[AsteriskNOW] Authenticate INVITE

How can I authenticate INVITE request with asterisknow?
On every IPphone (Pingtel) I can apply an authentication on incoming calls, but it’s not what I want.
Because, for the moment it’s possible to send INVITE request (with Sivus), so ring a phone without being registered on my proxy.

My english is poor, I hope somebody understand these few lines :smile:
Thanks for your help.

Just use a firewall and don’t let traffic from anything other then your proxy to get to the phones… Or maybe in the phones themself you can configure them to only accept traffic from your proxy IP.

Ok, I get it, I will show my firewall.

If somebody has an other idea to authenticate INVITE request from asterisk I’m ready to ear you…