24.2. Disabling Console Program Access

rm -f /etc/security/console.apps/*

In environments where the console is otherwise secured (BIOS and boot loader passwords are set, [Ctrl]-[Alt]-[Delete]poweroff, halt, and reboot, which are accessible from the console by default.

To remove these abilities, run the following commands as root:

rm -f /etc/security/console.apps/poweroff
rm -f /etc/security/console.apps/halt
rm -f /etc/security/console.apps/reboot