The present invention relates to a network device and method available for use in non-secure use mode. A network device according to the present invention includes an ownership establishment determination unit for determining whether ownership has been established in the network device and establishing either a secure or non-secure use mode, upon reception of a use request message from a user through a control unit; and a non-secure use range search unit for searching for a non-secure use range available in non-secure use mode, if the ownership establishment determination unit determines the establishment of the non-secure use mode, and granting the user a license for the searched non-secure range. According to the present invention, there is an advantage in that a license for an appropriate range of content of a secure network device can be granted to a user even during the initial construction stage of a home network.