Brunner, Brian T. wrote:

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over the next several weeks, i'm teaching some courses in RHEL admin but (unsurprisingly) i'll be using centos 5.5. it's a decently-written, 3rd party course, all the generic, standard admin topics but it does leave me about a 1/2 day to throw in any cool stuff i want to add. so, any recommendations for neat things that people here have done

For me: I'd want to have a closer look at things that *might* give advantages but DO bring troubles: SEL KVM

And dangers such as DoS DDoS Zombie computers randomly port-scanning Internal user ignorance, apathy, malice, and mis-information about how to secure the campus network from the hostile world. A boss who does not understand what he wants, but he wants it real bad.

Which leads back to what I suggested - an overview of the architecture of *Nix. I worked in a division of a telecom once that some of the 27 teams had files *everywhere* (including /), and everyone had the root password....

mark