Virtual Privacy Machine is a Linux LiveCD that includes Firefox, Privoxy, Tor, some IRC and IM applications, and a set of ipchains rules aimed to prevent non-Tor traffic from accidentally leaving your computer.
Virtual Privacy Machine, known as VPM for short, is an assemblage of various Free Software to provide a secure platform for improving Tor's weaknesses. VPM is built on top of the DamnSmallLinux embedded distribution which is designed to run on portable rewritable media such as a USB flash drive.