docrice wrote: » To be honest, when I was studying for the CCNA Security I didn't get a lot of coverage on ACS, although I recall some references about RADIUS and TACACS+. I've used ACS to a minor degree for years now (although primarily for RADIUS), but from my impression when reading through Catherine Paquet's book it doesn't really dig deep into the subject. I think you're better off with the linked configuration guide.