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.

Date of Patent:
Jan. 29, 2019

Filed:

Mar. 06, 2018
Applicant:

Verisign. Inc., Reston, VA (US);

Inventors:

Yujie Zhao, Reston, VA (US);

Suresh Bhogavilli, Gaithersburg, MD (US);

Anupam Kulkarni, Aldie, VA (US);

Sivasankar Subramanian, Herndon, VA (US);

Assignee:

VERISIGN, INC., Reston, VA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
H04L 63/1416 (2013.01); H04L 63/1458 (2013.01); H04L 63/101 (2013.01); H04L 63/168 (2013.01); H04L 2463/141 (2013.01);
Abstract

A method for mitigating a denial of service attack includes determining, for a client, a number of requests being transmitted to a server and determining, for the client, that the number of requests for a time period is greater than a top talker threshold. The method includes classifying the client as a top talker based on the number of requests being greater than the top talker threshold and identifying, for the client, additional requests being transmitted to the server. The method also includes determining whether a number of the additional requests matches one or more attack patterns and preventing one or more of the additional requests from being transmitted to the server if the number of additional requests that matches one or more attack patterns is greater than a first threshold.


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