hesperus, thats a great idea. Class size is 10 students and I will definately involve them in practical aspects of defending themselves. But being designers, they are not accustomed to looking at log files, and text output or command line arguments.

Egaladeist, I already had them for 2 days worth of introduction to computer networks. Some of them still cannot tell the difference bewteen a router, switch or a hub. The thing that stays in their head are practical and group excercises.

I think I am gonna show them how vulnerable they really are, and then spend some time explaining what to do and what not to do while using their laptops.