Serious_Kangaroo_279

Can someone give me an advice how to protect a network against port exploits? and how do i install the firewall on the router and not just my personal computer

Hi guys, I’m new to Networking, I used Windows Defender to create a new rule to block Port 139, Then when i used Zenmap, i still see the port open and i also used cmd command netstat -aon | findstr 139 and i see services still listening to the port, Someone please explain how do i close a port? I cant seem to find any tutorial to show that, I also used a python script to scan ports in my machine and the port 139 is still open even when i blocked it in windows defender

I want to close port 139 to avoid NetBios ssn vulnerability