VoIP Mailing List Archives

[carsten at ng-voice.com]

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@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@167.99.136.226:5070;transport=UDP>;tag=7793d52b
To: <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 I 20457 Hamburg I Germany
T +49 40 524 75 93-40 | M +49 179 2021244 I www.ng-voice.com
Registry Office at Local Court Hamburg, HRB 120189
Managing Directors: Dr. David Bachmann, Carsten Bock

[david.villasmil.work a...]

-nonat ?

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

[krice at freeswitch.org]

-nonat only disable trying to find natpmp/upnp stuff at startup. it does not stop protocol specific nat handling (as in mod_sofia) from happening.

Make sure your NAT ACLs and and related settings are correct for your routae networks and you arent forcing some of the NDLB settings on the sofia profiles

Sent from my iPhone

[carsten at ng-voice.com]

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 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@gmail.com (david.villasmil.work@gmail.com)>:

[botelist at gmail.com]

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@lists.freeswitch.org> On Behalf Of Carsten Bock
Sent: Tuesday, 16 February, 2021 07:08
To: FreeSWITCH Users Help <freeswitch-users@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 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@gmail.com (david.villasmil.work@gmail.com)>:

[brian at freeswitch.com]

don't set ext-sip-ip or ext-rtp-ip or the local-network-acl and you shouldn't have any processing anymore.

On Wed, Feb 17, 2021 at 12:08 PM Bote Man <botelist@gmail.com (botelist@gmail.com)> wrote: