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Is it feasible to run a TURN server behind NAT? (lemmy.ca)

submitted 7 months ago* (last edited 7 months ago) by hackysphere@lemmy.ca to c/selfhosted@lemmy.world

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I am running a defederated local Matrix server, and I need to set up calls. From what I can tell, the "legacy" calls require a STUN and TURN server, and the new MatrixRTC standard seems to require them as well for Livekit to work. However, I do not want to expose anything out to the public internet, as I want everything to be behind NAT for local access only (all of the clients for the server will also be behind the NATted network). I also have Tailscale running on my servers, and it would be useful if I would be able to connect to the TURN server even when not in the network. Is there a way to get STUN/TURN to work in this situation? It seems that all the servers expect to have public network access.

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[–] LodeMike@lemmy.today 7 points 7 months ago (1 children)

The turn server must be able to access other nodes on the Internet and vice versa unless operating exclusively within your local matrix server.

[–] hackysphere@lemmy.ca 1 points 7 months ago

Oops, autocorrect seems to have messed up some of my words. All of the clients that connect to the servers are behind the same NATted network, and some are behind an additional level of NAT.