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by markisus 449 days ago
I’m not sure what you mean by fingerprinting and supported protocols. None of that would be present inherently in a UDP stream unless the application included it. As for hiding IP address, that is a valid use case for a TURN server but I’m guessing 99% of TURN server usage occurs only because the NAT hole punch failed.
1 comments
VWWHFSfQ 449 days ago
> by fingerprinting and supported protocols. None of that would be present inherently in a UDP stream unless the application included it.

Much like TLS, both clients offer all the protocols, versions, and media encodings that they support so that they can find a common set that they can use together.

This is standard negotiation when establishing connections in WebRTC and it's obviously fingerprintable information.

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markisus 448 days ago
You’re talking about WebRTC which may or may not make use of a TURN server. And I assume there are other uses of TURN which are completely unrelated to WebRTC.

Use of a TURN server does not imply hiding of negotiation details. The TURN RFC [1] does not mention anything related to media encodings or WebRTC negotiations at all.

[1] https://datatracker.ietf.org/doc/html/rfc5766

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