I remember when TPM modules and BitLocker became standard, starting with laptops. I always suspected Microslop of adding a yet-to-be-discovered back door in their closed source shitshow.
Must be what a pepper prepper feels like when the first nuke drops.
At least the AMD system management requires physical access (the AMD PSP does not have a network stack). Intel ME / AMT does have a network stack, and it hides its packets inside the host traffic. That’s the reason of the black holes on many Intel CPUs when listening on ports 16992-16995 (the host does not see incoming traffic to those ports because the AMT intercepts it).
Hmm, do you know what happens if you block those ports on your router so they can’t escape the network or get requests sent to them?
Surely the traffic is blocked? The firewall in your router can’t know if they came from your CPU OE something else
Outgoing traffic would be a random port. Incoming would be blocked by default on all routers. Chances are, if the intel lights out management stuff was phoning home, it would do it on port 443 like the majority of data these days. The ports mentioned above are for unsolicited incoming packets, and that would be blocked at the route level for anything outside your local network.