Communication system, control method thereof, and storage medium

1 . A communication system comprising:

a relay apparatus configured to connect to a mobile communication network;

an information processing apparatus configured to connect to the relay apparatus via a local area network; and

an apparatus management server configured to manage the information processing apparatus,

wherein the information processing apparatus is configured to, upon detecting a connection of an external apparatus different from the relay apparatus on the local area network, transmit a first request to the relay apparatus and first information to the apparatus management server, wherein the first request is a request for changing an operation setting of the relay apparatus and the first information indicates that the external apparatus is connected to the apparatus management server,

wherein the relay apparatus is configured to restrict communication of the external apparatus via the mobile communication network based on receiving the first request transmitted by the information processing apparatus,

wherein the apparatus management server is configured to transmit, based on the apparatus management server receiving the first information, second information for identifying a subscriber and a second request for interrupting use of the mobile communication network to a server of a carrier providing a mobile communication service via the mobile communication network to which the relay apparatus is connected, and

wherein, based on the information processing apparatus detecting the connection of the external apparatus on the local area network, both of the transmitting the first request by the information processing apparatus and the transmitting the second request by the apparatus management server are performed.

2 . The communication system according to claim 1 , wherein the first request is a request for allowing exchange of identification information about the information processing apparatus and a packet for an information processing apparatus identified by the identification information, and for setting a packet filtering condition to the relay apparatus, the packet filtering condition being a condition of denying exchange of a packet with the external apparatus different from the relay apparatus via the relay apparatus.

3 . The communication system according to claim 2 , wherein the identification information is one of a media access control (MAC) address and an internet protocol (IP) address of the information processing apparatus.

4 . The communication system according to claim 1 , wherein the first request is a request for shutting down the relay apparatus, and the relay apparatus restricts communication via the mobile communication network by shut-down processing upon reception of the request.

5 . The communication system according to claim 1 , wherein the information processing apparatus is a printing apparatus configured to print an image on a sheet.

6 . The communication system according to claim 1 , wherein the information processing apparatus and the relay apparatus are connected with a wired cable.

7 . The communication system according to claim 6 , wherein the information processing apparatus is configured to display, on a display unit of the information processing apparatus, a screen for prompting a user to bond one end of the wired cable to the information processing apparatus and to bond another end of the wired cable to the relay apparatus, after completion of construction of a local area network including the information processing apparatus and the relay apparatus.

8 . The communication system according to claim 1 , wherein the information processing apparatus is configured to display a notification content that indicates a result of transmitting the first request on a display of the information processing apparatus.

9 . The communication system according to claim 8 , wherein the notification content is displayed when setting a packet filtering condition in the relay apparatus is successful on a basis of the first request.

10 . The communication system according to claim 8 , wherein the notification content indicates that the relay apparatus is shut down on a basis of the first request.

11 . The communication system according to claim 8 , wherein the notification content is displayed when processing on the relay apparatus based on the first request fails, and raises an alert regarding a configuration of the local area network.