TURN Server

Talk works correctly only in the same network. To work with multiple client behind NAT, TURN server is required.

Official NC HowTo for installing TURN server: https://help.nextcloud.com/t/howto-setup-nextcloud-talk-with-turn-server/30794

Dockers with coTURN server:

• https://github.com/coturn/coturn/tree/master/docker

• https://github.com/instrumentisto/coturn-docker-image
• https://hub.docker.com/r/monogramm/docker-coturn
  • https://github.com/Monogramm/docker-coturn
  • lightweight fork using alpine and latest coturn (master branch) like instrumentisto/coturn-docker-image

• https://hub.docker.com/r/cybergatelabs/coturn
  • simple Debian Buster + coturn package: https://hub.docker.com/r/cybergatelabs/coturn/dockerfile
  • Blog howto: https://mach5.web.id/2020/04/nextcloud-series-part-2-nextcloud-talk-turn-stun-server/

Online verificator for public TURN server:

• https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/

Some found HOWTOs:

• https://docs.bigbluebutton.org/2.2/setup-turn-server.html
• https://meetrix.io/blog/webrtc/turnserver/long_term_cred.html
• https://github.com/spreedbox/spreedbox/wiki/Use-TURN-server
• https://www.netways.de/blog/2017/08/16/setting-up-a-turn-server-for-nextcloud-video-calls/

• Default TCP/UDP 3478 (can be set to 80)
• Default TLS/DTLS is 5349 (can be set to 443)
• Receiving UDP ports: 49152-65535

    --min-port Lower bound of the UDP port range for relay endpoints allocation. Default value is 49152, according to RFC 5766.
    --max-port Upper bound of the UDP port range for relay endpoints allocation. Default value is 65535, according to RFC 5766.