SSO without CAS ?

[ambeth]

I was doing a little research on single-sign on, and was reading some of the CAS articles / tutorials when I came across this:

http://www.ja-sig.org/wiki/display/CASUM/Demo

I am focussing on multi-domain because, if you have just one single tomcat instance in which you have all your applications, and would like to do SSO, you really don't need CAS at all (it would be overkill)

Soooo... is there a simple way to implement SSO on a single tomcat instance?

[Scott Battaglia]

CAS is not overkill for one, or multiple, Tomcats, domains, etc. I believe the person was referring to the fact that if you are only running one Tomcat, you may wish to look into Tomcat's SSO support, which may or may not be sufficient.