Chaining up networks with Linux [Rawn Shah]
- Good article describing Firewalling. List of resources at the bottom of the article. Available also in PDF format.
- This document describes how to enable the Linux IP Masquerade feature on a given Linux host. IP Masq is a form of Network Address Translation or NAT that allows internally connected computers that do not have one or more registered Internet IP addresses to have the ability to communicate to the Internet via your Linux box's single Internet IP address.
Sentry Firewall [FAQ] [download]
- You boot from this CD, and with a few preconfigured files on a floppy (on which you've flipped the write-protect switch to read-only) you have a running firewall.