Windows 11 Open Ports !exclusive! Guide

Select TCP or UDP (usually TCP for applications). Under "Specific local ports," enter the port number (e.g., 80 , 3389 , or 25565 ). Action: Select Allow the connection .

Windows 11 includes a powerful portproxy feature accessible via the netsh command:

To permanently block a port through the firewall without terminating the underlying application:

Open PowerShell as an administrator (right-click the Start button and select Windows PowerShell (Admin) or Terminal (Admin) ).

The built-in Network Statistics ( netstat ) tool displays all active network connections and listening ports. windows 11 open ports

Connectionless. It prioritizes speed over reliability. It is ideal for live streaming, online gaming, and DNS queries. 2. Standard Network Ports You Should Know Port Number Common Service / Use Case Status Recommendation 21 FTP (File Transfer Protocol) Close unless actively transferring files 22 SSH (Secure Shell) Keep closed; restrict to trusted IPs if open 23 Telnet (Unencrypted text) Always Close (use SSH instead) 53 DNS (Domain Name System) Safe to leave open for name resolution 80 HTTP (Unencrypted Web Browsing) Safe, but HTTPS is preferred 135-139 NetBIOS / SMB (File sharing) Block completely at the router level 443 HTTPS (Secure Web Browsing) Safe and essential for modern web traffic 445 SMB (Server Message Block) High Risk; keep closed to prevent malware sprawl 3389 RDP (Remote Desktop Protocol) Close unless using; never expose to the public internet 3. How to Check for Open Ports in Windows 11

This method is excellent for quickly identifying which applications are listening on which ports without memorizing commands.

In these cases, restrict open ports to trusted IP addresses via firewall rules rather than opening them to the entire internet.

However, you often need to open specific ports. This is true for hosting gaming servers, running media servers like Plex, or setting up remote desktop connections. Select TCP or UDP (usually TCP for applications)

Right-click the Start menu and select or PowerShell (Admin) . To test a specific local port (e.g., port 80), run: powershell Get-NetTCPConnection -LocalPort 80 Use code with caution. How to Open Ports in Windows 11 Firewall

Remove-NetFirewallRule -DisplayName "RuleName"

netstat -ano | findstr :PORT_NUMBER

Use netstat -abno in an Administrator Command Prompt to see which executable ( -b ) is using which port ( -o for PID). Windows 11 includes a powerful portproxy feature accessible

How to view the list of open ports in Windows - Kaspersky Support

For outbound restrictions, repeat the process for .

netsh interface portproxy add v4tov4 listenport=8080 listenaddress=0.0.0.0 connectport=8080 connectaddress=192.168.1.100