Quote Originally Posted by caveman8fb
nmap has the ftp bounce relay option.
Exactly. I was just going to point this one out.

Don't forget about the idle scan too.
http://en.wikipedia.org/wiki/Idle_scan

Anyway, as others have pointed out, computer security is a double edge sword. What good is trying to protect your systems if you don't know the methods that the attackers might be using? How do you setup your defenses?

Thats why we have something called ethics. Learn all you want about whatever you want... but use your knowledge wisely. If you want to be dumb and have your ISP canceling your account or dragging you or your parents into court... then go for it!

You'll find that a lot of the very serious security professionals monitor/participate in the "underground" scene to keep up to date. They gain their trust, offer advise, etc. all to stay ahead of them.

Why do we have books like the Hacking Exposed series, or Hack Attacks Revealed series? Not only script kiddies buy those books.