JFirewallTest detects gaps and holes in your system of open ports that don't need to be necessarily running and that Windows built-in Firewall misses to detect.
It scans the whole system and at the end of this scan shows you a list of the ports that are open and available for others to see and enter.
This tool helps you to stop the vulnerability of your system and make it stronger by closing the ports that are open and are not necessary.
JFirewallTest is completely free and compatible with every Windows Operating System. It's easy to use and configure and it won't be a disappointment.