>> I am kind of new to redhat security, and for my class, i need to give
>> users accounts to my server(i only have ssh open). But these students
>> run commands to make my cpu go at 100% so no one else can use it.
>
> Have you looked for ulimit?

Isn't that shell specific? i.e. can't a user still run a compiled program
that fork bombs or other wise consumes too many resources?

--
Jem Berkes
http://www.pc-tools.net/
Windows, Linux & UNIX software