I have set up a new server on Ubuntu 20.04 (64bit) VPS following this tutorial:

Everything was right during the installation. The teamspeak.service is running (both systemctl service and the ts3 process "./ts3server inifile=ts3server.ini daemon=1 pid_file=ts3server.pid" are showing as running).

Server is ran by 'teamspeak' user and the folder belongs to him as well. 'ts3server.pid', '.ts3server_license_accepted', 'ts3server' and all other necessary files are present in '/home/teamspeak' folder.

Logs don't show any errors, only the licensekey.dat warning.

All required ports are open. Tried with disabled firewall. Tried with disabled firewall on my PC. Had a friend try to join. Nothing helps really. I ran tcpdump command listening to incoming connections on port 9987 - when I tried to join the server, it indeed received several udp packets coming from my IP.

Tried rebooting, restarting service, upgrading, autoremoving, cleaning. Is it rather issue related to my machine? Or is there something else I should check?

3

1 Answer

I found the reason of this issue. I have Webmin+Virtualmin installed, and didn't realize it's firewalld package was installed and set up.

This did the trick for me:

sudo firewall-cmd --add-port=9987/udp

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