Kaspersky firewall ? LOL
I did firewall work at one time in my career: “That which is not permitted is denied”. At the beginning everything is denied, and ports are opened up as required relative to the packet type. I guess these boys permitted too many packet types on too many tcp/ip ports.
Single point of failure. These Comtech pikers should be ashamed of themselves. Thats assuming they’re being “truthful” in their disclosure.