# LDAP Group User Authentication

The LDAP Group User Authentication module extends the full featured LDAP Authentication module and provides additional group information to the EMS server. This module validates all connections (users, routes, and so on) by authenticating to the LDAP server using the supplied credentials, and then updates the EMS server with any related group information found.

If caching is enabled, changes to group membership in the LDAP server are not reflected in EMS until the user's entry in the cache has expired.

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