Hello! I am deploying Nuxeo for the first time and also this is first time I am setting up SSO which is jasig CAS server. I have downloaded the plugin, configured the descriptor and auth chain. Now is the question: should the LDAP or SQL directory be configured in the Nuxeo, to allow the system check the user permissions. I.e.: how can I login with the admin credentials if I am constantly redirected to CAS page?