2026-08-18 22:17:44 +03:00
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# coturn TURN/STUN server for XMPP Jingle audio/video calls
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#
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# Credentials are NOT stored here. Prosody's mod_turn_external mints
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# time-limited credentials using the shared secret (see static-auth-secret),
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# and hands them to clients over XEP-0215. Keep the secret in sync between
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# this file and TURN_SECRET in .env.
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# Listening sockets. The container runs with network_mode: host, so these
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# bind directly to the server's public interface.
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listening-port=3478
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tls-listening-port=5349
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2026-08-18 22:20:37 +03:00
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# Pin both the listening and relay addresses to the public interface.
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# Without these, coturn auto-discovers every interface and hands out relay
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# candidates on the Docker bridges (172.x, 192.168.x) and loopback, which
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# remote peers cannot reach and which needlessly expose internal networks.
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listening-ip=176.124.216.197
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relay-ip=176.124.216.197
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2026-08-18 22:17:44 +03:00
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# Public address advertised in relay candidates. Without this, coturn hands
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# out its own view of the interface address, which breaks behind any NAT.
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external-ip=176.124.216.197
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# Relay port range. Each concurrent call leg consumes a port from this range.
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min-port=49160
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max-port=49200
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# Authentication: long-term credentials derived from a shared secret
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# (REST API / TURN time-limited credentials, as used by XEP-0215).
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use-auth-secret
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static-auth-secret=e7b94c2d2af838f332a2173a5318a336bdf3cfdb812e5842266d5cd6e6e31d60
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realm=guschin.info
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# TLS for turns:. Uses the existing multi-SAN guschin.info certificate, which
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# is why the advertised TURN host is guschin.info and not turn.guschin.info
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# (the latter is not in the cert's SANs, so TLS validation would fail).
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2026-08-18 22:20:37 +03:00
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cert=/etc/letsencrypt/live/guschin.info/fullchain.pem
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pkey=/etc/letsencrypt/live/guschin.info/privkey.pem
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2026-08-18 22:17:44 +03:00
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# Harden: this is a relay for our own users, not an open proxy.
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# Deny relaying to private ranges so TURN can't be used to reach internal
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# services (loopback, RFC1918, link-local, CGNAT, multicast).
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no-multicast-peers
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denied-peer-ip=0.0.0.0-0.255.255.255
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denied-peer-ip=10.0.0.0-10.255.255.255
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denied-peer-ip=100.64.0.0-100.127.255.255
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denied-peer-ip=127.0.0.0-127.255.255.255
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denied-peer-ip=169.254.0.0-169.254.255.255
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denied-peer-ip=172.16.0.0-172.31.255.255
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denied-peer-ip=192.0.0.0-192.0.0.255
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denied-peer-ip=192.168.0.0-192.168.255.255
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denied-peer-ip=198.18.0.0-198.19.255.255
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denied-peer-ip=240.0.0.0-255.255.255.255
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denied-peer-ip=::1
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denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
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denied-peer-ip=fe80::-febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff
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# No TURN-over-plain-old-CLI admin interface, no SQLite/Redis state.
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no-cli
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# Disable legacy/weak mechanisms.
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no-tlsv1
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no-tlsv1_1
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# Per-user relay caps, to limit the blast radius of a leaked credential.
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user-quota=12
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total-quota=1200
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# Logging to stdout so `docker logs coturn` works.
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log-file=stdout
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simple-log
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