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University Central Authentication Service (CAS) for web-based applications

OIT is proud to announce the launch of CAS (Central Authentication Service) -- a single sign-on authentication mechanism for Princeton web administrators to easily create login capabilities to their sites.

CAS authenticates using a Princeton University netID and password, and if an online site or application is CAS-enabled, you are guaranteed that your credentials are not being collected or gathered for malicious reasons. Online sites will automatically re-direct you to the CAS web page to enter your credentials, or you can navigate to the CAS login page by going to

The number of CAS-enabled applications continues to increase. Sites like Point and the Outdoor Action TripStore are CAS-enabled as well as Princeton University vendor-hosted services like the Princeton Marketplace and the Employee Learning Center.

Watch for the "green" markers in your browser's location field. See for more information about CAS and how to identify a safe site.