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@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

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On Thu, Dec 17, 2020 at 12:15 PM Sergey Safarov <s.safarov@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@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@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?

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Regards,

David Villasmil

email: david.villasmil.work@gmail.com

phone: +34669448337

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