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Setting up an Ubuntu Wired/Wirless Router
Preface
This article exists due a lack of concise and easily followed information available on the subject of setting up an wired and/or wireless Ubuntu router. It is intended for advanced users who have or would like to set up a dedicated Ubuntu installation acting as a router at home or in their office. The end result is a powerful router that can provide functionality similar to popular products (like, for example, the Linksys WRT54G).
Prerequisites
Knowledge
Broadband Connection
A broadband connection like a cable or DSL modem is required. Your broadband service provider must either provide the necessary information to configure your IP address statically or provide a dynamically assigned address via DHCP. If your connection requires PPPoE (as can often be the case with DSL service), you'll find the existing the article ["ADSLPPPoE"] to be of value.
Server
You'll need a dedicated computer (or server) to act as the router. While you can have a router that it is "headless" (i. e. having no monitor or keyboard attached), do not so until you have it completely set up.