Hey, I had a chance last week to do a talk on basic Linux hardening and how it applies to Security Distros like Backtrack. I focused on Backtrack for the Security distro part, and covered CentOS and Ubuntu (at least those were the test machines) for the general Linux part.
It's on Youtube:
http://youtu.be/QLz0Ylpaf8wI'm going to go back and add notes to the slide deck probably starting next week (need something to do on the drive to Chicago for Bsides Chicago), and then paste them somewhere.
The group I did the talk in front of was MiSec (
www.michsec.org), a statewide attempt at creating a security comunity after the 2011 Bsides Detroit.