IPCop Firewall – Bad Packets Stop here!!!
IPCop Firewall is a well known Opensource Linux distribution built to protect Home and SOHO networks from hackers and potential intruders on the Internet. IPCop can run a old PC and can be installed and be operational within minutes.
Untangle is the free & open source alternative to Sonicwall. In addition to the basics (Firewall, VPN, IPS & routing), Untangle makes it easier to block spam, spyware, viruses, phishing, porn, gambling, MySpace, Facebook, IM, peer-2-peer & much, much more. Untangle has been named the "Best Security Solution" – LinuxWorld 2007
On October 29 2007, Vyatta announced the latest release of its open-source networking software. The Vyatta Community Edition (VC3) software combines router, firewall, and VPN capabilities into an integrated solution that delivers twice the performance of proprietary network solutions at half the price.
Are you throwing away your old PC??? Think again!!
Smoothwall Express 3.0 [Codename: POLAR] is a free opensource linux based firewall which can installed and be up and running in just in minutes. Smoothwall Express 3.0 is licensed under GPL license.