Windows 11 Open Ports ((hot)) -

Connection-oriented. It ensures all data packets arrive accurately and in order (e.g., web browsing, email).

Disable legacy network protocols that are frequent vectors for ransomware exploits, such as SMBv1 (Port 139/445).

New-NetFirewallRule -DisplayName "MyAppPort" -Direction Inbound -Action Allow -Protocol TCP -LocalPort 12345 windows 11 open ports

PowerShell offers a more modern, scriptable way to examine network connections on Windows 11. The Get-NetTCPConnection cmdlet provides cleaner output and better filtering capabilities than the traditional netstat command.

opening these ports on Public network profiles: RDP (3389), SMB (445, 139), NetBIOS (137-138), or any remote management ports. If remote access is necessary, use a VPN or modern secure remote access solution like Microsoft Remote Desktop Gateway. Connection-oriented

In this guide, we’ll walk you through how to check for open ports in Windows 11, identify which apps are using them, and how to close them to harden your security.

Closing unnecessary ports reduces your attack surface. There are three primary approaches: If remote access is necessary, use a VPN

To bridge this gap, you must configure on your router:

Connection-oriented. It ensures all data packets arrive accurately and in order (e.g., web browsing, email).

Disable legacy network protocols that are frequent vectors for ransomware exploits, such as SMBv1 (Port 139/445).

New-NetFirewallRule -DisplayName "MyAppPort" -Direction Inbound -Action Allow -Protocol TCP -LocalPort 12345

In this guide, we’ll walk you through how to check for open ports in Windows 11, identify which apps are using them, and how to close them to harden your security.

Closing unnecessary ports reduces your attack surface. There are three primary approaches:

To bridge this gap, you must configure on your router: