Google Cloud Windows VM RDP（TCP）端口更改不起作用

Question

In the Google cloud platform, I have windows VM to which I want to make a remote desktop connection, it works if I connect with the default port when a VM is created, but if I change a port to something else (like I tried 3300, 3388) from either cloud console or even from regedit and restarted the instance, RDP stopped working. Any idea?

Answer 1

Did you add the new port to the Firewall rules? Incoming ports are blocked by default, if you want to use a new port you have to add it to the rule below VPC-Networking

Answer 2

In addition to the GCP firewall rule , you would have to open the port from the instance (Windows firewall). I assume you can not access the instance anymore. As such, you can use a startup script by editing the instance and add a metadata key and value.

Similar to this Microsoft blog example , you may use this key “windows-startup-script-ps1” with this Powershell script value

netsh advfirewall firewall add rule name="Open Port  3300" dir=in action=allow protocol=TCP localport= 3300

Then, reboot (reset instance).