Connection Blocking

Hi everyone,

I searched around on this topic but didn't find anything that was the exact problem I'm having. I recently started getting popup firewall messages that say, "The computer "000.000.000.000" is attempting to access Firefox on your computer. Do you want to allow this connection?" The numbers are an IP address.

Seems like other people have had this issue with Spotify, etc., but I haven't seen any with browsers/Firefox. Does anyone know what this could be?

Thanks!