Windows 11 Open Ports Verified
: The best visual tool for identifying which specific apps are using which ports. 1. Using PowerShell (Recommended)
Click on in the left sidebar, then click New Rule... in the right-hand Actions pane. In the Rule Type step, select Port and click Next . Select the appropriate protocol: TCP or UDP . windows 11 open ports
Think of your computer’s IP address as a building, and ports as the numbered doors into that building. : The best visual tool for identifying which
Ransomware and trojans often target unpatched services listening on vulnerable ports. in the right-hand Actions pane
: Keep Domain, Private, and Public checked unless you want to limit the rule to specific networks .
After reviewing your open ports, any port that is "Listening" but not recognized should be investigated. Common ports like (HTTP), 443 (HTTPS), and 53 (DNS) are standard, but random high-number ports could indicate a background service or, in some cases, unauthorized software.
Be careful with this command—only terminate processes if you're absolutely certain they aren't critical to system operation.