Windows 11 Open Ports Guide

Understanding and Managing Open Ports in Windows 11

Windows 11 is more secure than previous versions (thanks to features like Virtualization-Based Security and Credential Guard), but open ports remain a liability.

Open Advanced Security

: Search for "Windows Defender Firewall with Advanced Security" in the Start menu or find it under Settings > Privacy & security > Windows Security > Firewall & network protection > Advanced settings . windows 11 open ports

Then correlate OwningProcess with process: Understanding and Managing Open Ports in Windows 11

To ensure your Windows 11 device is secure and protected, follow these best practices: If the port is opened by a specific

• If the port is opened by a specific third-party app (like a game server or torrent client), simply closing the application will usually close the port.
• If it is a Windows Service, you can disable the service via services.msc, though be cautious not to disable critical system services.

For remote checking: Test-NetConnection -ComputerName remote-pc -Port 3389

• CurrPorts (by NirSoft): Portable, shows opened ports, associated processes, and allows you to close connections instantly.
• TCPView (Microsoft Sysinternals): A GUI version of netstat with dynamic updates.

• Disable router port forwarding for unused services; tighten NAT/firewall rules.