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AssigneesNippon Telegraph and Telephone Corporation, Mitsubishi Heavy Industries, Ltd.
InventorsKeiichi OKABE, Takaaki KOYAMA, Jun MIYOSHI, Yoshihiro ITOH, Naohiko YOSHIZUMI, Tetsuo TAKAHASHI, Yuki MORI, Toshiyuki YAMADA, Naoki YAMASAKI
Estimating the term…
An intrusion prevention device includes a reception unit, a monitoring unit, and a determination unit. The reception unit receives, from a control target device, a notification indicating a state of the control target device. The monitoring unit receives a control command transmitted from a control device to the control target device. The determination unit determines whether to permit or block passage of the control command received by the monitoring unit in accordance with the state of the control target device received by the reception unit.
An intrusion prevention device comprising:
An intrusion prevention method executed by an intrusion prevention device, the method comprising:
A non-transitory computer-readable recording medium containing an intrusion prevention program for causing a computer to execute:
Dependencies are inferred from the claim text.