Windows 11 Open Ports Verified Jun 2026

This shows you a clean table with Local Address, Local Port, Remote Address, Remote Port, State, Owning Process (by PID), and more.

Unexpected open ports can signify malware or compromised background services. Regularly run netstat -ano and examine LISTENING ports for unfamiliar executables. windows 11 open ports

New-NetFirewallRule -DisplayName "Block port 445" ` -Direction Inbound ` -LocalPort 445 ` -Protocol TCP ` -Action Block This shows you a clean table with Local

Discovering that a port is open is only half the battle; you must determine which application opened it to ensure it is legitimate. Owning Process (by PID)

To delete a rule via command line:

Get-NetTCPConnection -State Listen