ProFTPD 1.3 README.modules
                        ==========================


Core ProFTPD Modules (modules subdirectory)
-------------------------------------------

Modules always included:

    mod_auth
        Implements FTP authentication commands (USER, PASS, ACCT, REIN).

    mod_core
        Implements core configuration directives and most RFC-959 FTP
        commands (CWD, CDUP, MKD, PWD, RMD, DELE, RNTO, RNFR, PASV, PORT,
        SYST, HELP, QUIT, NOOP), and the MDTM and SIZE extensions.

    mod_delay
        Implements algorithms to protect against information leaks
        via timing attacks.

    mod_log
        Interface to Unix message logging (syslog or file).

    mod_ls
        Implements the FTP LIST, NLST and STAT commands.

    mod_facts
        Implements the FTP MFF, MFMT, MLSD, and MLST commands.

    mod_site
        Implements the FTP SITE command, and the HELP, CHGRP, CHMOD
        subcommands.

    mod_auth_file
        Interface to file-based authentication (AuthUserFile, AuthGroupFile)

    mod_auth_unix
        Interface to the native Unix password system.

    mod_xfer
        Implements FTP file transfer commands (STOR, RETR, APPE, REST,
        ABOR, TYPE, STRU, MODE, ALLO, SMNT, STOU).

    mod_ident
        Implements RFC1413 identity lookups (IdentLookups).

Modules automatically included when supported by the OS:

    mod_auth_pam
        PAM (Pluggable Authentication Modules) authentication.
        See README.PAM.
        Originally contributed by MacGyver <macgyver@tos.net>.

    mod_cap, libcap
        POSIX 1e (IEEE 1003.1e draft) security model enhancements
        (capabilities and capability sets), available for Linux kernels
        2.1.104 and later. See README.capabilities.


Modules included upon request:

    mod_ctrls
        Provides the server-side listener for control requests
        (see README.controls)

    mod_dso
        Handles loading and unloading of DSO modules (see README.DSO)

    mod_facl
        Handles checking of POSIX ACLs (see README.facl)

    mod_lang
        Handles the LANG command (see README.NLS)

    mod_memcache
        Handles Memcache support

Contributed ProFTPD Modules (contrib/ subdirectory)
--------------------------------------------------

Also, see contrib/README.

Security/encryption modules:

    mod_sftp, mod_sftp_pam, mod_sftp_sql
        SSH2, SFTP, SCP protocol implementation
        See doc/contrib/mod_sftp.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_tls, mod_tls_memcache, mod_tls_shmcache
        SSL/TLS authentication/encryption
        See doc/contrib/mod_tls.html
        Originally by Peter Runestig
        Contributed by TJ Saunders <tj@castaglia.org>

Authentication modules:

    mod_ldap
        LDAP (Light-weight Directory Access Protocol) authentication.
        See README.LDAP.
        Contributed by John Morrissey <jwm@horde.net>.

    mod_sql, mod_sql_mysql, mod_sql_postgres, mod_sql_odbc, mod_sql_sqlite
        SQL (Structured Query Language) database authentication and
        other functions, with backends for MySQL, PostgreSQL, ODBC, and SQLite.
        See doc/contrib/mod_sql.html
        Contributed by Johnie Ingram <johnie@netgod.net>.

    mod_radius
       RADIUS (RFC2865) authentication and accounting
       See doc/contrib/mod_radius.html
       Contributed by TJ Saunders <tj@castaglia.org>.

Feature modules:

    mod_ban
        Dynamic blacklisting.
        See doc/contrib/mod_ban.html
        Contributed by TJ Saunders <tj@castaglia.org>.

    mod_ctrls_admin
        Common administrative control actions
        See doc/contrib/mod_ctrls_admin.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_dynmasq
        Automatic refreshing of IP address for MasqueradeAddress DNS name,
        for sites that use DynDNS-type services
        See doc/contrib/mod_dynmasq.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_exec
        Execute custom external scripts based on session actions/events.
        See doc/contrib/mod_exec.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_geoip
        Look up geographic information based on the client IP address.
        See doc/contrib/mod_geoip.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_ifsession
        Conditional per-user, per-group, per-class configurations
        See doc/contrib/mod_ifsession.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_load
        Reject connections based on system load
        See doc/contrib/mod_load.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_log_forensic
        Only write log information when criteria are met.
        See doc/contrib/mod_log_forensic.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_qos
        Tweak the network TCP QoS bits for better routing
        See doc/contrib/mod_qos.html
        Contributed by Philip Prindeville

    mod_quotatab, mod_quotatab_file, mod_quotatab_ldap, mod_quotatab_radius,
      mod_quotatab_sql
        User/group/class quotas.
        See doc/contrib/mod_quotatab.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_ratio
        User upload/download ratios.
        See contrib/README.ratio and the comments in mod_ratio.c.
        Contributed by Johnie Ingram <johnie@netgod.net>
        and Jim Dogopoulos <jd@dynw.com>/<jd@downcity.net>.

    mod_readme
        Display "readme" files, controlled by the "DisplayReadme" directive.
        Originally contributed by <jan.menzel@gmx.de>.

    mod_rewrite
        Powerful regular expression-based command parameter rewrite engine
        See doc/contrib/mod_rewrite.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_shaper
        Throttling of data transfers across the entire server.
        See doc/contrib/mod_shaper.html
 
    mod_site_misc
        Miscellaneous SITE commands (e.g. SITE SYLINK, SITE UTIME)
        See doc/contrib/mod_site_misc.html

    mod_unique_id
        Provides a unique ID for each FTP session, useful for session
        tracking in log files and databases
        See doc/contrib/mod_unique_id.html
        Contributed by TJ Saunders <tj@castaglia.org>

    mod_wrap
        TCP Wrappers.
        See contrib/README.mod_wrap and doc/contrib/mod_wrap.html.
        Contributed by TJ Saunders <tj@castaglia.org>.

    mod_wrap2, mod_wrap2_file, mod_wrap2_sql
        TCP wrappers functionality, extended to include SQL tables
        See doc/contrib/mod_wrap2.html
        Contributed by TJ Saunders <tj@castaglia.org>.


Other ProFTPD modules (not included in the source distribution)
---------------------------------------------------------------

Please see

    http://www.proftpd.org/module_news.html

for a current third-party module list. These modules (and patches) are
neither evaluated nor sanctioned in any way.