Over at ONLamp.com, Michael Lucas talks about putting a BSD onto a Soekris NET4801 based PC.

The Soekris net4801 is a "low-power, low-cost, advanced communication computer is based on an up to 266 Mhz 586 class processor. It has three 10/100 Mbit ethernet ports, up to 256 Mbyte SDRAM main memory and uses a CompactFlash module for program and data storage. It can be expanded using a MiniPCI type III board and a low-power standard PCI board."

To put it another way, it's a reasonably cheap, quiet little machine that would serve perfectly well as a home or small office firewall.

Anyway. If you're into that sort of thing, have a read of the article.

ONLamp.com: Homemade Embedded BSD Systems