There is provided a communication device, which is provided with a network interface that interfaces the communication device with a network, a reception judgment unit configured to judge whether to accept data received by the network interface from the network in accordance with predetermined restriction data defining at least one authorized device and/or at least one unauthorized device, and a process execution unit configured to execute a process in response to data for which the reception judgment unit judges to accept. In this configuration, the reception judgment unit judges to accept data received by the network interface from the network in response to a source device of data corresponding to a predetermined management device serving to manage the communication device in the network regardless of a judgment result made by the reception judgment unit in accordance with the predetermined restriction data.