The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2022
Filed:
May. 28, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Naoto Fujiki, Tokyo, JP;
Tomoyasu Sato, Tokyo, JP;
Takeshi Nakatsuru, Tokyo, JP;
Takuya Minami, Tokyo, JP;
Masami Izumi, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An anomaly detection device includes a memory, and processing circuitry coupled to the memory and configured to acquire communication feature values of communication devices, calculate, for each transmission source MAC address included in the communication feature values acquired, a total value of the number of transmitted and received packets or a total value of the number of bytes, for each layer-2 switch connected to a corresponding communication device, and determine, for each transmission source MAC address, that a communication device corresponding to the transmission source MAC address is connected to a layer-2 switch whose total value of the number of transmitted and received packets or total value of the number of bytes calculated is the largest.