How to open a port in windows 7 using cmd

The following section presents the list of equipment used to create this tutorial. As an Amazon Associate, I earn from qualifying purchases. Windows Related Tutorial:.

On this page, we offer quick access to a list of tutorials related to Windows. List of Tutorials. Copy to Clipboard. Create a firewall rule to allow the input to multiple TCP ports. In our example, we created a firewall rule to open multiple TCP ports using the command-line. Related Posts. January 4th, September 2nd, August 2nd, July 30th, July 29th, July 13th, July 11th, July 10th, July 8th, July 7th, This website uses cookies and third party services.

In the Windows Defender Firewall with Advanced Security , there has to be a corresponding inbound firewall rule to match the listening port Anything with a green checkmark is an open rule. To check that the port is open from a remote computer, an administrator can run the telnet command from a remote computer against the IP address of the Windows computer.

For example, to check if port 22 is open, I will run the telnet command from a remote computer as follows:. Administrators can use the findstr CMD command which is similar to grep to filter netstat command data based on string patterns. Real-time network monitoring - In the following example, we set a 5 second time interval to check active network connections in real-time. You can also put an IP address instead of the name.

You should replace 80 with you desired port number. You can also put an IP address instead of the host name. You can specify the port number using the -port switch at the end of tnc command. The TNC command will give you basic information about the network connection like computer name, IP address, Interface through which you are connecting, source IP, whether the ping is successful or not, Ping reply time and finally TcpTestSucceeded.

TcpTestSucceeded will give you True if the port is open and false if the port is closed. These commands and techniques are very useful when you are troubleshooting a network.

Please let us know if this has been useful for you in the comments below and we will add more troubleshooting techniques in future.