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

Claim 16:
17. A communication method comprising:
connecting a first gateway in a data center of a cloud operator with a terminal by a VPN (Virtual Private Network) established between the first gateway and the terminal through a first wide area network to which the data center connects and a wireless LAN (Local Area Network) to which a terminal connects, the data center providing a communication service to the terminal;
performing connection from the terminal via the VPN, the first gateway that terminates the VPN, a virtual network and a second gateway in the data center to a second wide area network to which the data center connects; and
filtering, based on filter information, by a function block provided between the first gateway and the second gateway, 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.