Windows 11 Open Ports Jun 2026

, which controls how applications and services communicate across a network. Microsoft Support Core Networking Concepts Port Types : Windows uses two main transport layer protocols: TCP (Transmission Control Protocol)

You can identify which ports are currently open on your system using built-in Windows tools. Using Command Prompt (CMD) windows 11 open ports

Rules can be applied differently based on whether the network is set to Public (restricted) or Private (open). , which controls how applications and services communicate