|The|Specialist provided a link to about the best wargame that is about the now Pull the Plug was good to but they took there public game down. So what you have to do is telnet to the drill.hackersab.org server and log in as level0 and the password is guest register at www.hackerslab.org for the hint for the level when and if you pass the level provide the password and it will give you a hint for the next level. I have been playing this wargame for about 2 years now and i have nearly finished it i have only got to do 2 more levels and i have learned a lot from playing it some of the exploits are old on it but a lot of it can be used in an IRL situation (not the exploits but the theary behind them). If you get stuck PM me and i will try my best to give you hints without giving you a full explanation. Also you should read up on basic Unix commands and start to do some bash scripting and learn a programming language like C or C++ well you know what to do if you need to find something out www.google.com have fun with it