A communications system includes a first communications part configured to perform communications with a terminal apparatus, a second communications part configured to perform communications via a network, a connection controller configured to start establishing a connection or release a connection between the first communications part and the second communications part, a display part configured to display authentication information transmitted from the terminal apparatus, an input part configured to receive an input from a user, and a connection manager configured to manage a time to allow the user to have a connection to the network in accordance with an instruction input by the user when the authentication information displayed by the display part matches authentication information reported in advance to the user who has been allowed to have the connection to the network.