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Computer Security
A collection of resources, articles, tutorials and other fun bits:
The Only True Guide to Learning how to Hack
by R4DiATiON, of mc2.nu.
One of the most influential texts on hacking I read when I first became interested in the field.
WarGames
a small list of some good hacking challenges online. Don't get sidetracked by these though - they will only take you so far, and a lot of them are not realistic at all.
The Conscience of a Hacker
An influential text by the Mentor. A must read.
fyodor's good reading
an excellent assortment of reading material on advanced and generic topics, compiled by one of the most respected names in infosec.
General Notes
I don't have time right now to give a lot of detail about computer security as a whole (hence the above is a little thin). But here's what I'd say if you asked me how best to learn about network security and hacking:
Buy or ask to be given old computers (ask companies, friends, family, people who are buying new computers. If you're rich, just buy a few basic boxes).
Install various brands of linux on some of them. Install a web server on one. Network them together with a hub. Attack services on the linux boxes. Use bugtraq to find exploits. See how the exploits work and start to learn C. Patch the vulnerable services and try again. Set up an FTP server. Sniff the passwords using ethereal while you login to FTP. Re-Network using a switch this time. Code an application to ARP flood the switch so you can sniff it again. Learn how to use hping, netcat, putty, scp, nmap, ftp and http.
Every time you root a box, code an application to automate it. Search the net (bugtraq) for existing exploits, if there are none, publish to bugtraq, if there are, patch and try again.
Keep looking for new tools and techniques, and try to figure some of it out yourself.
more coming soon(ish).
I'm currently looking at virtual machines for windows. If and when I find something workable, I'll put a full tutorial online telling you exactly how to do all of the above without having to buy several computers. But don't count on me - do some research yourself. And as with anything, let me know if you find anything cool :-)
