[leafnode-list] Using Authentication to Limit Subscription to Local Groups

[Eric Hittle]

I think I already know the answer to this but is there a way to use the 
"INTERNAL" authentication method to limit which local newsgroups a user 
can subscribe to?  I've got leafnode-2 installed successfully and have 
created several a local newsgroup and users in the /etc/leafnode/users 
file.  As far as I can tell though, this authentication allows the users 
to view all the newsgroups on the server.  I'd like to be able to create 
several local newsgroups on the same server, to which I limit those who 
can subscribe to each local newsgroup by giving them a user account 
which will only allow them to subscribe to the newsgroup I specify as 
allowed for that user account.

I don't want to have to go to a more complex NNTP server if I don't have 
to, as leafnode fulfills much of what I need, but I do need something 
that provides this functionality.  Ideas?