Windows PowerShell
You can also use Windows PowerShell to check open TCP/IP ports. To do this, use the Get-NetTCPConnection cmdlet, which allows you to view a list of active TCP/IP connections and the local and remote addresses and ports being used. For example, you can run the following command to view a list of all active TCP/IP connections:
Get-NetTCPConnection | Select-Object LocalAddress, LocalPort, RemoteAddress, RemotePort
Get-NetTCPConnection cmdlet
How To Check Open TCP/IP Ports in Windows?
Certain apps and processes in Windows 10 can cause problems if you’re not properly connected to the internet. Firewalls can cause these connection issues when they cannot determine whether incoming and outgoing connections pose a threat. Work around this issue and open ports for incoming and outgoing connections. We will know to check whether a TCP port is open or closed on the Windows operating system.
Basically, many times we need to check the port status when any of the below issues results in closing the port.
- They may not be properly working.
- External IP addresses that are in use may be set to private IPs.
- Firewall rules may block the network.
There are several ways to check open TCP/IP ports in Windows. Here are a few options:
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