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. 20, 2022
Filed:
May. 27, 2020
Arbor Networks, Inc., Westford, MA (US);
Archana A. Rajaram, Ann Arbor, MI (US);
Andrew David Mortensen, Ann Arbor, MI (US);
Arbor Networks, Inc., Westford, MA (US);
Abstract
A computer method and system for detecting a Denial of Service (DoS) attack by detecting changes in recent cardinality of a network traffic flow. Packet traffic flows are received from external device (networks), and a cardinality estimation is then performed on a received packet traffic flow. A series of cardinalities is maintained for prior packet traffic flows. Changes in cardinalities associated with prior packet traffic flows are detected when compared to cardinalities of a current packet traffic flow. An alert condition for the network traffic flow is generated regarding a suspected DoS attack based upon the detected changes in cardinalities regarding comparison of the cardinalities associated with prior packet traffic flows compared to cardinalities of a current packet traffic flow.