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:
Sep. 07, 2021
Filed:
Mar. 27, 2018
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventor:
Hiroshi Kurakami, Musashino, JP;
Assignee:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 12/26 (2006.01);
U.S. Cl.
CPC ...
H04L 63/1425 (2013.01); H04L 43/022 (2013.01); H04L 43/026 (2013.01); H04L 43/16 (2013.01); H04L 63/1416 (2013.01);
Abstract
An acquiring unit acquires a packet indicating flow information that is output by a network device at a predetermined sampling rate, and a determining unit determines as abnormal, for each of predetermined traffic patterns, when a sampling error rate is equal to or lower than a predetermined upper limit value and the number of packets acquired in a predetermined count period preceding from a current time or an average value of the number of packets per unit time is equal to or higher than a predetermined detection threshold.