====== Установка TURN ======
  - Уставим TURN, что бы у клиентов из-за NAT не было проблем с конференциями видео и аудио <code bash>apt install coturn pwgen</code>
  - Генерируем секретный ключ <code bash>pwgen -s 64 1</code>\\ сохранить код в блокнот.
  - Правим конфиг <code bash>nano /etc/turnserver.conf</code>
  - Втыкаем <code bash>use-auth-secret
static-auth-secret=ВАШ КОД который нагерели шаг назад
realm=ваш домен

# VoIP traffic is all UDP. There is no reason to let users connect to arbitrary TCP endpoints via the relay.
no-tcp-relay

# 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

# special case the turn server itself so that client->TURN->TURN->client flows work
allowed-peer-ip=10.0.0.1

# 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</code>
  - Включаем TURN <code bash>nano /etc/default/coturn</code>
  - Раскоментируйте <code bash>TURNSERVER_ENABLED=1</code> 
  - Рестарт <code bash>/etc/init.d/coturn restart</code>
