listening-port={{ ports['coturn_listening'] }} tls-listening-port={{ ports['coturn_tls_listening'] }} # Lower and upper bounds of the UDP relay endpoints: # (default values are 49152 and 65535) min-port={{ ports['coturn_relay_min'] }} max-port={{ ports['coturn_relay_max'] }} #verbose fingerprint # Credentials in secrets.conf (static-auth-secret) use-auth-secret static-auth-secret={{ coturn_secrets['static_auth_secret'] }} realm=turn.{{ domain }} # TLS certificates, including intermediate certs. # For Let's Encrypt certificates, use `fullchain.pem` here. cert=/etc/coturn/cert.pem # TLS private key file pkey=/etc/coturn/pkey.pem # Do not allow an TLS/DTLS version of protocol no-tlsv1 no-tlsv1_1 # Disable RFC5780 (NAT behavior discovery). no-rfc5780 no-stun-backward-compatibility response-origin-only-with-rfc5780 no-cli # VoIP traffic is all UDP. There is no reason to let users connect to arbitrary TCP endpoints via the relay. no-tcp-relay # consider whether you want to limit the quota of relayed streams per user (or total) to avoid risk of DoS. user-quota=12 # 4 streams per video call, so 12 streams = 3 simultaneous relayed calls per user. total-quota=1200 # don't let the relay ever try to connect to private IP address ranges within your network (if any) # given the turn server is likely behind your firewall, remember to include any privileged public IPs too. denied-peer-ip=10.0.0.0-10.255.255.255 denied-peer-ip=192.168.0.0-192.168.255.255 denied-peer-ip=172.16.0.0-172.31.255.255 # recommended additional local peers to block, to mitigate external access to internal services. # https://www.rtcsec.com/article/slack-webrtc-turn-compromise-and-bug-bounty/#how-to-fix-an-open-turn-relay-to-address-this-vulnerability no-multicast-peers denied-peer-ip=0.0.0.0-0.255.255.255 denied-peer-ip=100.64.0.0-100.127.255.255 denied-peer-ip=127.0.0.0-127.255.255.255 denied-peer-ip=169.254.0.0-169.254.255.255 denied-peer-ip=192.0.0.0-192.0.0.255 denied-peer-ip=192.0.2.0-192.0.2.255 denied-peer-ip=192.88.99.0-192.88.99.255 denied-peer-ip=198.18.0.0-198.19.255.255 denied-peer-ip=198.51.100.0-198.51.100.255 denied-peer-ip=203.0.113.0-203.0.113.255 denied-peer-ip=240.0.0.0-255.255.255.255 denied-peer-ip=::1 denied-peer-ip=64:ff9b::-64:ff9b::ffff:ffff denied-peer-ip=::ffff:0.0.0.0-::ffff:255.255.255.255 denied-peer-ip=100::-100::ffff:ffff:ffff:ffff denied-peer-ip=2001::-2001:1ff:ffff:ffff:ffff:ffff:ffff:ffff denied-peer-ip=2002::-2002:ffff:ffff:ffff:ffff:ffff:ffff:ffff denied-peer-ip=fc00::-fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff denied-peer-ip=fe80::-febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff