[Freeswitch-users] NDLB-force-rport question

[Giovanni Maruzzelli]

What FS version and platform?

What phones?

Maybe is a problem with carrier? (Udp only...)

Have you tried the default configuration, the original one, without
altering or adding things?


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Giovanni Maruzzelli
OpenTelecom.IT


On Jul 12, 2017 12:54 PM, "Igor Olhovskiy" <igorolhovskiy at gmail.com> wrote:

Hi!

I’m having strange issues on registering phones behind NAT on FreeSwitch.

Schema is Phone (port 5063)  -> Router (NAT) (port 1023) -> Freeswitch

Phone registering from port 5063. NAT is changing this port to 1023.
Freeswitch receiving register message from port 1023, but still replying to
port, that listed in Contact Header. So, Router can’t route this request
back correctly.

NDLB-force-rport and aggressive-nat-detection is enabled on internal
profile. What I got, this issue is when router changes port to 1024 or
lower. If port is higher that 1024, than it’s working ok.
Also this problem with UDP only, with TCP all is ok.

Maybe I’m missing something in config?

Thanks.

Regards, Igor

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