What is the best login/acl generator?

any best / easy ones?

I’m not sure if it’s “best” but I followed the tutorial here and so far
I’m
happy with it:
http://www.aidanf.net/rails_user_authentication_tutorial

This thread is long dead, but in case anyone ever finds it again i’ve
written one for CISCO routers at:
http://www.vaines.org/index.php/acl-generator.html

It is my degree project, so if anyone ever uses it, would they mind
emailing me an letting me know what they think.