[Freeswitch-users] Reply to Via

Wed Feb 17 17:36:54 UTC 2021

I think the -nonat switch only stops FS from detecting NAT during startup. FreeSWITCH can be told to be very aggressive about working through NAT using various settings.

Also, I was recently trying to solve what I believed to be a NAT problem and discovered that the various NAT settings do not do exactly what you might think. It is worth reading the wiki about them.

https://freeswitch.org/confluence/display/FREESWITCH/NAT+Traversal

That is all the help I can provide at this point, I’m afraid. 

John Boteler

Bote Communications

From: FreeSWITCH-users <freeswitch-users-bounces at lists.freeswitch.org> On Behalf Of Carsten Bock
Sent: Tuesday, 16 February, 2021 07:08
To: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
Subject: Re: [Freeswitch-users] Reply to Via

Yes, FreeSwitch is started with "-nonat"...

Thanks,

Carsten

--

Carsten Bock I CTO & Founder

ng-voice GmbH

Trostbrücke 1 I 20457 Hamburg I Germany
T +49 40 524 75 93-40 | M +49 179 2021244 I  <http://www.ng-voice.com/> www.ng-voice.com

Registry Office at Local Court Hamburg, HRB 120189
Managing Directors: Dr. David Bachmann, Carsten Bock

Am Di., 16. Feb. 2021 um 11:51 Uhr schrieb David Villasmil <david.villasmil.work at gmail.com <mailto:david.villasmil.work at gmail.com> >:

-nonat ?

On Tue, 16 Feb 2021 at 10:00, Carsten Bock <carsten at ng-voice.com <mailto:carsten at ng-voice.com> > wrote:

Hi,

I have a quick NAT related question.

Is there a way to disable NAT handling completely?

FreeSwitch always replies to the IP/Port were it received the message from and not to the host/port in Via....

recv 1166 bytes from udp/[172.17.0.1]:36835 at 10:20:56.652918:
------------------------------------------------------------------------
INVITE sip:ann-early at 167.99.136.226:5080 <http://sip:ann-early@167.99.136.226:5080>  SIP/2.0
Record-Route: <sip:167.99.136.226:5070;lr>
Via: SIP/2.0/UDP 167.99.136.226:5070;branch=z9hG4bKe305.92946d84.0
Via: SIP/2.0/UDP 192.168.178.52:37350;received=93.221.23.15;branch=z9hG4bK-524287-1---936bd2b8103acd0c;rport=37350

[...]

send 366 bytes to udp/[172.17.0.1]:5070 at 10:20:56.659313:
------------------------------------------------------------------------
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 167.99.136.226:5070;branch=z9hG4bKe305.92946d84.0;received=172.17.0.1
From: <sip:b2bua at 167.99.136.226:5070;transport=UDP>;tag=7793d52b
To: <sip:3 at 167.99.136.226:5070 <http://sip:3@167.99.136.226:5070> >
Call-ID: akjc99KAbZfHxXHSea_iTQ..
CSeq: 1 INVITE
User-Agent: FreeSWITCH-mod_sofia/1.10.5-release+git-20201002T121516Z~a1bfb14c04~64bit
Content-Length: 0

Is there a way, to make FreeSwitch simply reply to the Host/Port in the Via-Header?

My Profile is rather simple and I tried it with setting the local network ACS and NDLB-force-rport:

    <profile name="local">
   <settings>
   <param name="local-network-acl" value="none"/>
<param name="NDLB-force-rport" value="disabled"/>    
   <param name="context" value="local"/>
        <param name="sip-ip" value="$${local_address}"/>
        <param name="ext-sip-ip" value="autonat:167.99.136.226"/>
        <param name="sip-port" value="5080"/>
        <param name="rtp-ip" value="$${local_address}"/>
        <param name="ext-rtp-ip" value="autonat:167.99.136.226"/>
        <param name="auth-calls" value="false"/>
      </settings>
    </profile>

Changing "NDLB-force-rport" to false did not have any impact.

Thanks,

Carsten

--

Carsten Bock I CTO & Founder

ng-voice GmbH

Trostbrücke 1 <https://www.google.com/maps/search/Trostbr%C3%BCcke+1?entry=gmail&source=g>  I 20457 Hamburg I Germany
T +49 40 524 75 93-40 | M +49 179 2021244 I  <http://www.ng-voice.com/> www.ng-voice.com

Registry Office at Local Court Hamburg, HRB 120189
Managing Directors: Dr. David Bachmann, Carsten Bock

_________________________________________________________________________

The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
Build your next product on our scalable cloud platform.

Join our online community to chat in real time https://signalwire.community

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-- 

Regards,

David Villasmil

email: david.villasmil.work at gmail.com <mailto:david.villasmil.work at gmail.com> 

phone: +34669448337

_________________________________________________________________________

The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
Build your next product on our scalable cloud platform.

Join our online community to chat in real time https://signalwire.community

Professional FreeSWITCH Services
sales at freeswitch.com <mailto:sales at freeswitch.com> 
https://freeswitch.com

Official FreeSWITCH Sites
https://freeswitch.com/oss
https://freeswitch.org/confluence
https://cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users at lists.freeswitch.org <mailto:FreeSWITCH-users at lists.freeswitch.org> 
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
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