http://dolph.mine.nu Telnet right in (user name guest, password guest) by clicking here.
http://www.try2hack.nl/ is a great wargame for beginners. It even has a forum where you can learn how to attack it. First lesson: turn off Javascript on your browser, or else they send you to Disneyland.
Damage, Inc. is running hacker wargames on Unix-type operating systems. Play, learn cool stuff, win awards.
Hackerslab.org is a genuine hacker playground with computer break-in games, run by Korean hackers who want to discourage computer crime while encouraging those who want to legally learn how to hack. They now have an English version of their web site.
Ebina tells us how to get into the game. "You start out by registering for an account, which gives you a user name and password with which to access the 'View Problems' page. You will then see the problem you need to hack to get to level 1.
"You then telnet to drill.hackerslab.org, login as level0 and guest, and hack your way to user level1. Once level1, you run a command, `pass`, that tells you the password to login as level1. Enter that into the 'View Problems' page, and you can see the problem you need to hack to get to level 2. All the way to level 14."
To chat with other hackers playing this wargame, click here.
Try to break into this Happy Hacker web site! We dare you! Click here to learn more about our custom BrickServer operating system and web server.
Wargames hosted by Hack3r.com --->>
six by6 says "I have set up a 'hack the flag' wargame for my homepage,
http://rt45.host.sk . I'm trying to get many people connecting so it will be more fun. Its set up in a series of rounds which will occur every week or so for 3-5 hours a piece, with the first one occuring today (!) at 7:00pm-10:00pm, CST. The wargame is run on a computer owned by me in my home, built for the purpose of a wargame."
For a game that lets you play at being a movie-style hacker, try out
http://www.introversion.co.uk/.
Happy Hacker Wargame Rules
If you are serious about winning a hacker wargame, click here for help.