to get it finally tested, installed again on the dev.machine and placed this online.
System installed: openfire4.6.0, pade plugins 1.2.1 (the only ones installed), focus & jvb user online. All default settings with some users created.
System is behind firewall with NAT, port-forwarded: 7443/tcp, 10000-15000/udp to the openfire machine.
Users are using Chrome 87 (latet version just installed) or Firefox 84 & 78
Meeting consists of 2 users only, they can see only themselves, means from the other user there is only the gray screen with the letter symbol.
enabling websockets will break the connection. The initialization of the room will break directly.
Mentioned ports are open ae natted in & opened to the outside.
Dev. machine is running Debian 10/64 with Java 11
Any more ideas what could be hindering ?
I was able to get it working, means all users can see each other now.
Found an old thread here in the forum and this got it solved:
In admin console
Server > Mettings > Networking
Set your NIC
Set your IP
Websockets: disabled
IP Adress Mapping: did not use Amazon = Disabled Local Adress: machine IP Public Address: your Public
This entry solved it for me, as the server is natted