http://www.remote-exploit.org/backtrack.html

LIVE Linux Disk based on the slackware linux distribution (www.slax.org)
with tools scripts apps and codes that's should have you "penetration testing" within minutes. A very complete suite for security auditing and finding the back doors in networks, if they exist. Check the website for more info.

Documentation is here

Dowloads as listed.

Description: CD Image
Name:: bt3-final.iso
Size: 695 MB
MD5: f79cbfbcd25147df32f5f6dfa287c2d9
SHA1: 471f0e41931366517ea8bffe910fb09a815e42c7
Download: Click here

Description: USB Version (Extended)
Name:: bt3final_usb.iso
Size: 784 MB
MD5: 5d27c768e9c2fef61bbc208c78dadf22
SHA1: 3aceedea0e8e70fff2e7f7a7f3039704014e980f
Download: Click here

Description: VMware Image
Name: BACKTRACK3_VMWare.rar
Size: 689 MB
MD5: 94212d3c24cf439644f158d90094ed6a
SHA1: 21c9a3f9658133efff259adbe290723583b4fd82
Download: Click here