netstat -ano | findstr “:53”

Product:

Planning Analytics Workspace

Microsoft Windows 2022 server

Issue:

Check if port is used by docker or other process?

Solution:

On the PAW server login and start the CMD prompt;

Enter below to check if port 53 (default port for docker is used)

 netstat -ano | findstr ":53"

the ‘LISTENING’ status means it’s in use, and the PID (Process ID) shows which application, which you then check with tasklist /fi “PID eq [PID_number]” to identify the service.

 

Ensure that all ports in paw.ps1 file is open in the local firewall on the PAW server to ensure smooth operation.

More information:

https://learn.microsoft.com/en-us/windows-server/networking/dns/network-ports

https://simpledns.plus/kb/47-error-message-could-not-start-dns-service-on-ip-address-port-53-udp-port-is-used

https://kb.synology.com/en-global/DSM/tutorial/Whether_TCP_port_is_open_or_closed

https://www.ninjaone.com/blog/how-to-find-dns-servers-used-in-windows-11/