Reminds me of when I was in the Navy and I went to Navy Security and Vulnerabilities Technician school. I was all excited, so I went out and bought a copy of Hackers Exposed and read through the whole thing, learning everything from how to determine what family and version of operating system a computer is running by what ports are open, to how a buffer overflow attack actually works.

Fast-forward to the class, and we're sitting there running tools like BackOrifice that exploit vulnerabilities that had been patched for years, and learning that a SYN flood is "a malicious attack". That's it, just "a malicious attack". When I asked about the difference between a SYN flood and a Christmas tree attack, I got a blank stare and "they're both malicious attacks".

I spent the rest of the class in the back of the room, reading the Armadillo Book.

Also, I did not once in my brief Navy career get to hack an enemy computer. Hugely disappointing.