[Asterisk-Users] Newbie: Only allow authenticated users to call

[Henry Jensen]

I made the observation that I'm able to make a call with my SIP client (kphone)  even when I'm not 
registered/authenticated.

Of course, when I'm not registered at asterisk, people can't call me, but it's still a huge security hole,
that unregistered Clients can make calls. 

Is there a way to tell asterisk to only allow registered clients making calls? I know about the "Anti Ex
Girlfriend" function, but this is not what I want.


Regrads,
Henry