[opencms-dev] members only module

[KDK]

I'm a newbie.  So please bare with me.

Is there module available that will allow me to specify some sections,
some articles and some parts of any article as only available to
members/groups.

That way, if the user is not logged in, they would have to log in.
Once authenicated and authorized they would be allowed to view the content.


Is there anything like this available?   Please help me out...


thanks