New CAS Clients and Documentation

New CAS clients supporting CAS single sign out have been posted to the CAS Clients page. The new clients are:
- CAS ISAPI Client
  A beta version of the new client has been posted. This new client adds:
  - Support for the CAS single sign out protocol.
  - Additional configuration parameters, including setting of the authentication header variable.
- CAS Cold Fusion Clients
  A new Cold Fusion CAS client has been written from scratch. This new module fully implements the base CAS client protocol and supports CAS single sign out. There are two versions of the new module:
  - cas_auth_dbcache: This module uses a database table to store authentication credentials and is designed for clustered applications.
  - cas_auth_filecache: This module uses the filesystem to store authentication credentials and is designed for single-server installations.
- mod_auth_cas
  - We have submitted a patch enabling single sign out for mod_auth_cas and are waiting for a response from the mod_auth_cas developer group. The patch applies to the trunk of mod_auth_cas. If you are interested in adding single sign out to your mod_auth_cas installation, please email distauth-devel@ucdavis.edu and request the single sign out patch.
Documentation on the CAS Single Sign Out protocol has been added
This page describes the features and processes of the CAS single sign out protocol, provides instructions on upgrading clients to support single sign out, and explores the pitfalls encountered when enabling single sign out.