Netzwerküberwachungsvorrichtung und Computerlesbares Aufzeichnungsmedium

Details

Veröffentlichungs-Nr.

EP3282646

Aktenzeichen

EP17183969

Anmeldetag

31. Juli 2017

Veröffentlichung

2. Januar 2019

Erteilung

2. Januar 2019

Rechtsraum

EP

IPC

H04L12/40H04L29/06// H04L9/32H04L29/08

Abstract

A network monitoring device (10) according to an embodiment monitors a message that is periodically transmitted in a network in which a message identified by an identifier is transmitted and received, and includes a reception time recording unit (21) and an unauthorized-transmission determination unit (22). The reception time recording unit (21) records a reception time in association with the identifier, every time a message to be monitored is received. The unauthorized-transmission determination unit (22) determines presence of an unauthorized transmission on the received message to be to be monitored, based on a latest reception time T<i>, an m previous reception time T<i-m>, a message transmission period F, and a constant σ determined in advance, in a period from the reception time T<i-m>to the reception time T<i>, every time the message to be monitored is received.

Anmelder

Firmen

Toshiba Digital Solutions Corporation
TOYOTA JIDOSHA KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete