How do set permission to access the forum?

[pootie4u]

I want to make my forum so that people have to register in order to go inside, like thise page:

http://www.x-boxworld.net/forums/

Anybody know how I can do this, I have tried looking. :cry:

[Sparkz]

You simply edit the Unregistered-usergroup and turn of the ability to view the boards.