A communication apparatus includes a first communication unit that transmits connection data of a second network to an electronic device by way of a first network, a second communication unit that communicates with the electronic device by way of the second network in accordance with the connection data transmitted by the first communication unit, a storage unit that stores identification data of the electronic device that communicates with the second communication unit, a determination unit that determines whether the electronic device is authorized to communicate by way of the first network based on the identification data of the electronic device stored in the storage unit, and an access control unit that prohibits the electronic device from accessing the communication apparatus by way of the second network when the determination unit determines that the electronic device is not authorized to communicate by way of the first network.