| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of determining whether a communication opposite party under the control of a controller is a switch or an attacker by using a control message indicating operation to a packet.SOLUTION: A controller for transmitting a control message indicating operation to a packet to a switch under its control includes a control device that performs processing to transmit an inspection message, a control message for inspection, to a communication opposite party under its control, and processing to determine that the communication opposite party is an attacker but not the switch when an event which should occur when the switch performs processing based on the inspection message does not occur at the communication opposite party.SELECTED DRAWING: Figure 7 |
