> Why would there be accidental port mappings on their router though?
replyThat's the point of NAT-PMP / UPnP, it just works (for game servers, torrent clients, industrial control systems etc.)
The idea of a control system requesting a port forward rule using NAT-PMP is itself rather questionable.
replyAh ok, I misunderstood what NAT-PMP was. Thanks for explaining.
replyMy guess is setting up a port forward in the gateway router is part of the freezer install process. The customer probably had to give the tech the router credentials and the tech sets up the forward themselves.
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