coturn - coturn

This is a Docker container for a TURN/STUN server. A server like this can be used in a Matrix server configuration. The official container and documentation was made by coturn. This docker-rebuild is made up by a docker-compose.yml file.

Set-up

Create the files rebuild.sh, data/matrix/coturn/turnserver.conf and docker-compose.yml at the same place. Change the settings according to your needs and run ./rebuild.sh afterwards. For the data/matrix/coturn/turnserver.conf file change the values for static-auth-secret, realm, cli-password and external-ip. For the passwords OpenSSL can be used to create a sufficiently random password. The value of external-ip consists of the local IP (left side) and the public IP (right side). To get the local IP the command ip route get 1 can be used. For the public IP the command curl api.ipify.org can be used.

Ports

Set the following ports in the ports: section.

Container Port	Recommended outside port	Protocol	Description
`3478`	`3478`	TCP/UDP	TURN/STUN
`5349`	`5349`	TCP/UDP	TURN/STUN
`49152-65535`	`49152-65535`	UDP	TURN/STUN

rebuild.sh

#!/bin/sh
docker-compose down
docker pull coturn/coturn:latest
docker-compose up -d

docker-compose.yml

version: "2"
services:
  coturn:
    image: "instrumentisto/coturn:latest"
    restart: "unless-stopped"
    volumes:
      - "./data/matrix/coturn/turnserver.conf:/etc/coturn/turnserver.conf"
    ports:
      - "49160-49200:49160-49200/udp"
      - "3478:3478"
      - "5349:5349"

data/matrix/coturn/turnserver.conf

use-auth-secret
static-auth-secret=SomeSecretPasswordForMatrix
realm=matrix.example.com
listening-port=3478
tls-listening-port=5349
min-port=49160
max-port=49200
verbose
allow-loopback-peers
cli-password=SomePasswordForCLI
external-ip=192.168.0.2/123.123.123.123

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