Patent ID: 11870604
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A communication system comprising
a data center of a cloud operator, the data center providing a communication service to a terminal via a first wide area network to which the data center connects, and a wireless LAN (Local Area Network) to which the terminal connects, wherein the data center comprises:
a first gateway configured to connect with the terminal using a VPN (Virtual Private Network) established between the first gateway and the terminal through the first wide area network and the wireless LAN and terminate the VPN;
a second gateway configured to connect to a second wide area network,
a virtual network connected to the first gateway and the second gateway; and
a function block that is provided between the first gateway and the second gateway and that performs, based on filter information, filtering of a first packet transmitted by the terminal using the VPN and received by the first gateway from the first wide area network, and a second packet destined to the terminal and received by the second gateway from the second wide area network, the function block comprising a plurality of function blocks between the first gateway and the second gateway, each of the plurality of function blocks corresponding to one of a plurality of terminals accessing the data center via the VPN established between the terminal and the first gateway through the wireless LAN and the first wide area network.