A method of disseminating information regarding at least one electrical device using a registration server, the at least one electrical device has unique identification information, an internal IP address, and an external IP address, wherein the external IP address of the at least one electrical device is an IP address of a first gateway device for a first local network comprising the at least one electrical device and the first gateway device, the method comprising: receiving in the registration server a first request to register the at least one electrical device, the first request to register includes the unique identification information, the internal IP address, and the external IP address of the at least one electrical device; storing in the registration server the unique identification information, the internal IP address, and the external IP address of the at least one electrical device; receiving (830, 835) in the registration server from a first client computer a first request for first information regarding the at least one electrical device, the first request for the first information includes an external IP address of the first client computer and the unique identification information of the at least one electrical device; providing to the first client computer the external IP address of the at least one electrical device when the external IP address of the first client computer is different from the external IP address of the at least one electrical device; and providing to the first client computer the internal IP address of the at least one electrical device when the external IP address of the first client computer is identical to the external IP address of the at least one electrical device, wherein: the registration server is not part of the first local network; and characterized in that the providing to the first client computer the internal IP address of the at least one electrical device comprises: redirecting the first request for the first information to the first gateway device when the external IP address of the first client computer is identical to the external IP address of the at least one electrical device. receiving in the registration server a first request to register the at least one electrical device, the first request to register includes the unique identification information, the internal IP address, and the external IP address of the at least one electrical device; storing in the registration server the unique identification information, the internal IP address, and the external IP address of the at least one electrical device; receiving (830, 835) in the registration server from a first client computer a first request for first information regarding the at least one electrical device, the first request for the first information includes an external IP address of the first client computer and the unique identification information of the at least one electrical device; providing to the first client computer the external IP address of the at least one electrical device when the external IP address of the first client computer is different from the external IP address of the at least one electrical device; and providing to the first client computer the internal IP address of the at least one electrical device when the external IP address of the first client computer is identical to the external IP address of the at least one electrical device, the registration server is not part of the first local network; and characterized in that the providing to the first client computer the internal IP address of the at least one electrical device comprises: redirecting the first request for the first information to the first gateway device when the external IP address of the first client computer is identical to the external IP address of the at least one electrical device.