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:
Oct. 26, 2021

Filed:

Feb. 25, 2020
Applicant:

Cloudflare, Inc., San Francisco, CA (US);

Inventors:

Lee Hahn Holloway, Santa Cruz, CA (US);

Srikanth N. Rao, San Francisco, CA (US);

Matthew Browning Prince, San Francisco, CA (US);

Matthieu Philippe François Tourne, San Francisco, CA (US);

Ian Gerald Pye, Santa Cruz, CA (US);

Ray Raymond Bejjani, San Francisco, CA (US);

Terry Paul Rodery, Jr., Millbrae, CA (US);

Assignee:

CLOUDFLARE, INC., San Francisco, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); G06F 21/55 (2013.01); G06F 21/57 (2013.01);
U.S. Cl.
CPC ...
H04L 63/1458 (2013.01); G06F 21/552 (2013.01); G06F 21/577 (2013.01); H04L 63/0281 (2013.01); H04L 63/1408 (2013.01); H04L 63/1416 (2013.01); H04L 63/1425 (2013.01); H04L 63/1433 (2013.01); H04L 63/1466 (2013.01); H04L 63/20 (2013.01);
Abstract

A cloud-based proxy service identifies a denial-of-service (DoS) attack including determining that there is a potential DoS attack being directed to an IP address of the cloud-based proxy service; and responsive to determining that there are a plurality of domains that resolve to that IP address, identifying the one of the plurality of domains that is the target of the DoS attack. The domain that is under attack is identified by scattering the plurality of domains to resolve to different IP addresses, where a result of the scattering is that each of those domains resolves to a different IP address, and identifying one of those plurality of domains as the target of the DoS attack by determining that there is an abnormally high amount of traffic being directed to the IP address in which that domain resolves.


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