I am one of the specialized technicians that install the Xfinity Home Security and in response to this I would like to let you know the correct answer to this issue. Any Apple product that belongs to the customer will still be able to be administered by the owner. There is a setting on our XH touchscreen that puts the customer's router into the DMZ. There is a setting in the touchscreen Under "settings" in the home screen"connectivity" and it "exposes customer's router to the internet". I am not sure that the customer can do this on their own as I always do this during the installation.
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