I am a teacher giving pentesting classes and I have a group of students that I have been teaching for 4 years now.
I would like to make a little "hacking contest" in which there is a vulnerable machine, and the children try to get root access to it. In order to do that I have started looking for a highly vulnerable OS that I can install on an external machine (one that I had lying around for a while now). I have found some OSs that are vulnerable such as metasploitable. But they are all designed to be installed on a VM. But that is not what I need. I need an OS that I can burn on a cd, or a USB and installed on a PC.
Why am I not hosting a VM on my own machine? I can do that but the machine that I have is old, and not used. So it will be thrown away. And I really want to make some use out of it.