You can use IBM Rational Directory Server to authenticate users and manage user information.

Rational Directory Server can interact with an existing corporate LDAP server, as a stand-alone solution, or in the Operating System mode with operating system users. Rational Directory Server supports Single Sign-On between supported Rational applications.

When you log in to Focal Point^®, it is registered with Rational Directory Server. Registration gives Rational Directory Server access to Focal Point^® website and its web services API. You can then create and store relationships in Rational Directory Server for the objects in Focal Point^® and supported Rational applications. When Focal Point^® is closed, it is unregistered in the Rational Directory Server.