User device and restriction method

A user device comprising:

• a memory that stores an application that communicates with an external network connected to a network apparatus;
• a receiver that receives, from the network apparatus, restriction information including a first destination identifier that identifies the external network and a barring rate associated with the first destination identifier;
• a controller;
• and
• a connection requester that sends a connection request signal to the controller in response to receiving a report to start communication from the application;
• wherein the controller that detects that the communication is to be started by the application and determines whether to allow or prevent the communication by the application based on the restriction information.