Are you suggesting that detecting if your system is exposed to remote control is as easy as checking to see if your machine appears to have such ports open? And would the ports appear to be open if checked from the same machine?
Unclear. There are issues such as what IP address the ME is using. IP addresses are an OS level thing, and the ME is below that. Ethernet controllers don't know about IP addresses. The ME has the ability to make DHCP requests, so it can get an IP address of its own.[1]
The real question is what the ME does in addition to what it is documented to do.
