Comment 2 for bug 1875370

I also ran into this issue - but setting "AmbientCapabilities=CAP_NET_BIND_SERVICE" in the service section of either an override file under /etc/systemd/system/coturn.service.d/override.conf or directly in coturn.service doesn't work.

I've also tried to use `/sbin/setcap 'cap_net_bind_service=+ep' /usr/bin/turnserver` to allow turnserver to listen on port 443 as non-root, but that didn't work either...