Router/firewall With Linux

I want to use an old PC (Pentium 350 with 2 network cards) as router/firewall in order to connect other PCs to Internet through a hub.
(Sometime I heard about a Linux system used as router without hard disk that boot from floppy disk.)
Somebody can help me?

Thank you in advance.

some reading :

http://www.smoothwall.org/
http://www.shorewall.net/
http://www.ipcop.org/
http://www.fs-security.com/

take your pick,the choice is yours,

Andy

some reading :

http://www.smoothwall.org/
http://www.shorewall.net/
http://www.ipcop.org/
http://www.fs-security.com/

take your pick,the choice is yours,

Andy
[/b]

I was going to ask the same question, so thanks for the links deltaflyer

Dont forget m0n0wall - http://m0n0.ch/wall/

Based on FreeBSD. I run it on a PIII 1g box, using a CF card in an IDE adapter as the hard drive.

Paul