[SR-Users] Kamailio-5.3.3. NAT and RTP not working

[supreeth herle]

Thanks for the pcap. Sorry, to ask this but can you also send pcap of
scenario where you see RTP packets?

Also, did you restart the rtpproxy after altering the /etc/default/rtpproxy
?

i.e.

$ systemctl restart rtpproxy

Best Regards,
Supreeth

On Thu, 14 May 2020 at 14:51, Pavithra Mohanraja <pavimohan3004 at gmail.com>
wrote:

> Hi Supreeth,
> I have attached pcap files . kindly check and let me know.
> filter of rtp packets and check.
>
> *filter : sip || rtp*
>
>
> On Thu, May 14, 2020 at 5:15 PM supreeth herle <herlesupreeth at gmail.com>
> wrote:
>
>> Hi Pavithra,
>>
>> Thanks for the clarification. Can you please attach a pcap of the call
>> where you are not seeing the RTP packets? And, btw is the call getting
>> dropped or something in that scenario?
>>
>> Regards,
>> Supreeth
>>
>>
>> On Thu, 14 May 2020 at 13:34, Pavithra Mohanraja <pavimohan3004 at gmail.com>
>> wrote:
>>
>>> Hi Supreeth,
>>>
>>> I have kamailio ims installed in 4 vms inside openstack.
>>>
>>> 10.40.10.3 - pcscf in port 4060 (pcscf with NAT enabled in pcscf.cfg
>>> (!#define WITH_NAT) and configured rtpproxy)
>>> 10.40.10.12 - icscf in port 4070
>>> 10.40.10.5 - scscf in port 4080
>>> 10.40.10.30 - hss
>>>
>>> so all these vms are running in same subnet.
>>> I have a floating ip associated to pcscf.
>>> Now I have two zoiper clients outside openstack
>>> zoiper1 - 10.0.2.15 (NAT Enabled Network adaptor)
>>> zoiper2 - 10.0.2.15
>>>
>>> when i am making a call from zoiper1 to zoiper2, call is going properly
>>> . SIP messages are coming properly in wireshark packets.
>>> when i filter for RTP packets in wireshark,  it is not coming.
>>>
>>>
>>> when i have the zoiper clients inside openstack itself ,i can able to
>>> see RTP Packets in wireshark between two sip clients without any NAT
>>> related configurations done.
>>>
>>> Kindly help me.
>>> Thanks.
>>>
>>> On Thu, May 14, 2020 at 4:49 PM supreeth herle <herlesupreeth at gmail.com>
>>> wrote:
>>>
>>>> Can you explain some more when you mean by "RTP alone is not coming."?
>>>> And, how are you checking/verifying that?
>>>>
>>>> Regards,
>>>> Supreeth
>>>>
>>>> On Thu, 14 May 2020 at 13:12, Pavithra Mohanraja <
>>>> pavimohan3004 at gmail.com> wrote:
>>>>
>>>>> Hi ,
>>>>>
>>>>> Yes I have configured as you mentioned only . In my pcscf only i have
>>>>> rtpproxy also configured.
>>>>> Floating IP i have given in listen address also as
>>>>> listen = 10.40.10.3:4060 advertise 10.45.4.22:4060
>>>>>
>>>>> 10.40.10.3 - private ip
>>>>> 10.45.4.22 - floating ip
>>>>> Still RTP alone is not coming.
>>>>>
>>>>> Is it the only way of configuring NAT ?
>>>>>
>>>>> Thanks.
>>>>>
>>>>> On Thu, May 14, 2020 at 4:37 PM supreeth herle <
>>>>> herlesupreeth at gmail.com> wrote:
>>>>>
>>>>>> Hello Pavithra,
>>>>>>
>>>>>> Have you tried advertising the floating IP of the VM running RTPProxy
>>>>>> as follows?
>>>>>>
>>>>>> Edit /etc/default/rtpproxy file as follows:
>>>>>>
>>>>>> # Additional options that are passed to the daemon.
>>>>>> EXTRA_OPTS="-l 172.24.15.30 -d DBUG:LOG_LOCAL0"
>>>>>>
>>>>>> here, "-l <PUBLIC_IP>"
>>>>>>
>>>>>> Hope it helps.
>>>>>>
>>>>>> Regards,
>>>>>> Supreeth
>>>>>>
>>>>>> On Thu, 14 May 2020 at 13:01, Pavithra Mohanraja <
>>>>>> pavimohan3004 at gmail.com> wrote:
>>>>>>
>>>>>>> Hi ,
>>>>>>>
>>>>>>> Could anybody please give me the approach how to configure NAT in
>>>>>>> kamailio IMS.
>>>>>>>
>>>>>>> I have installed kamailio IMS in openstack environment which has
>>>>>>> private ips for all four vms (each component in one vm). pcscf has one
>>>>>>> floating IP attached. I have enabled "WITH_NAT" and configured rtpproxy .
>>>>>>>
>>>>>>> when i make a call from outside of openstack using 2 zoiper clients
>>>>>>> with outbound proxy keeping floating ip of pcscf, I am getting 200 ok with
>>>>>>> all SIP packets correctly flowing but there is no RTP Packet.
>>>>>>>
>>>>>>> When i try the same within openstack environment without using
>>>>>>> public ip, I am getting RTP Packets.
>>>>>>>
>>>>>>> Kindly tell me the procedure of NAT Enablement or do i need to do
>>>>>>> anything other than this.
>>>>>>>
>>>>>>> Kindly help because i am stuck with this for long time.
>>>>>>>
>>>>>>>
>>>>>>> Thanks.
>>>>>>> _______________________________________________
>>>>>>> Kamailio (SER) - Users Mailing List
>>>>>>> sr-users at lists.kamailio.org
>>>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>>>>
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