Are you behind a NAT router? Was this a blocked attempt to connect to your computer? If so then it would have been a software firewall that you’re talking about? Additionally, if you’re not behind a NAT router, and you have a software firewall warning you about all incoming connection attempts, you’d be getting hundreds of such notices a day just from IBR. (Internet Background Radiation)
Or is this a program that tried to execute on your computer?
Did not appear to be a program that tried to execute.....
Behind a NAT router...possibly an attempt to connect to my PC....