Dual PPro 200, 128MB RAM, 10GB If I make too many config changes, or work in busy areas of WebAdmin (IPS rules) it gets a little slow. Other than that it runs fine. Network speed is great for the 3M/256k cable link and internal routing between DMZ and internal networks (100MBit). Running HTTP, DNS, SMTP (with spam filtering) proxies, DHCP, IPSEC & PPTP VPNs. Could be faster if I added RAM (not-so-cheap EDO SIMMs) but I am happy with it as long as I pace any config changes.