Network device, network connection management device, and method for connecting new network device

摘要

The present invention is intended to simplify the user's initial setup operation when connecting a new network device to a network built in his/her house/room and prevent connection of a different network device unknown to said user. A network connection management device, when receiving a network connection request from a new network device, sends the request to other network devices connected already to the network so as to be displayed on their displaying means to prompt the user to make an operation for confirming the request. The confirmation data inputted by the user through the inputting means of the network device is sent to the network connection management device, which then determines whether to permit the connection to said network. When the decision result is YES (permit), the new network device is connected to the network.