CAS handles the web login to the pipeline configuration pages.
From Matt:
The upgrade of CAS to Tomcat seems to have gone without a hitch. Pipeline Front End and System Tests should not notice any difference. Please let me know id you notice any problems.
For reference (and CCB purposes?) the new CAS server is tagged in CVS as v1r0p3, and is running on glast05 under Tomcat 5.5.9.