[Plugin: Mingle Forum] Is there a private (passworded) and secure version of mingle forum?

[banamazon]

Hi I’m looking to create a forum that is available only to a specific membership. Is this possible using mingle?
or could I have the member sign in on the whole site and include a mingle forum within that?

Thanks in advance
Bananna

http://wordpress.org/extend/plugins/mingle-forum/