Chapter 19. Advanced IP: Routing with Windows

Why route from Windows? The short answer is, because you can and because it's very informative.

A decade or more ago, routers were expensive, and it was common for network-savvy companies to use cast-off PCs as cheap routers. For example, by putting a couple of network cards in the PC and installing a copy of KA9Q NOS (a network operating system that could be configured to do nothing but route), a network engineer saved the company a lot of money on buying a huge chunk of iron from a major network vendor.