southern writes:  

BackTrack is a Live Linux distribution based on SLAX that is focused purely on penetration testing. Distributed by remote-exploit.org, BackTrack is the successor to Auditor. It comes prepackaged with security tools including network analyzers, password crackers, wireless tools and fuzzers. Although originally designed to Boot from a CD or DVD, BackTrack contains USB installation scripts that make portable installation to a USB device a snap.

pendrivelinux