I've been looking on the net for things like that, well more particularly information on how to do it myself, but have found not a lot.
I've resorted to using my own system using a database for the username and passwords. When a user successfully logs in, then i set a property in the session object specifying that they are logged in.
It may not be the best way of doing it, and i'd love to have some more examples of how people have done this?
Hope it helps anyway.
How have other people added security to their sites?