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kubernetes and freepbx (alien.top)

submitted 2 years ago by Polnoch@alien.top to c/voip@netheads.online

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I have self-hosted kubernetes cluster, launched on oracle cloud instances.

I want to launch there FreePBX (asterisk distribution). So, I have problems with NAT - sip protocol is terrible to work with NAT.

How can I bypass it? I have two ideas:

create VPN (openvpn??) service in the another container in the same pod with freepbx, so, clients(app on smartphone, hardware phone) will connect to vpn, and than to freepbx
use turn/coturn, something like this: https://github.com/l7mp/stunner

So, client will use turn, and freepbx will use turn as well

But maybe I can just somehow configure SIP protocol for server?

Basically, I have multiple NATs: client > router > external IP > internal IP of oracle cloud > metallb (which uses this internal IP > pod's IP address.

And it kills SIP traffic. It even can't auth :(

Also, I used gomplate template to generate ports for my service (for SIP I need high range of ports for RTP)

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[–] Polnoch@alien.top 1 points 2 years ago

session border controller

Why? It will be the same problem with pure Asterisk.