Coturn working

servers/coturn/turnserver.conf

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+realm=coturn.ellis.link 
+min-port=60006 
+max-port=65535 
+use-auth-secret 
+static-auth-secret=qjRh55G51K7V0ZqB7Z8ZEkxZjBLJMgkwEs8acFjx
+listening-ip=0.0.0.0
+
+#public ipv4 and ipv6 addresses
+external-ip=213.32.25.24
+external-ip=2001:41d0:1004:3918::1
+# VoIP traffic is all UDP. There is no reason to let users connect to arbitrary TCP endpoints via the relay.
+no-tcp-relay
+
+cert=/data/certs/coturn.ellis.link/cert.pem
+# TLS private key file
+pkey=/data/certs/coturn.ellis.link/key.pem
+
+# 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
+
+# special case the turn server itself so that client->TURN->TURN->client flows work
+# this should be one of the turn server's listening IPs
+allowed-peer-ip=0.0.0.0
+
+# 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