The present disclosure relates to a technique for a sensor network, machine to machine (M2M) communication, machine type communication (MTC) and the Internet of Things (IoT). The present disclosure can be used for intelligent services (services related to a smart home, a smart building, a smart city, a smart car or a connected car, healthcare, digital education, retail business, security and safety and the like) on the basis of the technique. An operating method of a tethering device, according to an embodiment of the present invention, comprises the step of: selecting a first network and/or a second network according to the characteristic of a data request message received from a client device; and transmitting, to the client device, a response message received from a server through the at least one selected network.