Central Authentication Service (CAS) is both an authentication mechanism as well as an enterprise single sign-on server for web applications. Applications that utilize CAS participate in the same single sign-on session, meaning that once a user successfully authenticates with CAS, he or she won't be prompted again for the duration of the session. In addition, CAS allows a web application to see who authenticated, but protects the user's password from individual applications, allowing for a much more secure computing environment.
CAS provides an enterprise single sign-on service:
An open and well-documented protocol
An open-source Java server component
A library of clients for Java, .Net, PHP, Perl, Apache, uPortal, and others
Integrates with uPortal, BlueSocket, TikiWiki, Mule, Liferay, Moodle and others
A community documentation and implementation support
An extensive community of adopters
To get started, click the "Service Registry/Duo" button above the Support Center and complete the request.