LDAP: Integration with enterprise authentication systems

This LDAP integration module allows users to authenticate against a configurable Lightweight Directory Access Protocol directory. This is useful for organizations which have an existing organizational directory with usernames and passwords, and want Drupal to be able to authenticate against it.

Users can read and modify their LDAP entries, and the administrator is able to limit configuration.

LDAP Integration Module in reality, is a set of three modules:

Authentication (ldapauth.module)

Required module. It implements basic LDAP integration and sets up the environment for the other optional modules.

Groups (ldapgroups.module)

Optional. Extends the basic functionality and integrates LDAP Groups into Drupal Roles.

Data (ldapdata.module)

Optional. Extends the basic functionality and allows for the management of LDAP Attributes from within Drupal.
Requires profile module to be installed.