Hello damencho, thanks for your reply.
I already followed this guide, but I still don’t know what is configured wrong.
The “Jitsi Meet”-server is not behind NAT, it has an own public IPv4-address.
How do I have to configure the following options in this case?
The Ubuntu-machine has only the loopback-interface “lo” and “eth0”. “eth0” has the public IPv4-address.
At the moment there are no firewall-rules active on the “Jitsi Meet”-server,
so all TCP/UDP-ports are open.
In the “/etc/hosts”-file I added the following line:
PUBLIC-IP-OF-JITSI-MEET-SERVER jitsi.MYDOMAIN jitsi
Of course there is the public IPv4-address instead of “PUBLIC-IP-OF-JITSI-MEET-SERVER” in the hosts-file. And of course there is my real domain instead of “MYDOMAIN” in the hosts-file.
On the client-side there is no firewall active, tool. The client is directly connected to a FritzBox with a dsl-connection.
Do I need to configure the option “org.ice4j.ice.harvest.STUN_MAPPING_HARVESTER_ADDRESSES”?