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Defender Remote Port Connection Sequence
Why does Defender regularly attempt to connect devices within the same subnet, using this port sequence: 106, 111, 515, 623, 660, 808, 1433, 1434, 1521, 1720, 2049, 2869, 3283, 3306, 5040, 5357, 500...
Yeah that's it - I've mapped the ports to the services and it makes sense, looking at the variety of services it attempts to "discover".