Firewall Simulators

I need to learn more about firewalls (any commonly used brand (PIX, Sidewinder, etc))

My question: How the hell do I learn about it without having the software? I realize a book would help, but I'm a hands-on kind of person, so a book might not be enough.

Are there any simulators out there?

I don't know, honestly.

you can always practice on open-source firewalls like PF and IPF... build yourself a little firewalling OpenBSD box.

there might be PIX simulators out there since there are router simulators...

never heard of sims for Checkpoint, Sidewinder, and Netscreen, though.

Go download a copy of Astaro.