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author Kim Alvefur <zash@zash.se>
date Fri, 28 Aug 2015 18:03:58 +0200
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---
labels:
- 'Stage-Alpha'
- 'Type-Auth'
summary: LDAP authentication module
...

***Note:** A modified version of this module is available, but is not
yet committed here. The plan is to merge them, for more info see [this
thread](http://groups.google.com/group/prosody-dev/browse_thread/thread/282e876116ae4177/906121492495ad35#906121492495ad35).*

Introduction
============

This is a Prosody authentication plugin which uses LDAP as the backend.

Dependecies
===========

This module depends on [LuaLDAP](http://www.keplerproject.org/lualdap/)
for connecting to an LDAP server.

Configuration
=============

Copy the module to the prosody modules/plugins directory.

In Prosody's configuration file, under the desired host section, add:

        authentication = "ldap"
        ldap_base = "ou=people,dc=example,dc=com"

LDAP options are:

  Name             Description                                                                                                            Default value
  ---------------- ---------------------------------------------------------------------------------------------------------------------- ------------------
  ldap\_server     Space-separated list of hostnames or IPs, optionally with port numbers (e.g. "localhost:8389")                         "localhost"
  ldap\_rootdn     The distinguished name to auth against                                                                                 "" (anonymous)
  ldap\_password   Password for rootdn                                                                                                    ""
  ldap\_filter     Search filter, with \$user and $host substituded for user- and hostname | "(uid=$user)"                                
  ldap\_scope      Search scope. other values: "base" and "subtree"                                                                       "onelevel"
  ldap\_tls        Enable TLS (StartTLS) to connect to LDAP (can be true or false). The non-standard 'LDAPS' protocol is not supported.   false
  ldap\_base       LDAP base directory which stores user accounts                                                                         This is required
  ldap\_mode       How passwords are validated.                                                                                           "bind"

**Note:** lua-ldap reads from /etc/ldap/ldap.conf and other files like
\~prosody/.ldaprc if they exist. Users wanting to use a particular TLS
root certificate can specify it in the normal way using TLS\_CACERT in
the OpenLDAP config file.

Modes
=====

The "getpasswd" mode requires plain text access to passwords in LDAP and
feeds them into Prosodys authentication system. This enables more secure
authentication mechanisms but does not work for all deployments.

The "bind" performs an LDAP bind, does not require plain text access to
passwords but limits you to the PLAIN authentication mechanism.

Compatibility
=============

  --------------- -------------
  0.8 and above   should work
  --------------- -------------