03-20-2012, 09:12 PM
To limit client abilities, you can limit what they can do with graphical environment. For example, in a typical Gnome environment, you would create a user called "guest" and type this in /home/guest/.xsession :
Chmod .xsession as executable. Now on, only firefox will start when the guest user logs in. If the user closes firefox, a blank screen will show up.
/usr/bin/metacity & /usr/bin/firefox
Don't worry about the world coming to an end today. It's already tomorrow in Australia.