A proxy may provide user equipment (“UE”), operating within or outside a particular Local Area Network (“LAN”), access to different network-connected devices operating within the particular LAN, including access to read data from the devices, write data to the devices, or otherwise configure the devices to perform various tasks, functions, or other actions. The proxy may provide an external network interface to access the network-connected devices of a given LAN by converting and securely exchanging messaging between a first interface that is exposed to the external network, such as the Internet, and a different second interface with which the network-connected devices communicate within the LAN. A single application or user interface, executing on the UE, may also be used to facilitate messaging with the proxy, and access to each of the different network-connected devices on the LAN.