About Knoppix STD
It's a Live Linux Distro, which means it runs from a bootable CD in memory without changing the native operating system of the host computer. Its sole purpose in life is to put as many security tools at your disposal with as slick an interface as it can.
STD is meant to be used by both novice and professional security personnel but is not ideal for the Linux uninitiated. STD assumes you know the basics of Linux as most of your work will be done from the command line. If you are completely new to Linux, it's best you start with another live Distro like Knoppix to practice the basics
STD tools are divided into the following categories (see the STD Tools section for details):authentication,encryption,forensics,firewall
honeypot,ads,network utilities,password tools,servers,packet, sniffers,tap tools,tunnels
vulnerability assessment,wireless tools