I too have seen this, with improperly configured MikroTik routers. On Sun, Aug 12, 2018 at 9:21 AM Michael Wolthuis <wolthuis@gmail.com> wrote:
I have seen this before if you are using PFSense as your outbound router and you are NOT static locking NAT outbound, it will pick a port at random. Other firewalls have also done it if not set for static, but most consumer grade routers do NOT mangle NAT this way.
Mike Kb8zgl
On 8/12/18, 12:06 PM, "App_rpt-users on behalf of Bryan Fields" < app_rpt-users-bounces@lists.allstarlink.org on behalf of Bryan@bryanfields.net> wrote:
On 8/12/18 12:06 PM, Paul - KN2R wrote: > I have all set and been using port 44569 for well over a year on that > server. > Now this morning the registration server is reporting the incorrect port > number of 54799. > I Never used that number. Now inbound connections are not working any more.
Ok, are you behind NAT? What are you doing there that iax is not connecting outbound with a source port of 44569?
I just pulled a dump of your traffic to the registration server and I see you're hitting it with a source port of 54799, not 44569. I think this has to be some nat funkyness, using a different outgoing port vs incoming.
Can you check that and give some details if you are behind nat as to the setup you have?
Thanks, -- Bryan Fields
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-- Tim WD6AWP