BSD Today: Internet gateway configuration and basic online security rulesFeb 13, 2001, 20:48 (0 Talkback[s])
(Other stories by Hubert Feyrer)
"The first part of this article has given an overview of DSL, how it works with NetBSD and how you can set it up. Now after you have installed and setup your shiny new DSL connection, some considerations should be made about being online and utilizing the connection while preparing for the less friendly side of "The Net". This part of the article gives an overview of ways to use your DSL machine as gateway for your home or office network, and goes through the basic steps to setup and maintain security to machines connected directly to the Internet."
"... Setting up NAT allows several computers to share one network connection, multiplexed via a NATing gateway. One other thing you will want to setup after NAT is a caching proxy, to only fetch any web pages (and images, etc.) if they haven't been fetched by someone from your internal network recently. ..."