Matrix

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The secure messaging protocol.

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Is it possible to use Matrix purely over Tor? (piefed.social)

submitted 1 day ago by Arda@piefed.social to c/matrix@programming.dev

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Could you host a matrix server using only the Tor network? If so it would make it possible to have a communication tool thats not only encrypted but anonymous, I assume much would have to be changed and maybe federations wouldn't work at all but would it be theoretically possible?

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[–] stratself 3 points 1 day ago

Yes and federation works. The caveat is that since Matrix s2s de facto mandates TLS certs, you'll need to use self-signed certs as well as accept them from other onion peers. I've been aware of some more involved setups where a server name on the clearnet can be manually mapped to its Tor onionsite as well.

Beyond that, c2s is just a simple HTTP service, and most clients should support it assuming they have a way to hop on Tor (Orbot, SOCKS5 proxy etc)