What you should pay attention to are Local Addresses that are in the LISTENING state. Open or close ports in Windows 10 Firewall. Sort the list of process by the “PID” column and find the PID associated with the port you’re investigating. If you’re using Windows 8 or 10, switch to the “Details” tab in Task Manager. If you’re using the Microsoft Defender Firewall, and an app requires one or more ports open in order to operate, use these steps: Important: Before proceeding, check the app support documentation to know the ports and protocol type you need to open. As you can see in the previous screenshot, In my Windows 10 computer, port 22 (SSH) is open. Add the port you want to open > click Next. In older versions of Windows, you’ll see this information on the “Processes” tab. This is done using a process whereby network-dependent processes seek out free TCP and UDP ‘ports’ through which they communicate with the Internet. At any one time, there’s a whole bunch of information being sent between your Windows 10 PC and the endless void of the Internet. Navigate to Control Panel, System and Security and Windows Firewall. To view the list of open ports: Open the command line. ; Enter the command; netstat -a. You will need to know what port it uses and the protocol to make this work. Select Advanced settings and highlight Inbound Rules in the left panel 3. The command displays lots of information. As soon as you open the application, you will be shown a user agreement. Navigate to Control Panel, System and Security and Windows Firewall 2. Press Enter on the keyboard. To open a port in the Windows firewall for TCP access In the Rule Type dialog box, select Port, and then click Next. Open firewall ports in Windows 10 You can manually permit a program to access the internet by opening a firewall port. Download TCPView from the Sysinternals website, extract the exe file to your desktop and double-click on it. Open firewall ports in Windows 10 You can manually permit a program to access the internet by opening a firewall port. Right click Inbound Rules and select New Rule 4 Add the port you need to open and click Next 5. Select Specific local ports, and then type the port number of the instance of the Database Engine, In my case we are using the default which is 1433. To check open ports, open a command prompt (or PowerShell) as administrator and run the netstat command as follows: netstat -aon. 1. See this article for instructions. However, after several years, both options continue to coexist in the system. In the Protocol and Ports dialog box, select TCP. You will need to know what port it … 2. Select Allow the connection > hit Next. The list of open ports will be displayed. Open firewall port on Windows 10. Add the protocol (TCP or UDP) and the port number into the next window and click Next. The tool is very similar to CurrPorts. Professor Robert McMillen shows you how to open a port in Windows 10 Firewall. 1. Sysinternals TCPView is a Microsoft tool that makes it easy to view all the TCP connections and ports in use in Windows 10. 1. With the arrival of Windows 10, Microsoft added the new System Settings page, which was supposed to be the one to replace the control panel. Configuring Open Ports in Windows 10 Knowing how to check whether a specific port is open or not can come in handy if you’re troubleshooting a program network connection. Add the TCP or UDP protocol and the port number into the next window > click Next. 2.