Windows 11 Open Ports Online

Windows has a kernel-mode HTTP listener ( HTTP.sys ) that allows multiple applications to share ports like 80 and 443 via URL reservations. View HTTP.sys listeners:

But easier: use Get-NetTCPConnection – it’s built on the same API. windows 11 open ports

: For outgoing connections, Windows 11 uses a default dynamic range of 49152 to 65535 Firewall Profiles : Rules can be applied to three specific network profiles: (workplace), (trusted home networks), and (untrusted spots like coffee shops). Microsoft Support Commonly Used & Pre-configured Ports Description HTTP / HTTPS Standard web traffic; 443 is encrypted. SMB (File Sharing) Used for file and printer sharing. Used for client-server communication. Resolves domain names to IP addresses. Remote Desktop Protocol for remote access. Managing Ports in Windows 11 Windows has a kernel-mode HTTP listener ( HTTP

-o : Shows the PID (Process ID) associated with each connection. Resolves domain names to IP addresses

Opening ports exposes your computer to potential security threats. Follow these best practices: Do not leave unused ports open.

| State | Meaning | |-------|---------| | | The port is open and waiting for incoming connections. This is the most common state for server applications. | | ESTABLISHED | An active connection exists between your computer and another device. Data is currently flowing. | | CLOSE_WAIT | The local connection has closed, but the remote side hasn't acknowledged it yet. | | TIME_WAIT | The connection has been closed, but the port remains temporarily reserved to ensure all data packets have arrived. | | FIN_WAIT | The connection is in the process of closing. |