In PowerShell, you can call native APIs for raw performance:
Port forwarding allows external devices to access a specific service on your Windows 11 machine. This is distinct from opening ports in your firewall—port forwarding is typically configured on your router, directing incoming traffic to your computer's local IP address.
To open a TCP port from Command Prompt:
Opening a port in the Windows 11 firewall only permits traffic to pass through the operating system level. If your computer sits behind a local Wi-Fi router, the router's hardware firewall will still block external incoming traffic from the wider internet.
: These are associated with an older networking protocol that's considered vulnerable to various attacks. Exposing these ports publicly can significantly increase your system's risk of unauthorized access. windows 11 open ports
You can create specific rules for TCP or UDP protocols, restricting them to specific ports or ranges.
Get-NetTCPConnection -State Listen
Used temporarily by client applications when initiating a connection to a server. Why You Must Monitor Open Ports on Windows 11