Kamailio RTP proxy require? - sr-users

David Villasmil

17 Dec 17 Dec

4:14 p.m.

It’s totally fine. Rtpengine is mainly used to also proxy rtp ie: public to private, etc. But if your asterisk is public, rtps will reach it, and you’re fine with it, go ahead On Thu, 17 Dec 2020 at 11:10, Mihai Cezar <cezar(a)mokalife.ro> wrote:

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Hi, Can't figure it out when to use RTPproxy, i am forwarding everything to asterisk in seem to work without RTPproxy. The scenario is like this: Softphone -> INTERNET -> Kamailio - > Asterisk (private ip) Now it seems to work without any rtpproxy but is it ok? _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337

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Sergey Safarov

4:32 p.m.

Try to make a call to the device behind double NAT (home WiFi router + carrier NAT). On Thu, Dec 17, 2020 at 2:09 PM Mihai Cezar <cezar(a)mokalife.ro> wrote:

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Hi, Can't figure it out when to use RTPproxy, i am forwarding everything to asterisk in seem to work without RTPproxy. The scenario is like this: Softphone -> INTERNET -> Kamailio - > Asterisk (private ip) Now it seems to work without any rtpproxy but is it ok? _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

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Sergio Charrua

5:28 p.m.

Another example of when to use RTPProxy / RTPEngine is: SIP user -> router -> INTERNET -> router / firewall -> Kamailio (private IP) -> Asterisk (private IP) Apart from the routers, all other equipments are private IPs, hence being NATed and requiring RTP Proxy / RTP Engine to forward RTP streams to the correct ports. As David Vilasmil points out, security wise, this is the best approach.... but it is a PITA configuring and making all the services work correctly. *Sérgio Charrua* *www.voip.pt <http://www.voip.pt/>* Tel.: +351 <callto:+351+91+104+12+66>21 130 71 77 Email : *sergio.charrua(a)voip.pt <sergio.charrua(a)voip.pt>* This message and any files or documents attached are strictly confidential or otherwise legally protected. It is intended only for the individual or entity named. If you are not the named addressee or have received this email in error, please inform the sender immediately, delete it from your system and do not copy or disclose it or its contents or use it for any purpose. Please also note that transmission cannot be guaranteed to be secure or error-free. On Thu, Dec 17, 2020 at 12:15 PM Sergey Safarov <s.safarov(a)gmail.com> wrote:

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yes, if your asterisk has statically assigned (NAT-ed) public IP, then you do not need RTPproxy. RTP proxy required when both sides of the call do not have statically assigned (NAT-ed) public IP. On Thu, Dec 17, 2020 at 2:33 PM David Villasmil < david.villasmil.work(a)gmail.com> wrote:

It’s totally fine. Rtpengine is mainly used to also proxy rtp ie: public to private, etc. But if your asterisk is public, rtps will reach it, and you’re fine with it, go ahead On Thu, 17 Dec 2020 at 11:10, Mihai Cezar <cezar(a)mokalife.ro> wrote:

Hi, Can't figure it out when to use RTPproxy, i am forwarding everything to asterisk in seem to work without RTPproxy. The scenario is like this: Softphone -> INTERNET -> Kamailio - > Asterisk (private ip) Now it seems to work without any rtpproxy but is it ok? _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337 _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

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David Villasmil

6:58 p.m.

This might help you as a starting point. https://github.com/davidcsi/kamailio-private-public Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337 On Thu, Dec 17, 2020 at 1:20 PM Mihai Cezar <cezar(a)mokalife.ro> wrote:

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I do have kamailio an public IP and another nic with private IP that connects to the Asterisk LAN. @Sergey I tried that scenario with double NAT, and, it work it. If i choose to go rtpproxy which modules should i load (nat_helper, nat_traversal, rtpproxy) ? On Thu, Dec 17, 2020 at 2:38 PM Sergio Charrua <sergio.charrua(a)voip.pt> wrote:

Another example of when to use RTPProxy / RTPEngine is: SIP user -> router -> INTERNET -> router / firewall -> Kamailio (private IP) -> Asterisk (private IP) Apart from the routers, all other equipments are private IPs, hence being NATed and requiring RTP Proxy / RTP Engine to forward RTP streams to the correct ports. As David Vilasmil points out, security wise, this is the best approach.... but it is a PITA configuring and making all the services work correctly. *Sérgio Charrua* *www.voip.pt <http://www.voip.pt/>* Tel.: +351 <callto:+351+91+104+12+66>21 130 71 77 Email : *sergio.charrua(a)voip.pt <sergio.charrua(a)voip.pt>* This message and any files or documents attached are strictly confidential or otherwise legally protected. It is intended only for the individual or entity named. If you are not the named addressee or have received this email in error, please inform the sender immediately, delete it from your system and do not copy or disclose it or its contents or use it for any purpose. Please also note that transmission cannot be guaranteed to be secure or error-free. On Thu, Dec 17, 2020 at 12:15 PM Sergey Safarov <s.safarov(a)gmail.com> wrote:

yes, if your asterisk has statically assigned (NAT-ed) public IP, then you do not need RTPproxy. RTP proxy required when both sides of the call do not have statically assigned (NAT-ed) public IP. On Thu, Dec 17, 2020 at 2:33 PM David Villasmil < david.villasmil.work(a)gmail.com> wrote:

It’s totally fine. Rtpengine is mainly used to also proxy rtp ie: public to private, etc. But if your asterisk is public, rtps will reach it, and you’re fine with it, go ahead On Thu, 17 Dec 2020 at 11:10, Mihai Cezar <cezar(a)mokalife.ro> wrote: > Hi, > > Can't figure it out when to use RTPproxy, i am forwarding everything > to asterisk in seem to work without RTPproxy. > > The scenario is like this: > Softphone -> INTERNET -> Kamailio - > Asterisk (private ip) > > Now it seems to work without any rtpproxy but is it ok? > > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users(a)lists.kamailio.org > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > -- Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337 _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

_______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

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Richard Fuchs

7:30 p.m.

On 17/12/2020 09.00, Sergio Charrua wrote:

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Personally I use NATHelper and RTPEngine modules RTPEngine, afaik, is the latest and upgraded version of RTPProxy (please, anyone correct me if that is not the case)

They serve a similar purpose, but they're unrelated products and rtpengine is not based on rtpproxy at all. Cheers

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