: Press Win + R , type perfmon /res , and press Enter. Navigate to the Network tab and expand Listening Ports to see a clear list of active services.
Windows 11 (and Windows Server 2019+) uses a default ephemeral port range of . You can check this with: windows 11 open ports
Before we command the Command Prompt, let's understand the landscape. Windows 11 ships with enabled by default. This is a stateful, host-based firewall that blocks inbound traffic unless a rule explicitly allows it. Typically, outbound traffic (your PC reaching out to the internet) is allowed. : Press Win + R , type perfmon /res , and press Enter
This is the preferred method, as it keeps the service running but denies external access. You can check this with: Before we command
The netstat (Network Statistics) tool is built into every Windows version.
Netstat (local listeners)