On 06/25/08 12:33, Klaus Darilion wrote: > > > Daniel-Constantin Mierla schrieb: >> Hello, >> >> On 06/18/08 06:11, Davey Goode wrote: >>> Hi All, >>> >>> Traditionally for outbound routing to the PTSN world via a cisco >>> voice gateway we use HOC's or prefixes, has anyone ever looked at >>> incorporating the x-route-tag feature to replace the HOC/ prefix in >>> openser ??? >>> >>> In NZ we have a local code shop that has written a SIP proxy, they >>> have incorporated it into their proxy and it works great! it would >>> be a really nice feature. >>> >>> I would be more than happy to contribute $ if someone wanted to >>> write it. >>> >>> see >>> >>> >>> >>> http://www.cisco.com/en/US/docs/ios/12_2t/12_2t11/feature/guide/ftgwrepg.html#wp1217685 >>> >>> >>> >> did I understand correct that this will be solved by the possibility >> of adding a custom parameter to the Via header going to be inserted >> by the proxy itself? > > If I understand it right: yes > > This is IMO a dangerous feature. The docs says that if the topmost via > header does not have such a tag it will search for the tags in the the > other via headers. Thus, for example, if the users SIP client adds the > parameter and the proxy just forwards the request (with adding a > parameter itself and without screening existing via parameters) the > client can enforce a certain trunk. Sounds like this. Perhaps the entity dealing with it, must have a second layer of trust policies.
Now, do you find dangerous the possibility to add custom parameters to Via headers or just this specific feature? Cheers, Daniel > > regards > klaus -- Daniel-Constantin Mierla http://www.asipto.com _______________________________________________ Devel mailing list Devel@lists.openser.org http://lists.openser.org/cgi-bin/mailman/listinfo/devel
