Cant connect to my Debian Server

hello there,

I am desperate right now.
i cannot establish a connection to my debian server.
I created the .ts3server_license_accepted.
nevertheless the server throws me out follows log:

2021-11-04 18: 54: 10.801556 | INFO | ServerLibPriv | | TeamSpeak 3 Server 3.13.6 (2021-06-09 10:22:37)
2021-11-04 18: 54: 10.801730 | INFO | ServerLibPriv | | System information: Linux 4.9.0-16-amd64 # 1 SMP Debian 4.9.272-2 (2021-07-19) x86_64 binary: 64bit
2021-11-04 18: 54: 10.801758 | INFO | ServerLibPriv | | Using hardware aes
2021-11-04 18: 54: 10.802688 | INFO | Database query | | dbPlugin-Name: SQLite3-Plugin, Version 3, © TeamSpeak Systems GmbH
2021-11-04 18: 54: 10.802730 | INFO | Database query | | dbPlugin version: 3.11.1
2021-11-04 18: 54: 10.803131 | INFO | Database query | | Checking the database integrity (may take a while)
2021-11-04 18: 54: 10.847300 | WARNING | Accounting | | License key.dat cannot be opened, relapse to limited functionality
2021-11-04 18: 54: 10.847569 | INFO | Accounting | | License information
2021-11-04 18: 54: 10.847607 | INFO | Accounting | | Licensed for: Anonymous
2021-11-04 18: 54: 10.847632 | INFO | Accounting | | Type: No license
2021-11-04 18: 54: 10.847651 | INFO | Accounting | | Start: Thu 1st Oct 00:00:00 2020
2021-11-04 18: 54: 10.847664 | INFO | Accounting | | End date: Tue 1 Nov 00:00:00 2022
2021-11-04 18: 54: 10.847675 | INFO | Accounting | | max virtual server: 1
2021-11-04 18: 54: 10.847685 | INFO | Accounting | | max. Slots: 32
2021-11-04 18: 54: 11.268478 | INFO | | | Puzzle pre-calculation time: 395
2021-11-04 18: 54: 11.269224 | INFO | File Manager | | listen to 0.0.0.0:30033, [::]: 30033
2021-11-04 18: 54: 11.281037 | INFO | query | | Use a query thread pool size of 2
2021-11-04 18: 54: 11.338483 | INFO | query | | waits for query on 0.0.0.0:10011, [::]: 10011
2021-11-04 18: 54: 11.338817 | INFO | query | | waits for ssh query at 0.0.0.0:10022, [::]: 10022
2021-11-04 18: 54: 11.338955 | INFO | query | | listens to http query at 0.0.0.0:10080, [::]: 10080
2021-11-04 18: 54: 11.339059 | INFO | CIDRManager | | updated query_ip_allowlist IPs: 127.0.0.1/32, :: 1/128,

I try to connect to my external ip but it always gives an error.
can someone help me?
Thanks in advance

You probably have the port closed in the firewall

ufw allow 9987/udp

Try this as root.

Failing that try firewall-cmd --zone=public --add-port=9987/udp

If you don’t have ufw of firewalld on the system then you need to find the equivalent command for “iptables” to open the port.

done it with:

iptables -A INPUT -p udp --dport 9987 -j ACCEPT

but i still get:

2021-11-04 19:53:19.664024|INFO |VirtualServerBase|1 |listening on 0.0.0.0:9987, [::]:9987
[email protected]:~/teamspeak3-server_linux_amd64/logs$ cat ts3server_2021-11-04__19_53_19.023798_0.log
2021-11-04 19:53:19.023899|INFO |ServerLibPriv | |TeamSpeak 3 Server 3.13.6 (2021-06-09 10:22:37)
2021-11-04 19:53:19.024050|INFO |ServerLibPriv | |SystemInformation: Linux 4.9.0-16-amd64 #1 SMP Debian 4.9.272-2 (2021-07-19) x86_64 Binary: 64bit
2021-11-04 19:53:19.024088|INFO |ServerLibPriv | |Using hardware aes
2021-11-04 19:53:19.024874|INFO |DatabaseQuery | |dbPlugin name: SQLite3 plugin, Version 3, ©TeamSpeak Systems GmbH
2021-11-04 19:53:19.024908|INFO |DatabaseQuery | |dbPlugin version: 3.11.1
2021-11-04 19:53:19.025255|INFO |DatabaseQuery | |checking database integrity (may take a while)
2021-11-04 19:53:19.085244|WARNING |Accounting | |Unable to open licensekey.dat, falling back to limited functionality
2021-11-04 19:53:19.085643|INFO |Accounting | |Licensing Information
2021-11-04 19:53:19.085689|INFO |Accounting | |licensed to : Anonymous
2021-11-04 19:53:19.085719|INFO |Accounting | |type : No License
2021-11-04 19:53:19.085750|INFO |Accounting | |starting date : Thu Oct 1 00:00:00 2020
2021-11-04 19:53:19.085766|INFO |Accounting | |ending date : Tue Nov 1 00:00:00 2022
2021-11-04 19:53:19.085801|INFO |Accounting | |max virtualservers: 1
2021-11-04 19:53:19.085813|INFO |Accounting | |max slots : 32
2021-11-04 19:53:19.598092|INFO | | |Puzzle precompute time: 486
2021-11-04 19:53:19.598799|INFO |FileManager | |listening on 0.0.0.0:30033, [::]:30033
2021-11-04 19:53:19.609236|INFO |Query | |Using a query thread pool size of 2
2021-11-04 19:53:19.664395|INFO |Query | |listening for query on 0.0.0.0:10011, [::]:10011
2021-11-04 19:53:19.664723|INFO |Query | |listening for ssh query on 0.0.0.0:10022, [::]:10022
2021-11-04 19:53:19.664857|INFO |Query | |listening for http query on 0.0.0.0:10080, [::]:10080
2021-11-04 19:53:19.664951|INFO |CIDRManager | |updated query_ip_allowlist ips: 127.0.0.1/32, ::1/128,

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