A user device that communicates with a network apparatus and in which at least one application is installed, wherein the network apparatus is a mobile communication network that wirelessly communicates to the user device and is connected to at least one PDN; the user device comprising: a receiver (10, 15) that is configured to receive from the network apparatus, restriction information included in broadcast information, the restriction information including a destination identifier for identifying an external network connected to the network apparatus and a barring rate associated with the destination identifier; a controller that when communication is to be started by the at least one application as detected by the reception of a connection request signal from a connection requester comprised in the user device, controls whether to allow or prevent the communication by the at least one application based on the destination identifier and the barring rate included in the restriction information and a destination identifier included in the connection request signal; and the connection requester that sends the connection request signal to the controller in response to receiving a report to start the communication from the at least one application, wherein the connection request signal includes a destination identifier for identifying an external network with which the at least one application is to start the communication; the destination identifier for identifying the external network connected to the network apparatus is an access point name and the destination identifier for identifying the external network with which the at least one application is to start the communication is an access point name; and the restriction information indicates, for each access point name, whether the access point name is restricted, and indicates a corresponding barring rate for each restricted access point name. a receiver (10, 15) that is configured to receive from the network apparatus, restriction information included in broadcast information, the restriction information including a destination identifier for identifying an external network connected to the network apparatus and a barring rate associated with the destination identifier; a controller that when communication is to be started by the at least one application as detected by the reception of a connection request signal from a connection requester comprised in the user device, controls whether to allow or prevent the communication by the at least one application based on the destination identifier and the barring rate included in the restriction information and a destination identifier included in the connection request signal; and the connection requester that sends the connection request signal to the controller in response to receiving a report to start the communication from the at least one application, wherein the connection request signal includes a destination identifier for identifying an external network with which the at least one application is to start the communication; the destination identifier for identifying the external network connected to the network apparatus is an access point name and the destination identifier for identifying the external network with which the at least one application is to start the communication is an access point name; and the restriction information indicates, for each access point name, whether the access point name is restricted, and indicates a corresponding barring rate for each restricted access point name.