Hi @SN,
McAfee Firewall stops unsafe connections being made to your computer. You might see large amounts of blocked connections in your Security History. Don’t be alarmed – your McAfee software is simply telling you that it kept you safe; The Firewall blocked any suspicious connections, so you don't need to worry about them.
When your input is needed, you will see a McAfee alert in the bottom right of your screen.
Regards,
Sudharsanam G