[Freeswitch-users] OT: Snom phones reporting incorrect port in Contact/Via

Jonas Gauffin jonas.gauffin at gmail.com
Thu Apr 15 00:15:40 PDT 2010


It doesnt make sense. But the fact is that the FW/router assigns another
port than the requested one.

I found a setting in latest firmware for snom which disables rport. But when
turned off, it stops using the external IP that stun found. Turning off
RPORT should not turn of external ip detection, right?

My FS server is on a public IP. Can I tell FS to always send replies to
received-ip instead of the one specified in the request (if the specified ip
is a RFC1918 ip?)

On Wed, Apr 14, 2010 at 9:36 PM, Michael Jerris <mike at jerris.com> wrote:

> This does not make any sense.  It limits outbound connections based on
> source port?  rport would make us tell the guy the port he DID come from, so
> the nat mapping is in place and working because we got the packet from that
> port.
>
> On Apr 14, 2010, at 10:50 AM, Jonas Gauffin wrote:
>
> Most of my customers have forwarded ports in their firewalls/routers. Those
> ports will not be used if rport is turned on.
>
> I currently got a problem with a customer  who is using an old Windows 2000
> server as firewall/router. It wont let packets through when using rport. It
> would work if rport was turned off and all communication was done using the
> configured port.
>
> On Wed, Apr 14, 2010 at 3:53 PM, Brian West <brian at freeswitch.org> wrote:
>
>> You want rport otherwise NAT HELL will begin.
>>
>> /b
>>
>> On Apr 14, 2010, at 8:11 AM, Jonas Gauffin wrote:
>>
>> > Well, yes. But snom can only turn off rport through provisioning and
>> only in the latest firmware.
>> >
>> > It would be great if it could be turned off in FS too, per user account.
>>
>>
>
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