I understand a bit about the IP routing issues, I have already seen some of them with Kamailio being confused about a private vs. a published public address.
Thanks for your help, I have more ideas I am going to try today. On Wed, Oct 16, 2013 at 8:41 AM, Klaus Darilion < klaus.mailingli...@pernau.at> wrote: > Hi Coy! > > > On 16.10.2013 14:29, Coy Cardwell wrote: > >> Thanks. >> >> By "as long as IP connectivity between the outbound proxies and >> registrars is not filtered", what exactly must not be filtered? >> The proxies and their 'local' registrars will be in the same private IP >> cloud. >> > Then it should be fine. > > > Are you implying if a proxy tries to reach a nat-ed registrar in >> another, different, private IP cloud it won't work? >> > > Probably it depends on the NAT and how the cloud is connected to the > Internet and other clouds. But also NATed servers should be fine, if the > NAT does not mangle SIP packets and the proxies are configured to announce > the public IP address. > > Thus, hmm, there may be problems depending on your setup. For example: > > Internet (public IP) Cloud 1 > 1.1.1.2 outboundproxy 1: 10.0.1.2 > 1.1.1.3 registrar 1: 10.0.1.3 > > Internet (public IP) Cloud 2 > 2.2.2.2 outboundproxy 2: 10.0.2.2 > 2.2.2.3 registrar 2: 10.0.2.3 > > > If the outboundproxy (OBP) 1 talks to registrar 1, does it us the internal > IP addresses or the public IP addresses? For later, Kamailio can be simply > configured to announce the public IP addresses in all SIP messages. But if > internal traffic uses internal IP addresses, then the OBP is "virtual" > multihomed, and Kamailio must be correctly configured to announce the > private IP address when talking to the registrar, but using the public IP > address when talking to customer in the Internet. > > Further, if OBP1 talks to registrar2, then such "virtual" mutlihomed > setups are also needed on the registrar server. > > Conclusion: I guess every private cloud has different network techniques > how traffic is routed externally and internally. Thus, the Kamailio > configuration heavily depends on the underlying network (as IP addresses > are put into the SIP messages). But at least Kamailio is very flexible and > up to now I always have solved strange network setups. > > regards > Klaus > >
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