| 摘要 |
In a stage before a packet reaches a connection destination host (server and so on), an access control is carried out in a connection unit. Specifically, a controller managing a switch receives from the switch, a notice of an unknown packet sent from an access source host that is used by a plurality of users having different authorities. The controller inquires authentication data of a packet transmission user to the access source host. The controller inquires the permission or refusal of access to the access destination host based on the authentication data. When the access is permitted, the controller instructs the switch to register a flow entry of transfer of the packet. When the access is refused, the controller instructs the switch to register a flow entry of discard of the packet. |
