You can use wireshark to access the server on the device, its what they use when they update firmware, but have you used a modded powerline adaptor to access en

You can use wireshark to access the server on the device, its what they use when they update firmware, but have you used a modded powerline adaptor to access engineering settings in white goods like modern fridge freezers because alot of them have a cpu controlling everything and you access it using the mains plug?