1 - Open Windows Firewall With Advanced Security.
2 - Highlight Windows Firewall with Advanced security
3 - Click action - Properties
4 - Click customize under logging
5 - Change Log dropped packets to "yes"
6 - Go to C:\Windows\System32\LogFiles\Firewall
7 - open pfirewall.log (You may need to use Notepad as an admin)
4th column is Port type, 7th column is port number