Teamspeak not longer reachable with active firewall

HeeroYuy

Member
Jan 18, 2023
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Help!
I have TS3 running on a lxc. I can connect to the TS3 server locally and externally as long as the container's firewall is deactivated.
There are two security groups added:
1. webserver
- accepts incoming HTTP and HTTPS (80 and 443) and also SSH (22); no source port, no destination or source IP
2. teamspeak
- accepts incomfing 9987 UDP, 10011 TCP, 30033 TCP and 41144 TCP; no source port, no destination or source IP

After activating the firewall for this container, I can connect via SSH like before. But connecting the server fails (locally with direct IP and externally with domain). In both cases with port and w/o port > 192.168.1.20:9987 / 192.168.1.20 or example.com:9987 / example.com

Its definitely a proxmox firewall problem but I have absolutely no idea, what is going on here. There are no other ports required as far as I know.
 
yeeah... lol... Firewall rule "teamspeak3" != "Teamspeak3".
I have no idea, where the upper case T comes from because I entered the group policy with "t". Now its working :rolleyes: