A control device according to an embodiment of the present disclosure controls communications between a plurality of information terminals at a first site and an information device at a second site. The control device includes: an interface that obtains class information indicating what class is allocated to each of those information terminals and also obtains rate information indicating a rate of communication with the information device over a network; and a control section that puts an upper limit on the communication rate of each of the information terminals by reference to the class information and the rate information and notifies the information terminal of the upper limit.