File turnserver.firewalld of Package coturn
<?xml version="1.0" encoding="utf-8"?>
<service>
<short>TURN</short>
<description>TURN and STUN server ports for VoIP. Actually, "plain" TCP and UDP sessions can connect to the TLS and DTLS port(s), too - if allowed by configuration. The TURN server automatically recognizes the type of traffic. Actually, two listening endpoints (the plain one and the tls one) are equivalent in terms of functionality; but we keep both endpoints to satisfy the RFC 5766 specs.</description>
<port protocol="tcp" port="3478"/>
<port protocol="udp" port="3478"/>
<port protocol="tcp" port="5349"/>
<port protocol="udp" port="5349"/>
</service>