3 Pack Linux Firewall CDs

IPCop 1.4.18
The purpose of IPCop is a powerful firewall that can allow you some advanced features including VPNs using IPSec. IPCop takes control of your computer settings and replace any operating system installed instead of running as an additional security service. IpCop is a security powerhouse with IPChains-based firewall, DMZ Support, SSH server for Remote Access, DHCP server, Caching DNS, TCP/UDP port forwarding, Snort, and FreeSWAN.
MOnOwall 1.23
Based on a basic version of FreeBSD, m0n0wall is focused on creating an embedded software package that works with your PC to provide all the important easy to use features of commercial firewall boxes at at a fraction of the cost. Here's some of the features you'd expect to find in an expensive commercial firewall; web, serial console interface for recovery, wireless support, captive portal, 802.1Q VLAN support, NAT/PAT, DHCP server and relay, DynDNS client SNMP agent, host/network aliases and tons more.
SmoothWall Express 3
Codenamed "Polar", SmoothWall is a free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface. Smoothwall Express 3 features the Linux 2.6 kernel, a great new web interface and many more features.