netsh advfirewall firewall set rule group="Network Discovery" new enable=No
New-NetFirewallRule -DisplayName "Block port 445" ` -Direction Inbound ` -LocalPort 445 ` -Protocol TCP ` -Action Block
For legacy compatibility, you can revert to the older range (1024–5000), but modern Windows uses the IANA-recommended range. windows 11 open ports
Then check PID in Task Manager or:
[Start] ➔ Type "WF.msc" ➔ Inbound Rules ➔ New Rule ➔ Port ➔ Define TCP/UDP & Port # ➔ Allow connection ➔ Name & Save How to Open Ports in Windows Firewall (Step-by-Step Guide) Click Next
Open the , type Windows Defender Firewall , and press Enter .
| Sort-Object Port
Once you have a process ID (PID) from the netstat output, you can identify which application owns that PID using:
Select and type the port number you want to open (e.g., 25565 for Minecraft, or a range like 80-88 ). Click Next . Select Allow the connection and click Next . This link or copies made by others cannot be deleted
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.