If this built-in firewall rule is missing, you can create a new one: You can enable the built-in firewall rule for the Remote Desktop Service running on port TCP/3389 using PowerShell: Enable-NetFirewallRule -DisplayGroup "Remote Desktop" Find the Remote Desktop rule, and make sure it is enabled for Private and Public networks. WINDOWS SERVER 2012 REMOTE DESKTOP SECURITY WINDOWSPress the “Allow an app or feature through Windows Defender Firewall” > Change Settings.To do this, go to the Control Panel > System and Security > Windows Defender Firewall.For example, rdp_server_name1:3320.Īlso, check that the rule which allows incoming RDP connections is enabled in the Windows Defender Firewall settings. If a non-standard port is configured for Remote Desktop on a remote computer, you must specify the port number separated by a colon when connecting to the computer through the Remote Desktop Connection client. In order to check the RDP port on a remote computer, use the Invoke-Command command: Invoke-Command -ComputerName computername1 You can check the current Remote Desktop listening port number using PowerShell: Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -name "PortNumber" If you have a different port, you can change it to 3389 (in decimal), and restart the computer. In our example, this is 3389 (d3d hexadecimal value). It indicates the current TCP port assigned to the RDP service. Note the value of the PortNumber REG_DWORD parameter. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp To check the current port on which the Remote Desktop service is listening on the computer, open the registry editor (regedit.exe), and go to the registry key: In some cases, the administrator can change the RDP port number from default 3389 to something else (although Microsoft does not recommend this). You can perform this action using the services.msc console or with the following command in the elevated PowerShell prompt: get-service TermService| Restart-Service -force -Verbose Check RDP Port and Windows Firewall Settings Try to restart the Remote Desktop Services service. Open a command prompt as administrator, and execute the command: netstat -a -o|find "LIST"Īs you can see, in our example, port 3389 is listening. Use the netstat command to verify if TCP port 3389 is in the Listening state. Set unlimited connections by specifying 999999 in the option RD Maximum Connections allowed A maximum number of RDP connections can be specified in the section Connections using the policy Limit number of connections.
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