Hello! IDrive is horrific backup software IMO but people use it and it eats bandwidth. It’s not a preset in layer 7 rules in wireless firewall settings. Anybody know how to nerf it?
Despite the branding it is not an Apple product.
In that case, port the machine down. Start a packet capture on "port 53". Start the machine up and then start the backup.
Examine all the DNS queries. You should see something related to that product. Then create a firewall rule to block access to that DNS domain.
Dude this is most excellent.