *must* contain all relevant punctuation, and *must not* contain a leading 'and'. As an example of switching from the old-style 'SQLKey' and 'SQLKeyField' directives, if you had: SQLKey true SQLKeyfield LoginAllowed You would now use: SQLWhereClause "LoginAllowed = 'true'" This would be appended to every user-related query as the string " and (LoginAllowed = 'true')"

SaveRatios

Name

SaveRatios -- FIXME FIXME

Synopsis

SaveRatios [ SaveRatios foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The SaveRatios directive .... Example: SaveRatios

See also

Examples

ScoreboardFile

Name

ScoreboardFile -- Sets the name and path of the scoreboard file

Synopsis

ScoreboardFile [ path]

Default

ScoreboardFile /var/run/proftpd.scoreboard

Context

server config

Module

mod_core

Compatibility

1.2.7rc1 and later

Description

The ScoreboardFile directive sets the path to the file where the daemon will store its run-time "scoreboard" session information. This file is necessary for MaxClients to work properly, as well as other utilities (such as ftpwho and ftpcount).

This directive deprecates ScoreboardPath.

See also

Examples

ScoreboardFile /var/run/proftpd.scoreboard

ServerAdmin

Name

ServerAdmin -- Set the address for the server admin

Synopsis

ServerAdmin [ ServerAdmin "admin-email-address"]

Default

ServerAdmin root@[ServerName]

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

0.99.0pl10 and later

Description

The ServerAdmin directive sets the email address of the administrator for the server or virtualhost. This address is displayed in magic cookie replacements (see DisplayLogin and DisplayFirstChdir).

See also

Examples

ServerIdent

Name

ServerIdent -- Set the message displayed on connect

Synopsis

ServerIdent [ ServerIdent off|on [identification string]]

Default

ServerIdent on "ProFTPD [version] Server (server name) [hostname]"

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0pre2 and later

Description

The ServerIdent directive sets the default message displayed when a new client connects. Setting this to off displays "[hostname] FTP server ready." If set to on, the directive can take an optional string argument, which will be displayed instead of the default text. Sites desiring to give out minimal information will probably want a setting like ServerIdent on "FTP Server ready.", which won't even reveal the hostname.

See also

Examples

ServerIdent on "Welcome to ftp.linux.co.uk"

ServerLog

Name

ServerLog -- Configure logs on a per-server basis

Synopsis

ServerLog [ path]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_log

Compatibility

1.2.8rc1 and later

Description

The ServerLog directive disables the daemon's use of the syslog mechanism and instead redirects all logging output for the server to the specified filename. The filename argument must contain an absolute path. Use of this directive overrides any facility set by the SyslogFacility directive, as well as overriding any configured SystemLog.

ServerName

Name

ServerName -- Configure the name displayed to connecting users

Synopsis

ServerName [ ServerName "name"]

Default

ServerName "ProFTPD Server [version]"

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

0.99.0 and later

Description

The ServerName directive configures the string that will be displayed to a user connecting to the server (or virtual server if the directive is located in a <VirtualHost> block). See Also: <VirtualHost>

See also

Examples

ServerType

Name

ServerType -- Set the mode proftpd runs in

Synopsis

ServerType [ ServerType type-identifier]

Default

ServerType standalone

Context

server config

Module

mod_core

Compatibility

0.99.0 and later

Description

The ServerType directive configures the server daemon's operating mode. The type-identifier can be one of two values: inetd The daemon will expect to be run from the inetd "super server." New connections are passed from inetd to proftpd and serviced immediately. standalone The daemon starts and begins listening to the configured port for incoming connections. New connections result in spawned child processes dedicated to servicing all requests from the newly connected client.

See also

Examples

ShowDotFiles

Name

ShowDotFiles -- Toggle display of 'dotfiles'

Synopsis

ShowDotFiles [ ShowDotFiles on|off]

Default

ShowDotFiles Off

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_ls

Compatibility

0.99.0pl6 thru 1.2.5, removed in 1.2.6rc1

Description

If set to on, files starting with a '.', except for the directories '.' and '..', will be displayed in directory listings. This directive has been deprecated in favor of LsDefaultOptions -- e.g., LsDefaultOptions "-A" -- and may be removed in future versions. See Also: LsDefaultOptions

See also

Examples

ShowSymlinks

Name

ShowSymlinks -- Toggle the display of symlinks

Synopsis

ShowSymlinks [ ShowSymlinks on|off]

Default

(versions 1.1.5 and beyond) ShowSymlinks On

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_ls

Compatibility

Description

Compatibility: 0.99.0pl6 and later Symbolic links (if supported on the host OS and filesystem) can be either shown in directory listings (including the target of the link) or can be "hidden" (proftpd dereferences symlinks and reports the target's permissions and ownership). The default behavior is to show all symbolic links when normal users are logged in, and hide them for anonymous sessions. If a symbolic link cannot be dereferenced for any reason (permissions, target does not exist, etc) and ShowSymlinks is off, proftpd displays the link as a directory entry of type 'l' (link) with the ownership and permissions of the actual link. Under ProFTPD versions 1.1.5 and higher, the default behavior in regard to ShowSymlinks has been changed so that symbolic links are always displayed as such (in all cases), unless ShowSymlinks off is explicitly set.

See also

Examples

SocketBindTight

Name

SocketBindTight -- Controls how TCP/IP sockets are created

Synopsis

SocketBindTight [ SocketBindTight on|off]

Default

SocketBindTight off

Context

server config

Module

mod_core

Compatibility

0.99.0pl6 and later

Description

The SocketBindTight directive controls how proftpd creates and binds its initial tcp listen sockets in standalone mode (see ServerType). The directive has no effect upon servers running in inetd mode, because listen sockets are not needed or created. When SocketBindTight is set to off (the default), a single listening socket is created for each port that the server must listen on, regardless of the number of IP addresses being used by <VirtualHost> configurations. This has the benefit of typically requiring a relatively small number of file descriptors for the master daemon process, even if a large number of virtual servers are configured. If SocketBindTight is set to on, a listen socket is created and bound to a specific IP address for the master server and all configured virtual servers. This allows for situations where an administrator may wish to have a particular port be used by both proftpd (on one IP address) and another daemon (on a different IP address). The drawback is that considerably more file descriptors will be required if a large number of virtual servers must be supported. Example: Two servers have been configured (one master and one virtual), with the IP addresses 10.0.0.1 and 10.0.0.2, respectively. The 10.0.0.1 server runs on port 21, while 10.0.0.2 runs on port 2001. SocketBindTight off #default # proftpd creates two sockets, both bound to ALL available addresses. # one socket listens on port 21, the other on 2001. Because each socket is # bound to all available addresses, no other daemon or user process will be # allowed to bind to ports 21 or 2001. ... SocketBindTight on # proftpd creates two sockets again, however one is bound to 10.0.0.1, port 21 # and the other to 10.0.0.2, port 2001. Because these sockets are "tightly" # bound to IP addresses, port 21 can be reused on any address OTHER than # 10.0.0.1, and visa-versa with 10.0.0.2, port 2001. One side-effect of setting SocketBindTight to on is that connections to non-bound addresses will result in a "connection refused" message rather than the typical "500 Sorry, no server available to handle request on xxx.xxx.xxx.xxx.", due to the fact that no listen socket has been bound to the particular address/port pair. This may or may not be aesthetically desirable, depending on your circumstances.

See also

Examples

StoreUniquePrefix

Name

StoreUniquePrefix -- Set the prefix to be added to uniquely generated filenames

Synopsis

StoreUniquePrefix [ "prefix"]

Default

none

Context

server config, <Global>, <VirtualHost>, <Global>, <Anonymous>, <Directory> .ftpaccess

Module

mod_xfer

Compatibility

1.2.6rc1 and later

Description

The StoreUniquePrefix is used to configure a prefix for the generated unique random filenames used for the STOU FTP command. The last six characters of the filename will be random. Slashes are not allowed in the prefix string.

All valid filename characters are allowed except '/'

See also

Examples

StoreUniquePrefix "Wibble"

SyslogFacility

Name

SyslogFacility -- Set the facility level used for logging

Synopsis

SyslogFacility [ SyslogFacility facility-level]

Default

None

Context

server config

Module

mod_core

Compatibility

1.1.6 and later

Description

Proftpd logs its activity via the Unix syslog mechanism, which allows for several different general classifications of logging messages, known as "facilities." Normally, all authentication related messages are logged with the AUTHPRIV (or AUTH) facility [intended to be secure, and never seen by unwanted eyes], while normal operational messages are logged with the DAEMON facility. The SyslogFacility directive allows ALL logging messages to be directed to a different facility than the default. When this directive is used, ALL logging is done with the specified facility, both authentication (secure) and otherwise. The facility-level argument must be one of the following: AUTH (or AUTHPRIV), CRON, DAEMON, KERN, LPR, MAIL, NEWS, USER, UUCP, LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6 or LOCAL7. See Also: SystemLog

See also

Examples

SyslogLevel

Name

SyslogLevel -- Set the verbosity level of system logging

Synopsis

SyslogLevel [ SyslogLevel emerg|alert|crit|error|warn|notice|info|debug]

Default

None

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0rc2+cvs and later

Description

SyslogLevel adjusts the verbosity of the messages recorded in the error logs. The following levels are available, in order of decreasing significance: Level Description emerg Emergencies - system is unusable. alert Action must be taken immediately. crit Critical Conditions. error Error conditions. warn Warning conditions. notice Normal but significant condition. info Informational. debug Debug-level messages When a particular level is specified, messages from all other levels of higher significance will be reported as well. E.g., when SyslogLevel info is specified, then messages with log levels of notice and warn will also be posted. Using a level of at least crit is recommended.

See also

Examples

SystemLog

Name

SystemLog -- Redirect syslogging to a file

Synopsis

SystemLog [ SystemLog filename|NONE]

Default

None

Context

server config

Module

mod_log

Compatibility

1.1.6pl1 and later

Description

The SystemLog directive disables proftpd's use of the syslog mechanism and instead redirects all logging output to the specified filename. The filename argument should contain an absolute path, and should not be to a file in a nonexistent directory, in a world-writeable directory, or be a symbolic link (unless AllowLogSymlinks is set to on). Use of this directive overrides any facility set by the SyslogFacility directive. Additionally, the special keyword NONE can be used which disables all syslog style logging for the entire configuration.

Examples

TCPAccessFiles

Name

TCPAccessFiles -- Sets the access files to use

Synopsis

TCPAccessFiles [ allow-filename deny-filename]

Default

none

Context

server config, <VirtualHost>, <Global>, <Anonymous>

Module

mod_wrap

Compatibility

1.2.1 and later

Description

TCPAccessFiles specifies two files, an allow and a deny file, each of which contain the IP addresses, networks or name-based masks to be allowed or denied connections to the server. The files have the same format as the standard tcpwrappers hosts.allow/deny files.

Both file names are required. Also, the paths to both files must be the full path, with two exceptions: if the path starts with ~/, the check of that path will be delayed until a user requests a connection, at which time the path will be resolved to that user's home directory; or if the path starts with ~user/, where user is some system user. In this latter case, mod_wrap will attempt to resolve and verify the given user's home directory on start-up.

The service name for which mod_wrap will look in the indicated access files is proftpd by default; this can be configured via the TCPServiceName directive. There is a built-in precedence to the TCPAccessFiles, TCPGroupAccessFiles, and TCPUserAccessFiles directives, if all are used. mod_wrap will look for applicable TCPUserAccessFiles for the connecting user first. If no applicable TCPUserAccessFiles is found, mod_wrap will search for TCPGroupAccessFiles which pertain to the connecting user. If not found, mod_wrap will then look for the server-wide TCPAccessFiles directive. This allows for access control to be set on a per-server basis, and allow for per-user or per-group access control to be handled without interfering with the server access rules.

Examples

# server-wide access files TCPAccessFiles /etc/ftpd.allow /etc/ftpd.deny # per-user access files, which are to be found in the user's home directory TCPAccessFiles ~/my.allow ~/my.deny

TCPAccessSyslogLevels

Name

TCPAccessSyslogLevels -- Sets the logging levels for mod_wrap

Synopsis

TCPAccessSyslogLevels [ allow-level deny-level]

Default

TCPAccessSyslogLevels info warn

Context

server config, <VirtualHost>, <Global>, <Anonymous>

Module

mod_wrap

Compatibility

1.2.1 and later

Description

ProFTPD can log when a connection is allowed, or denied, as the result of rules in the files specified in TCPAccessFiles, to the Unix syslog mechanism. A discussion on the syslog levels which can be used is given in the SyslogLevel directive.

The allow-level parameter sets the syslog level at which allowed connections are logged; the deny-level parameter sets the syslog level for denied connections.

See also

SyslogLevel

Examples

TCPAccessSyslogLevels debug warn

TCPGroupAccessFiles

Name

TCPGroupAccessFiles -- Sets the access files to use

Synopsis

TCPGroupAccessFiles [ group-expression allow-filename deny-filename]

Default

none

Context

server config, <VirtualHost>, <Global>

Module

mod_wrap

Compatibility

1.2.1 and later

Description

TCPGroupAccessFiles allows for access control files, the same types of files required by TCPAccessFiles, to be applied to select groups. The given group-expression is a logical AND expression, which means that the connecting user must be a member of all the groups listed for this directive to apply. Group names may be negated with a ! prefix.

The rules for the filename paths are the same as for TCPAccessFiles settings.

Examples

# every member of group wheel must connect from restricted locations TCPGroupAccessFiles wheel /etc/ftpd-strict.allow /etc/ftpd-strict.deny # everyone else gets the standard access rules TCPGroupAccessFiles !wheel /etc/hosts.allow /etc/hosts.deny

TCPServiceName

Name

TCPServiceName -- Configures the name proftpd will use with mod_wrap

Synopsis

TCPServiceName [ name]

Default

TCPServiceName proftpd

Context

server config, <VirtualHost>, <Global>

Module

mod_wrap

Compatibility

1.2.1 and later

Description

TCPServiceName is used to configure the name of the service under which mod_wrap will check the allow/deny files. By default, this is the name of the program started, i.e. "proftpd". However, some administrators may want to use a different, more generic service name, such as "ftpd"; use this directive for such needs.

See also

TCPUserAccessFiles

Name

TCPUserAccessFiles -- Sets the access files to use

Synopsis

TCPUserAccessFiles [ user-expression allow-filename deny-filename]

Default

none

Context

server config, <VirtualHost>, <Global>

Module

mod_wrap

Compatibility

1.2.1 and later

Description

TCPUserAccessFiles allows for access control files, the same types of files required by TCPAccessFiles, to be applied to select users. The given user-expression is a logical AND expression. Listing multiple users in a user-expression does not make much sense; however, this type of AND evaluation allows for expressions such as "everyone except this user" with the use of the ! negation prefix.

The rules for the filename paths are the same as for TCPAccessFiles settings.

Examples

# user admin might be allowed to connect from anywhere TCPUserAccessFiles admin /etc/ftpd-anywhere.allow /etc/ftpd-anywhere.deny # while every other user has to connect from LAN addresses TCPUserAccessFiles !admin /etc/ftpd-lan.allow /etc/ftpd-lan.deny

TimeoutIdle

Name

TimeoutIdle -- Sets the idle connection timeout

Synopsis

TimeoutIdle [ TimeoutIdle seconds]

Default

TimeoutIdle 600

Context

server config

Module

mod_core

Compatibility

0.99.0 and later

Description

The TimeoutIdle directive configures the maximum number of seconds that proftpd will allow clients to stay connected without receiving any data on either the control or data connection. If data is received on either connection, the idle timer is reset. Setting TimeoutIdle to 0 disables the idle timer completely (clients can stay connected for ever, without sending data). This is generally a bad idea as a "hung" tcp connection which is never properly disconnected (the remote network may have become disconnected from the Internet, etc) will cause a child server to never exit (at least not for a considerable period of time) until manually killed See Also: TimeoutLogin, TimeoutNoTransfer

See also

Examples

TimeoutLogin

Name

TimeoutLogin -- Sets the login timeout

Synopsis

TimeoutLogin [ TimeoutLogin seconds]

Default

TimeoutLogin 300

Context

server config, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

0.99.0 and later

Description

The TimeoutLogin directive configures the maximum number of seconds a client is allowed to spend authenticating. The login timer is not reset when a client transmits data, and is only removed once a client has transmitted an acceptable USER/PASS command combination. See Also: TimeoutIdle, TimeoutNoTransfer

See also

Examples

TimeoutNoTransfer

Name

TimeoutNoTransfer -- Sets the connection without transfer timeout

Synopsis

TimeoutNoTransfer [ TimeoutNoTransfer seconds]

Default

TimeoutNoTransfer 300

Context

server config, <VirtualHost>, <Global>

Module

mod_xfer

Compatibility

0.99.0 and later

Description

The TimeoutNoTransfer directive configures the maximum number of seconds a client is allowed to spend connected, after authentication, without issuing a command which results in creating an active or passive data connection (i.e. sending/receiving a file, or receiving a directory listing). See Also: TimeoutIdle, TimeoutLogin

See also

Examples

TimeoutSession

Name

TimeoutSession -- Sets a timeout for an entire session

Synopsis

TimeoutSession [ seconds ["user"|"group"|"class" expression]]

Default

None

Context

server config, <VirtualHost>, <Global>, <Anonymous>

Module

mod_auth

Compatibility

1.2.6rc1 and later

Description

The TimeoutSession directive sets the maximum number of seconds a control connection between the proftpd server and an FTP client can exist after the client has successfully authenticated. If the seconds argument is set to 0, sessions are allowed to last indefinitely (the default).

The optional parameters are used to restrict the session time limit only to specific users. If "user" restriction is given, then expression is a user-expression specifying to which users the time limit applies. Similarly for the "group" restriction. For the "class" restriction, the expression is simply the name of connection class for whom the time limit will apply. Note that use of the "user" or "group" classifiers within an <Anonymous> context will not make much sense.

Example: # set a draconian session time limit TimeoutSession 60 # set session time limits for everyone except a few privileged users TimeoutSession 300 user !bob,!dave,!jenni

See also

Examples

# Kick the user off after 60 minutes
TimeoutSession 3600

TimeoutStalled

Name

TimeoutStalled -- Sets the timeout on stalled downloads

Synopsis

TimeoutStalled [ TimeoutStalled seconds]

Default

TimeoutStalled 3600

Context

server config, <VirtualHost>, <Global>

Module

mod_xfer

Compatibility

1.1.6 and later

Description

The TimeoutStalled directive sets the maximum number of seconds a data connection between the proftpd server and an FTP client can exist but have no actual data transferred (i.e. "stalled"). If the seconds argument is set to 0, data transfers are allowed to stall indefinitely.

See also

Examples

TimesGMT

Name

TimesGMT -- Toggle time display between GMT and local

Synopsis

TimesGMT [ TimesGMT on|off]

Default

(versions 1.2.0pre9 and beyond) on

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

Description

Compatibility: 1.2.0pre9 and later The TimesGMT option causes the server to report all ls and MDTM times in GMT and not local time.

See also

Examples

TransferLog

Name

TransferLog -- Specify the path to the transfer log

Synopsis

TransferLog [ TransferLog filename|NONE]

Default

TransferLog /var/log/xferlog

Context

server config, <Anonymous>, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.1.4 and later

Description

The TransferLog directive configures the full path to the "wu-ftpd style" file transfer log. Separate log files can be created for each Anonymous and/or VirtualHost. Additionally, the special keyword NONE can be used, which disables wu-ftpd style transfer logging for the context in which the directive is used (only applicable to version 1.1.7 and later). See Also: ExtendedLog, LogFormat

See also

Examples

TransferRate

Name

TransferRate -- Configure upload, download transfer rates

Synopsis

TransferRate [ cmds] [ kilobytes-per-sec[:free-bytes]] [ ["user"|"group"|"class" expression]]

Default

None

Context

server config, <VirtualHost>, <Global>, <Anonymous>, <Directory>, .ftpaccess

Module

mod_xfer

Compatibility

1.2.8rc1 and later

Description

The TransferRate directive is used to set transfer rates limits on the transfer of data. This directive allows for transfer rates to be set in a wide variety of contexts, on a per-command basis, and for certain subsets of users.

The cmds parameter may be an comma-separated list of any of the following commands: APPE, RETR, STOR, and STOU.

The kilobytes-per-sec parameter is the actual transfer rate to be applied.

The free-bytes parameter, if configured, allows that many bytes to be transferred before the rate controls are applied. This allows for clients transferring small files to be unthrottled, but for larger files, such as MP3s and ISO images, to be throttled.

The optional parameters are used to restrict the application of the rate controls only to specific users. If the "user" restriction is given, then expression is a user-expression specifying to which users the rate applies. Similarly for the "group" restriction. For the "class" restriction, the expression is simply the name of connection class for whom the rate will apply.

Examples

# Limit downloads for everyone except the special group of users TransferRate RETR 1.5 group !special-users

# Limit uploads (and appends!) to the prolific users in the # lotsofuploadfiles.net domain. This presumes that a Class has been defined # for that domain, and that that Class has been named "uploaders". Let them # upload small files without throttling, though. TransferRate APPE,STOR 8.0:1024 class uploaders

Umask

Name

Umask -- Set the default Umask

Synopsis

Umask [ Umask file octal-mask [directory octal-mask]]

Default

None

Context

server config, <Anonymous>, <VirtualHost>, <Directory>, <Global>, .ftpaccess

Module

mod_core

Compatibility

0.99.0 and later

Description

Umask sets the mask applied to newly created file and directory permissions within a given context. By default, the Umask in the server configuration, <VirtualHost> or <Anonymous> block is used, unless overridden by a "per-directory" Umask setting. Any arguments supplied must be an octal number, in the format 0xxx. An optional second argument can specify a Umask to be used when creating directories. If a second argument isn't specified, directories are created using the default Umask in the first argument. For more information on umasks, consult your operating system documentation/man pages.

Proftpd will not create files that have the execution bit turned on, this is a security driven design decision. The permissions of the uploaded file can be changed by issuing a SITE CHMOD command can be used to change the mode of the uploaded file. Syntax of the command is: SITE CHMOD <mode> <file>.

See also

Examples

UseFtpUsers

Name

UseFtpUsers -- Block based on /etc/ftpusers

Synopsis

UseFtpUsers [ UseFtpUsers on|off]

Default

UseFtpUsers on

Context

server config, <Anonymous>, <VirtualHost>, <Global>

Module

mod_auth

Compatibility

0.99.0 and later

Description

Legacy FTP servers generally check a special authorization file (typically /etc/ftpusers) when a client attempts to authenticate. If the user's name is found in this file, FTP access is denied. For compatibility sake, proftpd defaults to checking this file during authentication. This behavior can be suppressed using the UseFtpUsers configuration directive.

See also

Examples

UseGlobbing

Name

UseGlobbing -- Toggles use of glob() functionality

Synopsis

UseGlobbing [ on|off]

Default

UseGlobbing on

Context

server config, <VirtualHost>, <Global>, <Anonymous>

Module

mod_ls

Compatibility

1.2.5rc1 and later

Description

The UseGlobbing directive controls use of glob() functionality, which is needed for supporting wildcard characters such as *.

See also

UseReverseDNS

Name

UseReverseDNS -- Toggle rDNS lookups

Synopsis

UseReverseDNS [ UseReverseDNS on|off]

Default

UseReverseDNS on

Context

server config

Module

mod_core

Compatibility

1.1.7 and later

Description

Normally, incoming active mode data connections and outgoing passive mode data connections have a reverse DNS lookup performed on the remote host's IP address. In a chroot environment (such as <Anonymous> or DefaultRoot), the /etc/hosts file cannot be checked and the only possible resolution is via DNS. If for some reason, DNS is not available or improperly configured this can result in proftpd blocking ("stalling") until the libc resolver code times out. Disabling this directive prevents proftpd from attempting to reverse-lookup data connection IP addresses.

See also

Examples

User

Name

User -- Set the user the daemon will run as

Synopsis

User [ User userid]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

0.99.0 and later

Description

The User directive configures which user the proftpd daemon will normally run as. By default, proftpd runs as root which is considered undesirable in all but the most trustful network configurations. The User directive used in conjunction with the Group directive instructs the daemon to switch to the specified user and group as quickly as possible after startup. On some unix variants, the daemon will occasionally switch back to root in order to accomplish a task which requires super-user access. Once the task is completed, root privileges are relinquished and the server continues to run as the specified user and group. When applied to a <VirtualServer> block, proftpd will run as the specified user/group on connections destined for the virtual server's address or port. If either User or Group is applied to an <Anonymous> block, proftpd will establish an anonymous login when a user attempts to login with the specified userid, as well as permanently switching to the corresponding uid/gid (matching the User/Group parameters found in the anonymous block) after login. Note: When an authorized unix user is authenticated and logs in, all former privileges are released, the daemon switches permanently to the logged in user's uid/gid, and is never again capable of switching back to root or any other user/group.

See also

Examples

UserAlias

Name

UserAlias -- Alias a username to a system user

Synopsis

UserAlias [ UserAlias login-user userid]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

0.99.0 and later

Description

ProFTPD requires a real username/uid when authenticating users as provided by PAM, AuthUserFile or another authentication mechanism. There are however times when additional aliases are required but it is undesirable to provide additional login accounts.

UserAlias provides a mechanism to do this, a typical and common example is within Anonymous configuration blocks. It is normal for the server to use 'ftp' as the primary authentication user, however it is common practice for users to login using "anonymous". This is achieved by adding the following to the config file.

See also

Examples

UserAlias anonymous ftp

UserDirRoot

Name

UserDirRoot -- Set the chroot directory to a subdirectory of the anonymous server

Synopsis

UserDirRoot [ UserDirRoot on|off]

Default

off

Context

<Anonymous>

Module

mod_auth

Compatibility

1.2.0pre2 and later

Description

When set to true, the chroot base directory becomes a subdirectory of the anonymous ftp directory, based on the username of the current user. For example, assuming user "foo" is aliased to "ftp", logging in as "foo" causes proftpd to run as real user ftp, but to chroot into ~ftp/foo instead of just ~ftp.

See also

Examples

UserOwner

Name

UserOwner -- Set the user ownership of new files / directories

Synopsis

UserOwner [ UserOwner username]

Default

None

Context

<Anonymous>, <Directory>

Module

mod_core

Compatibility

1.2pre11 and later

Description

The UserOwner directive configures which user all newly created directories and files will be owned by, within the context that UserOwner is applied to. The user ID of username cannot be 0 (root). Where it is used, the GroupOwner directive is not restricted to groups that the current user is a member of.

See also

Examples

UserPassword

Name

UserPassword -- Creates a hardcoded username/password pair

Synopsis

UserPassword [ UserPassword userid hashed-password]

Default

None

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_auth

Compatibility

0.99.0pl5 and later

Description

The UserPassword directive creates a password for a particular user which overrides the user's normal password in /etc/passwd (or /etc/shadow). The override is only effective inside the context to which UserPassword is applied. The hashed-password argument is a cleartext string which has been passed through the standard unix crypt() function. Do NOT use a cleartext password. This can be useful when combined with UserAlias to provide multiple logins to an Anonymous FTP site. See Also: GroupPassword

See also

Examples

UserRatio

Name

UserRatio -- Ratio directive

Synopsis

UserRatio [ UserRatio foo1 foo2 foo3]

Default

None known

Context

<Directory>, <Anonymous>, <Limit>,.ftpaccess

Module

mod_ratio

Compatibility

at least 1.2.0 and later

Description

The UserRatio directive .... Example: UserRatio

See also

Examples

VirtualHost

Name

VirtualHost -- Define a virtual ftp server

Synopsis

VirtualHost [ <VirtualHost address>]

Default

None

Context

server config

Module

mod_core

Compatibility

0.99.0 and later

Description

The VirtualHost configuration block is used to create an independent set of configuration directives that apply to a particular hostname or IP address. It is often used in conjunction with system level IP aliasing or dummy network interfaces in order to establish one or more "virtual" servers which all run on the same physical machine. The block is terminated with a </VirtualHost> directive. By utilizing the Port directive inside a VirtualHost block, it is possible to create a virtual server which uses the same address as the master server, but listens on a separate tcp port (incompatible with ServerType inetd). When proftpd starts, virtual server connections are handled in one of two ways, depending on the ServerType setting: inetd The daemon examines the destination address and port of the incoming connection handed off from inetd. If the connection matches one of the configured virtual hosts, the connection is serviced based on the appropriate configuration. If no virtual host matches, and the main server does not match, the client is informed that no server is available to service their requests and disconnected. standalone After parsing the configuration file, the daemon begins listening for connections on all configured ports, spawning child processes as necessary to handle connections for either the main server or any virtual servers. Because of the method that the daemon uses to listen for connections when in standalone mode, it is possible to support an exceedingly large number of virtual servers, potentially exceeding the number of per-process file descriptors. This is due to the fact that a single file descriptor is used to listen to each configured port, regardless of the number of addresses being monitored. Note that it may be necessary to increase the tcpBackLog value on heavily loaded servers in order to avoid kernel rejected client connections ("Connection refused").

See also

Examples

WtmpLog

Name

WtmpLog -- Toggle logging to wtmp

Synopsis

WtmpLog [ WtmpLog on|off|NONE]

Default

WtmpLog on

Context

server config, <VirtualHost>, <Anonymous>, <Global>

Module

mod_core

Compatibility

1.1.7 and later

Description

The WtmpLog directive controls proftpd's logging of ftp connections to the host system's wtmp file (used by such commands as `last'). By default, all connections are logged via wtmp. Please report any corrections or additions via http://bugs.proftpd.net/

See also

Examples

tcpBackLog

Name

tcpBackLog -- Control the tcp backlog in standalone mode

Synopsis

tcpBackLog [ tcpBackLog backlog-size]

Default

tcpBackLog 5

Context

server config

Module

mod_core

Compatibility

0.99.0 and later

Description

The tcpBackLog directive controls the tcp "backlog queue" when listening for connections in standalone mode (see ServerType). It has no affect upon servers in inetd mode. When a tcp connection is established by the tcp/ip stack inside the kernel, there is a short period of time between the actual establishment of the connection and the acceptance of the connection by a user-space program. The duration of this latency period is widely variable, and can depend upon several factors (hardware, system load, etc). During this period tcp connections cannot be accepted, as the port that was previously "listening" has become filled with the new connection. Under heavy connection load this can result in occasional (or even frequent!) "connection refused" messages returned to the incoming client, even when there is a service available to handle requests. To eliminate this problem, most modern tcp/ip stacks implement a "backlog queue" which is simply a pre-allocation of resources necessary to handle backlog-size connections during the latency period. The larger the backlog queue, the more connections can be established in a very short time period. The trade-off, of course, is kernel memory and/or other kernel resources. Generally it is not necessary to use a tcpBackLog directive, unless you intend to service a large number of virtual hosts (see <VirtualHost>), or have a consistently heavy system load. If you begin to notice or hear of "connection refused" messages from remote clients, try setting a slightly higher value to this directive.

See also

Examples

tcpNoDelay

Name

tcpNoDelay -- Control the use of TCP_NODELAY

Synopsis

tcpNoDelay [ tcpNoDelay on|off]

Default

tcpNoDelay on

Context

server config, <VirtualHost>, <Global>

Module

mod_core

Compatibility

1.2.0pre3a and later

Description

The tcpNoDelay directive controls the use of the TCP_NODELAY socket option (which disables the Nagle algorithm). ProFTPd uses TCP_NODELAY by default, which usually is a benefit but this can occasionally lead to problems with some clients, so tcpNoDelay is provided as a way to disable this option. You will not normally need to use this directive but if you have clients reporting unusually slow connections, try setting this to off.

See also

Examples

tcpReceiveWindow

Name

tcpReceiveWindow -- Set the size of the tcp receive window

Synopsis

tcpReceiveWindow [ tcpReceiveWindow window-size]

Default

tcpReceiveWindow 8192

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

0.99.0 and later

Description

The tcpReceiveWindow directive configures the size (in octets) of all data connections' tcp receive windows. It is only used when receiving a file from a client over the data connection. Typically, a given tcp/ip implementation will use a relatively small receive window size (the number of octets that can be received at the tcp layer before a "turnaround" acknowledgement is required). When transferring a large amount of data over fast digital transmission lines which have a relatively high latency, a small receive window can dramatically affect perceived throughput because of the necessity to completely stop the transfer occasionally in order to wait for the remote endpoint to receive the acknowledgement and continue transmission. For example, on a T1 line (assuming full 1.544Mbps endpoint-to-endpoint throughput) with 100 ms latency, a 4k receive buffer will very dramatically reduce the perceived throughput. The default value of 8192 octets (8k) should be reasonable in common network configurations. Additionally, proftpd allocates its internal buffers to match the receive/send window sizes; in order to maximize the reception/transmission performance (reducing the number of times data must be transfered from proftpd to the kernel tcp/ip stack). The tradeoff, of course, is memory; both kernel- and user-space. If running proftpd on a memory tight host (and on a low-bandwidth connection), it might be advisable to decrease both the tcpReceiveWindow and tcpSendWindow sizes.

See also

Examples

tcpSendWindow

Name

tcpSendWindow -- Set the size of the tcp send window

Synopsis

tcpSendWindow [ tcpSendWindow window-size]

Default

tcpSendWindow 8192

Context

server config, <VirtualHost>

Module

mod_core

Compatibility

0.99.0 and later

Description

The tcpSendWindow directive configures the size (in octets) of all data connections' tcp send windows. It is only used when sending a file from the server to a client on the data connection. For a detailed description of receive/send window sizes see tcpReceiveWindow.

See also

Examples


Chapter 2. List of modules

mod_auth

Name

mod_auth -- Authentication module

Synopsis

mod_auth

Description

FIXME FIXME FIXME

CapabilitiesEngineCapabilitiesSet

mod_core

Name

mod_core -- Core module

Synopsis

mod_core

Description

This module provides all the core functionality ProFTPD needs to function, this module must be compiled in.

mod_ldap

Name

mod_ldap -- LDAP authentication support

Synopsis

mod_ldap

Description

mod_ldap provides LDAP authentication support for ProFTPD. It supports many features useful in "toaster" environments such as default UID/GID and autocreation/autogeneration of home directories.

mod_log

Name

mod_log -- Logging support

Synopsis

mod_log

Description

Logging support, including enhanced formatting options.

mod_ls

Name

mod_ls -- file listing functionality

Synopsis

mod_ls

Description

FIXME FIXME FIXME

mod_pam

Name

mod_pam -- Pluggable authentication modules support

Synopsis

mod_pam

Description

FIXME FIXME FIXME

mod_radius

Name

mod_radius -- RADIUS based authentication support

Synopsis

mod_radius

Description

This module provides RADIUS authentication and accounting support.

Strong authentication is in demand for Internet services. For many, this means using the RADIUS (Remote Authentication Dial-In User Service) protocol.

However, there are caveats to using RADIUS for authentication. RADIUS packets are sent in the clear, which means that they can easily be sniffed. First, do not have your authenticating RADIUS servers exposed to the Internet; keep them protected within your LAN. Second, it is highly recommended to use separate RADIUS servers for each of your services.

RADIUS Authentication

The RADIUS protocol can be used for answering the question "Should this user be allowed to login?" However, the "yes/no" answer is not everything that proftpd needs to log a user in; the server also requires the UID and GID to use for the authenticated user, home directory, and shell. This information is usually not available from the RADIUS servers, which means that using RADIUS to provide all the necessary login information can be problematic. The RadiusUserInfo directive is meant to be used to address this issue, to provide the missing information.

In those cases where the RADIUS servers can provide that additional login information, via custom attributes, the RadiusUserInfo directive can also be used obtain that information as well.

RADIUS Accounting

While RADIUS is primarily used for authentication, the protocol also allows for accounting of user activities. The mod_radius module makes use of this ability, using RADIUS accounting packets to transmit the following data:

* Acct-Authentic: How the user was authenticated (e.g. locally, or via RADIUS) * Acct-Session-Id: The process ID of the FTP session * Acct-Session-Time: The duration of the FTP session, in seconds * Acct-Input-Octets: The number of bytes uploaded (includes appending to files) * Acct-Output-Octets: The number of bytes downloaded Merely configuring a RadiusAcctServer enables the module's accounting capabilities. Common Attributes The following RADIUS attributes are sent with every RADIUS packet generated by mod_radius: * User-Name: The name of the logging-in user * NAS-Identifier: Always "ftp" * NAS-IP-Address: IP address of FTP server * NAS-Port: Port of FTP server * NAS-Port-Type: Always Virtual. * Calling-Station-Id: IP address of connecting FTP client

mod_ratio

Name

mod_ratio -- FIX ME FIX ME

Synopsis

mod_ratio

Description

FIXME FIXME FIXME

mod_readme

Name

mod_readme -- "README" file support

Synopsis

mod_readme

Description

FIXME FIXME FIXME

See also

DisplayReadme

mod_sample

Name

mod_sample -- Example module

Synopsis

mod_sample

Description

This module only provides an example set of code as a template for a budding module programmer.

mod_site

Name

mod_site -- FIX ME FIX ME

Synopsis

mod_site

Description

FIXME FIXME FIXME

See also

AllowChmod

mod_sql

Name

mod_sql -- SQL support module

Synopsis

mod_sql

Description

This module provides the necessary support for SQL based authentication, logging and other features as required. It replaces the SQL modules which were shipped with 1.2.0rc2 and earlier.

mod_unixpw

Name

mod_unixpw -- UNIX style authentication methods

Synopsis

mod_unixpw

Description

This module supports the password file (/etc/passwd) style of authentication methods.

mod_wrap

Name

mod_wrap -- Interface to libwrap

Synopsis

mod_wrap

Description

It enables the daemon to use the common tcpwrappers access control library while in standalone mode, and in a very configurable manner. It is not compiled by default.

If not installed on your system, the TCP wrappers library, required by this module, can be found here, on Wietse Venema's site. Once installed, it highly recommended that the hosts_access(3) and hosts_access(5) man pages be read and understood.

Many programs will automatically add entries in the common allow/deny files, and use of this module will allow a ProFTPD daemon running in standalone mode to adapt as these entries are added. The portsentry program does this, for example: when illegal access is attempted, it will add hosts to the /etc/hosts.deny file.

mod_xfer

Name

mod_xfer -- FIX ME FIX ME

Synopsis

mod_xfer

Description

FIXME FIXME FIXME


Chapter 3. List of configuration contexts

server config

Name

server config -- server config

Synopsis

server config

Description

FIXME FIXME FIXME

See also

Global

Name

Global -- Global

Synopsis

Global

Description

FIXME FIXME FIXME

See also

VirtualHost

Name

VirtualHost -- VirtualHost

Synopsis

VirtualHost

Description

FIXME FIXME FIXME

See also

Anonymous

Name

Anonymous -- Anonymous

Synopsis

Anonymous

Description

FIXME FIXME FIXME

See also

AccessDenyMsg AccessGrantMsg AllowAll AllowChmod AllowFilter AllowForeignAddress AllowOverride AllowOverwrite AllowRetrieveRestart AllowStoreRestart AnonRatio AnonRequirePassword AuthAliasOnly AuthUsingAlias ByteRatioErrMsg CDPath CwdRatioMsg DefaultChdir DeleteAbortedStores DenyAll DenyFilter DirFakeGroup DirFakeMode DirFakeUser Directory DisplayFirstChdir DisplayGoAway DisplayLogin DisplayQuit DisplayReadme ExtendedLog FileRatioErrMsg FooBarDirective Group GroupOwner GroupPassword GroupRatio HiddenStor HiddenStores HideGroup HideNoAccess HideUser HostRatio Include LDAPHomedirOnDemandPrefixNoUsername LeechRatioMsg Limit ListOptions LoginPasswordPrompt LsDefaultOptions MaxClients MaxClientsPerHost MaxClientsPerUser MaxHostsPerUser MaxRetrieveFileSize MaxStoreFileSize PathAllowFilter PathDenyFilter RateReadBPS RateReadFreeBytes RateReadHardBPS RateWriteBPS RateWriteFreeBytes RateWriteHardBPS RatioFile RatioTempFile Ratios RequireValidShell RootLogin SQLAuthenticate SQLAuthoritative SQLDefaultHomedir SQLGidField SQLGroupGIDField SQLGroupInfo SQLGroupWhereClause SQLHomedir SQLHomedirField SQLLog SQLLogDirs SQLLogHits SQLLogHosts SQLLogStats SQLLoginCountField SQLMinUserGID SQLMinUserUID SQLNamedQuery SQLPasswordField SQLProcessGrEnt SQLProcessPwEnt SQLShowInfo SQLUidField SQLUserInfo SQLUserTable SQLUserWhereClause SQLUsernameField SaveRatios ShowDotFiles ShowSymlinks StoreUniquePrefix TCPAccessFiles TCPAccessSyslogLevels TimeoutSession TimesGMT TransferLog TransferRate Umask UseFtpUsers UseGlobbing User UserAlias UserDirRoot UserOwner UserPassword UserRatio WtmpLog

Limit

Name

Limit -- Limit

Synopsis

Limit

Description

FIXME FIXME FIXME

.ftpaccess

Name

.ftpaccess -- .ftpaccess

Synopsis

.ftpaccess

Description

FIXME FIXME FIXME