There is provided a configuration enabling prevention in advance of leakage and outflow of secret information in the local network, such as private data and content whose copyright and use right is restricted. A plurality of identification information of a communication destination device are acquired at different data processing levels. Identification information acquired by data processing at a level of a physical layer or a data link layer of the OSI reference model and identification information acquired by data processing at a layer level of a network layer or higher are received and these identification information are matched.