Linux Firewall

You might currently have a old computer that you think isn’t useful and is just gathering dust well you can put it to good use and turn it into a Linux firewall.

If you do this you will have your self an inexpensive firewall, all you might need to pay for is 2-3 NICs (Network interface card) an old pc for next to nothing or you might even have one lying around that you were just going to throw out.


http://smoothwall.org/
SmoothWall Express is an open source firewall distribution based on the GNU/Linux operating system. Linux is the ideal choice for security systems; it is well proven, secure, highly configurable and freely††† available as open source code. SmoothWall includes a hardened subset of the GNU/Linux operating system, so there is no separate OS to install. Designed for ease of use, SmoothWall is configured via a web-based GUI, and requires absolutely no knowledge of Linux to install or use.
††† Free as in beer, libre, freedom.