[SR-Users] Kamailio-5.3.3. NAT and RTP not working
supreeth herle
herlesupreeth at gmail.com
Wed Jun 24 13:33:46 CEST 2020
There is no other IPSec configuration needed apart from running Kamailio
P-CSCF and UE sending a SIP Register with Security-Client information for
IPSec creation. Kamailio IMS IPSec module creates IPSec tunnels using
Netlink library.
Best Regards,
Supreeth
On Wed, 24 Jun 2020 at 13:29, Pavithra Mohanraja <pavimohan3004 at gmail.com>
wrote:
> Hi ,
>
> Could you please tell how to configure ipsec (general configuration not
> related to kamailio).
>
> Thanks,
> Pavithra
>
> On Wed, Jun 24, 2020 at 2:12 PM supreeth herle <herlesupreeth at gmail.com>
> wrote:
>
>> reason=404 (Not Found - destination user not found on this S-CSCF)]
>>>
>>
>> Please check your IMPU for the IMS user in the IMS HSS (e.g. FHoSS or any
>> other HSS you are using to enter IMS user details). SCSCF is not able to
>> find a registered user with that IMPU (i am assuming that you are getting
>> this response while calling)
>>
>> Increase the debug level on S-CSCF and check out which IMPU is being
>> referred by SCSCF
>>
>> Best Regards,
>> Supreeth
>>
>> On Wed, 24 Jun 2020 at 10:26, Pavithra Mohanraja <pavimohan3004 at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> I am facing below error in kamailio-ims 5.3.4 version.
>>>
>>> reason=404 (Not Found - destination user not found on this S-CSCF)]
>>>
>>> could you please help me how should i proceed with and where the
>>> registration details will be stored in kamailio ims.
>>>
>>> It fails at this line in kamailio.cfg file in scscf .
>>>
>>> route[FINAL_TERM] {
>>> if (lookup("location")) {
>>> if (uri==myself) {
>>> if (!t_newtran()) {
>>> sl_reply_error();
>>> exit;
>>> }
>>> xlog("Destination Not Found ----\n");
>>> t_reply("404","Not Found - destination user not
>>> found on this S-CSCF");
>>> exit;
>>> }
>>>
>>> here lookup(location) means what it means. Could you please help me
>>>
>>>
>>>
>>> Thanks,
>>> Pavithra
>>>
>>> On Thu, May 14, 2020 at 9:59 PM supreeth herle <herlesupreeth at gmail.com>
>>> wrote:
>>>
>>>> Hello Pavithra,
>>>>
>>>> I have written a guide for how to integrate an IMS using Kamailio with
>>>> open5gs EPC, here is the link
>>>> https://open5gs.org/open5gs/docs/tutorial/02-VoLTE-setup/. You can
>>>> find steps to setup rtpengine in that guide.
>>>>
>>>> Regarding requirement of rtpengine, its mandatory if you want to use
>>>> the scripts in that example folder without modification. Also, read the
>>>> READE of sipwise/rtpengine github repo, its very informative (in a gist
>>>> rtpengine offer much more feature than rtpproxy)
>>>>
>>>> why can't we have sip client to sip client rtps flowing like how it is
>>>>> happening without NAT.
>>>>>
>>>>
>>>> For this, i would definitely suggest to read about SIP working. This is
>>>> a perfect link https://github.com/onmyway133/blog/issues/284 which
>>>> offers extensive material (short and very interesting to read with
>>>> examples) related to SIP.
>>>>
>>>> Best Regards,
>>>> Supreeth
>>>>
>>>>
>>>> On Thu, 14 May 2020 at 17:51, Pavithra Mohanraja <
>>>> pavimohan3004 at gmail.com> wrote:
>>>>
>>>>> Hi ,
>>>>>
>>>>> I didn't configure rtpengine ..instead of that only I used
>>>>> rrpproxy..will it not work?
>>>>>
>>>>> If not please tell me how to configure rtpengine and also tell me if
>>>>> it is really madatory .. why can't we have sip client to sip client rtps
>>>>> flowing like how it is happening without NAT.
>>>>>
>>>>> That's my doubt ..please clarify ..
>>>>>
>>>>> Thanks.
>>>>>
>>>>> On Thu, May 14, 2020, 8:57 PM supreeth herle <herlesupreeth at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> HI,
>>>>>>
>>>>>> Hold on a moment,
>>>>>>
>>>>>>
>>>>>>> 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 i assume you are using the examples provided in the ims folder of
>>>>>> kamailio repo right? Isn't it using RTPEngine and not RTPProxy? Or have you
>>>>>> modified the P-CSCF configuration to work with RTPProxy?
>>>>>>
>>>>>> Best regards,
>>>>>> Supreeth
>>>>>>
>>>>>> On Thu, 14 May 2020 at 16:39, Pavithra Mohanraja <
>>>>>> pavimohan3004 at gmail.com> wrote:
>>>>>>
>>>>>>> Hi ,
>>>>>>> I have attached working rtp pcap file. But it is getting reverted
>>>>>>> back to me .
>>>>>>>
>>>>>>> As you said , i have tried restarting rtpproxy several times. but it
>>>>>>> didnt work .
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, May 14, 2020 at 7:11 PM supreeth herle <
>>>>>>> herlesupreeth at gmail.com> wrote:
>>>>>>>
>>>>>>>> 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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>>>>>>>>>>>>>>
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