Linux Firewall/Router

[LittleGreenGecko]

Is there a way to configure a linux box to become a firewall, and a router? If so, could you explain a little as to how, or point me in the right direction?

Thanks

[Taizong]

For proxy and such, I would use squid. Simple with very little overhead (http://www.squid-cache.org/) (http://www.squid-cache.org/). There are alot of firewall solutions, being just plain IPchains or something T-Rex (www.opensourcefirewall.com). (http://www.opensourcefirewall.com)

[bdg1983]

You could start right here at LNO.

http://www.linuxnewbie.org/nhf/intel/network/index.html
http://www.linuxnewbie.org/nhf/intel/security/index.html

[Landruu]

Try this for your router http://linuxdoc.org/HOWTO/mini/Home-Network-mini-HOWTO.html

I assume you probable just want to share your internet connection.

For a firewall try http://www.pointman.org/

[Frank Taplin]

You might try looking at http://www2.linuxrouter.org:81/
It's a site dedicated to getting a Linux box that only has a floppy drive to work as a router.
If you want to use a full blown system as a router you need to enable IP forwarding. Then you need to use the route command to add the IP address for each of the nics you have in it.