CAS Authentication with built-in LDAP support The cas_auth plugin provides single signon capabilities for Elgg using JA-SIG CAS (Central Authentication System).  This module includes LDAP functionality to automatically create users within Elgg without having to configure an additional plugin.  It also features a configuration setting to automatically assign admin privileges to a specific CAS user.

Please note that this module is no longer maintained, and has not been tested with Elgg 1.7.x