[SR-Users] Issue with ACK behind NAT

[Alberto Sagredo]

Yes

i made a tcpdump..

as packet is with 172.26.x.x and arrives to 192.168.0.170, seems to discard


08:14:30.154820 IP 172.26.101.10.5080 > 192.168.0.170.8002: UDP, length 456

E...v... at ./...e

.......B..v.ACK sip:110 at PUBLIC IP:5066 SIP/2.0

Via: SIP/2.0/UDP 172.26.101.10:5080;branch=z9hG4bK6f81f8cd

Route: <sip:192.168.0.170:8002;nat=no;ftag=as346dc29d;lr=on>

Max-Forwards: 70

From: "asterisk" <sip:110 at 172.26.101.10:5080>;tag=as346dc29d

To: <sip:110 at 172.26.101.50:8002>;tag=608896762

Contact: <sip:110 at 172.26.101.10:5080>

Call-ID: 0a0d09e612cf4f9401698baf112dc644 at 172.26.101.10:5080

CSeq: 102 ACK

User-Agent: ast01

Content-Length: 0


Network issue as i see here :/.

2015-07-29 10:20 GMT+02:00 Alex Balashov <abalashov at evaristesys.com>:

> On 07/29/2015 04:19 AM, Alberto Sagredo wrote:
>
>  No. ACK seems to do not arrive to Kamailio
>>
>
> The 'tcpdump' filter I gave you won't show you that. It was designed
> specifically to capture packet flow between Kamailio and the phone.
>
> To see whether it arrives at Kamailio, you'll need to liberalise the
> parameters:
>
>    tcpdump -i any -A -s 0 -n udp port 8002
>
> --
> Alex Balashov | Principal | Evariste Systems LLC
> 303 Perimeter Center North, Suite 300
> Atlanta, GA 30346
> United States
>
> Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>
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