I Want to configure this application to use as a Private forum. So only group of people can use it. other people can not register in this or can not Post.

Is it Possible ?

How?

Any help will be appreciated.

Regards

I happened to create a wiki page on how to setup a secure forum. I'm afraid it's a couple of years old but you may wish to scan through it (or look at the pictures) if you're having problems.

http://sueetie.com/wiki/FeatureRichYAFSecureForums.ashx 

Good luck,

Dave