A communication apparatus that communicates with at least one electronic device, the communication apparatus comprising: a first communication unit configured to transmit connection data of a second network (Wireless LAN) to the at least one electronic device by way of a first network; a second communication unit configured to communicate with the at least one electronic device by way of the second network in accordance with the connection data transmitted by the first communication unit; a storage unit configured to store identification data of each of the at least one electronic device that communicates with the second communication unit; a determination unit configured to determine whether a first criterion is met indicative of the at least one electronic device not being authorized to communicate by way of the second network based on the identification data of each of the at least one electronic device stored in the storage unit; and an access control unit configured to prohibit the at least one electronic device from accessing the communication apparatus by way of the second network when the determination unit determines that the first criterion is met; the communication apparatus characterised by comprising: a removal device, wherein when the at least one electronic device is unable to communicate by way of the first network and is able to communicate by way of a third network, the removal device is configured to transmit a deletion request to the at least one electronic device requesting the at least one electronic device to delete the connection data; wherein when the at least one electronic device is unable to communicate by way of the first network and is able to communicate by way of the third network, the removal device is configured to delete the identification data corresponding to the at least one electronic device from the storage unit; and wherein the determination unit is configured to change the connection data if the determination unit determines that a second criterion is met indicative of the at least one electronic device being able to communicate by way of the third network, and wherein the first communication unit transmits the connection data changed by the determination unit by way of the first network. a first communication unit configured to transmit connection data of a second network (Wireless LAN) to the at least one electronic device by way of a first network; a second communication unit configured to communicate with the at least one electronic device by way of the second network in accordance with the connection data transmitted by the first communication unit; a storage unit configured to store identification data of each of the at least one electronic device that communicates with the second communication unit; a determination unit configured to determine whether a first criterion is met indicative of the at least one electronic device not being authorized to communicate by way of the second network based on the identification data of each of the at least one electronic device stored in the storage unit; and an access control unit configured to prohibit the at least one electronic device from accessing the communication apparatus by way of the second network when the determination unit determines that the first criterion is met; the communication apparatus characterised by comprising: a removal device, wherein when the at least one electronic device is unable to communicate by way of the first network and is able to communicate by way of a third network, the removal device is configured to transmit a deletion request to the at least one electronic device requesting the at least one electronic device to delete the connection data; wherein when the at least one electronic device is unable to communicate by way of the first network and is able to communicate by way of the third network, the removal device is configured to delete the identification data corresponding to the at least one electronic device from the storage unit; and a removal device, wherein when the at least one electronic device is unable to communicate by way of the first network and is able to communicate by way of a third network, the removal device is configured to transmit a deletion request to the at least one electronic device requesting the at least one electronic device to delete the connection data; wherein when the at least one electronic device is unable to communicate by way of the first network and is able to communicate by way of the third network, the removal device is configured to delete the identification data corresponding to the at least one electronic device from the storage unit; and wherein the determination unit is configured to change the connection data if the determination unit determines that a second criterion is met indicative of the at least one electronic device being able to communicate by way of the third network, and wherein the first communication unit transmits the connection data changed by the determination unit by way of the first network.