hi

http://s-t-d.org/faq.html
some question answere from faq

What is Knoppix-STD?
STD is a Security Tool. Actually it is a collection of hundreds if not thousands
of open source security tools. It's a Live Linux Distro (i.e. it runs from a
bootable CD in memory without changing the native operating system of your PC).
It's sole purpose in life is to put as many security tools at your disposal with
as slick an interface as it can.

What can I do with Knoppix-STD?
Turn it into a firewall, a web server, an IDS box, a honeypot. Use it to do data
recovery on an dead or locked computer, perform a vulnerability assessment, a
penetration test, perform an autopsy on a compromised machine, test your
incident response team. Listen to your MP3 collection and play gnugo while
waiting for that nessus scan to complete.

tools it contains
http://s-t-d.org/tools.html

download
http://s-t-d.org/download.html

for faq
http://s-t-d.org/faq.html