Method for sharing contents using digital living network alliance network

A method for sharing content by using a DLNA(Digital Living Network Alliance) network is provided to enable DLNA devices outside home to share contents through the DLNA network and to execute various kinds of contents in a portable terminal regardless of the size of a storage space and processing performance of the portable terminal. A method for sharing content by using a DLNA(Digital Living Network Alliance) network comprises the following several steps. A gateway logs in by using registered account information(S101) and transmits an IP address of the gateway(S103). A DDNS(Dynamic Domain Name System) matches the IP address of the gateway with the account information and registers the IP address of the gateway(S105). A DLNA device outside home logs in by using the registered account information and transmits an IP address of the DLNA device(S107). The DDNS matches the IP address of the DLNA device with the account information and registers the IP address of the DLNA device(S109). If the registration of the gateway or the device based on the IP address is successful, the gateway or the device gets connected to a VPN(Virtual Private Network)(S111). The DLNA device or the gateway connected to a network via the VPN continuously monitors whether the IP address gets changed(S115). If the IP address of the gateway is changed(S117), the gateway notifies the DDNS of the changed IP address(S119). The DDNS registers the changed IP address through the notified IP address(S121) and notifies the device outside home of the changed IP address(S123). If an address change notification procedure is performed in accordance with change of the IP address of the gateway, the previously connected VPN is disconnected(S125) and a new VPN is connected by using the changed IP address(S127).