El Monday 15 October 2007 22:35:34 Klaus Darilion escribió:
Iñaki Baz Castillo wrote:
El Monday 15 October 2007 12:12:44 Klaus Darilion escribió:
What exactly do you want to achieve? Do you want to allow REFER only intradomain?
Exactly.
- Imagine you admin a OpenSer that gives service to 2 independent
companies (domain_A and domain_B).
- Imagine a user_A of domain_A calls to a user_B of domain_B.
- During the call user_A does REFER.
- OpenSer requires auth por REFER, so user_A sends auth (it can since
it's a local user).
- So finally user_B is transferred by an external user. Of course this is
not tolerable.
So I need to allow a REFER just if the caller and called are in the same domain, but REFER is in-dialog so there is not domain name in the URI.
just an idea: check if $fd of REFER is identical to domain in REFER to header - if not -> reject it.
It's a great idea! Of course I need to test it. For example: What about if the "Refer-to" header just contains "sip:001234234234" with no @domain? maybe there are "broken" SIP devices which auto-complete this URI with their domain?
Further, if B's phone send out the new INVITE, if $rd != $fd then do not send the call to the gateway.
Humm, it can't be, because in case of a forwarding (implemented in OpenSer) I do allow calls from others domain to PSTN gateway.
Thanks a lot for your suggest, it's a very good solution :)