UAB Central Authentication Service (CAS 3.0)
The CAS protocol face of the same server. https://sso.uab.cat/ redirects to /cas/login and the ticket-validation endpoint at /cas/p3/serviceValidate returns a well-formed cas:serviceResponse — an INVALID_TICKET authenticationFailure for a deliberately bad ticket, which evidences a live protocol endpoint and grants nothing. It is the authentication boundary for UAB's own applications, including the virtual campus at cv.uab.cat. Service registration is administrative; there is no self-service developer path and no published contract.