On RedHat any valid user can shut down or reboot the sysytem by giving the following shell command
user@machine # poweroff
user@machine # reboot
How can I disable it? I have already disabled CrlAltDel.
Also is there any other way a nonprivileged user can shutdown a system, if so how do I disable it.
--------------------------------- Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more