Originally Posted by Frick
I did that with an old Pentium 2 system and it was slow as *insert curse word*. Did it with Freesco I think it was, or possibly Smoothwall.
A P4 has a little more power than a P2 and supports more and faster memory.
Either way gateways don't need a whole lot of power. I bet the P2 could handle better if it was a bare *nix install but that doesn't give you the ease-of-use that some of these other solutions offer unless you're one of those people who consider updating DHCP, BIND, and networking through the CLI easy.