Ntt Docomo, Inc.

Mana Kaneko

Ken Igarashi

Satoru Imai

Masataka Ikeda

Hiromasa Yamaguchi

Motohiro Abe

Shinichi Minamimoto

A communication system in which a plurality of communication networks are interconnected, the communication system including a plurality of inter-communication network connections that include an inter-communication network connection by a first circuit performing communication by a first protocol and an inter-communication network connection by a second circuit performing communication by a second protocol, including: a route selection apparatus that is provided in a communication network that is connected to another communication network by the first circuit, and that is connected to another communication network by the second circuit; and an address resolution apparatus that can communicate with the route selection apparatus, wherein the route selection apparatus sends an inquiry to the address resolution apparatus about an address corresponding to an incoming number in a connection request signal transmitted from a user apparatus in the communication network so as to determine whether to transmit the connection request signal to a communication network of an incoming destination via the first circuit or to transmit the connection request signal to a communication network of an incoming destination via the second circuit based on a response received from the address resolution apparatus.

Communication system, route selection apparatus, and route selection method

A host providing system includes a physical host network switch which determines permission and non-permission of communication on the basis of whether or not information pieces indicating users correlated with information indicating a transmission source and information indicating a transmission destination included in communication data from a physical instance match each other, and controls the communication data on the basis of a determination result. Accordingly, since only communication between instances of the same user is permitted, and thus communication from a physical instance is appropriately controlled, it is possible to ensure security in the system.

Host providing system and communication control method

A host providing system includes a physical host managing node which controls one or more physical servers and can manage a usage state of a physical host formed in the physical server, and thus the physical server for forming a physical host can be controlled in the system. In addition, a single physical host managing node is selected depending on instance type information included in an instance starting request from a user terminal, and the instance starting request is sent to the selected physical host managing node. Accordingly, it is possible to provide a physical instance complying with a user's request as a physical host.

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Chiyoda-ku, Japan

Mana Kaneko