[Talisman]

In your Admin Control Panel, go to Usergroups > Forum Permissions..... then "edit" the Unregistered/Not Logged In usergroup. (Go back here later and do the same for your "Awaiting Email Confirmation" usergroup.)

From here, you can deny them whatever permissions you want to turn off --> canview, cansearch, canemai,l canpostnew, canmove, canopenclose, candeletethread, canreplyown, canreplyothers, canviewothers, caneditpost, candeletepost, deletetimelimit, canpostattachment, canpostpoll, canvote, cangetattachment.