I have a working mod_auth_cas setup on my server but I would like to use the "require cas-attribute" to validate users with something else than their user name but I don't know how to do it. I tried a couple of things like that: <Directory "/some/directory"> AuthType CAS require cas-attribute tamuEduPersonNetID myownnetid </Directory> But no success. The university provides this technical information: Successful validation CAS returns an XML document containing: <cas:serviceResponse xmlns:cas='https://www.yale.edu/tp/cas'> <cas:authenticationSuccess> <cas:user>netid</cas:user> <cas:attributes> <cas:tamuEduPersonUIN>#########</cas:tamuEduPersonUIN> <cas:tamuEduPersonNetID>netid</cas:tamuEduPersonNetID> </cas:attributes> </cas:authenticationSuccess> </cas:serviceResponse> I am pretty sure the key to make it work is there but I have no idea how to do it. Any advice?