A configuration is provided in which a client in a home network receives content from a server outside the home network and plays the content. A home IMS gateway maps an external server outside the home network as a virtual home network device, and executes a process of receiving a content providing service provided by the external server by using mapping information. Furthermore, device information of the client is obtained and registered in a database existing outside the home network, and a content providing server executes a process of obtaining the device information and providing the client with content matching the device.