Tutorial : How to make matrix-synapse's coturn (audio & video calls) work behind a VPN

I think I have found a workaround to this problem.

When YH is started or rebooted:

  1. stop yunohost-firewall
  2. start coturn-synapse (if not started) or restart
  3. start yunohost-firewall

It looks like this also works:

  1. start coturn-synapse (if not started) or restart
  2. stop yunohost-firewall
  3. start yunohost-firewall

Someone who has any idea why this works?

edit: restart yunohost-firewall seems not to work.

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