How to archive drupal forums?
They are not visible in search results 


http://drupal.org/project/search_config


They are shown in a different container


Templating system, or blocks, or panels


They are visible only to some users based on user-roles


EDIT

Those 2 steps are equal, but becose my understanding problem the last point can be different.

In /admin/people/permissions you should have the options to allow only some roles to access the forms nodes.