How to setup remote desktop to a 2nd computer ? (What am i doing wrong?)

Question

I currently have 3 desktops: A, B, and C

I connected remotely from desktop A into C by entering desktop Cs ipv4 address into "computer" and it's device name into "username" on laptop A's remote connection. I also forwarded port 3389 to C's IP. This worked perfectly.

Now with A and C disconnected, I want to remote into B from A. I have changed the port in B's registry to 3390, forwarded 3390 to B's ipv4 and added a rule allowing port 3390 through the fire wall. I then try connecting using desktop B's IP and device name same way I did for C but this time it doesn't work. What am I doing wrong?

Remote desktop is turned on for all 3 desktops

Answer 1

Hello,

If I understand your issue correctly, are ABC located in three different networks?

Here are a few things to consider:

First verify the port number is changed correctly by using powershell command: Get-ItemProperty -path 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -name "PortNumber"

Then check if the RDP service on desktop B is listening on the new port (3390) using the command: netstat -ano | findstr :<YourPortNumber> on B.

Perform a telnet test from desktop A to confirm network connectivity to the RDP port on desktop B: telnet <desktop B's IP address> 3390. If the command window stays blank, your remote machine is listening on that port.

The firewall rule on desktop B allows traffic on port 3390 is inbound rule named "Remote Desktop - User Mode (TCP-In)" with the custom port 3390.

If RDP port has been changed then RDP to computer using specified port.

Format: <computer name>:3390, or <desktop B's IP address>:3390

Regards,

Karlie