The Raven-related software described on this page is NOT supported or maintained by University Information Services.
It is provided here in the hope that it may be useful, but it may contain bugs and security vulnerabilities. It may be supported and maintained by others. You should evaluate whether it meets you particular needs before using it.
CARET (the Centre for Applied Research in Educational Technologies) have a Tomcat authenticator and partial JAAS implementation available at http://forge.caret.cam.ac.uk/projects/raven/.
See also Java Toolkit, Tomcat Valve, Servlet filter, and JAVA Servlet Library.