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:
Mar. 14, 2023
Filed:
Feb. 13, 2020
Palo Alto Networks (Israel Analytics) Ltd., Tel Aviv, IL;
PALO ALTO NETWORKS (ISRAEL ANALYTICS) LTD., Tel Aviv, IL;
Abstract
Methods, apparatus and computer software products for protecting a computing system implement embodiments of the present invention that include extracting, from data traffic transmitted over a data network connecting a plurality of computing devices to multiple Internet hosting services, respective sets of transmissions from the computing devices to the Internet hosting services, and identifying, in a given set of the transmissions from a given computing device, multiple domain name system (DNS) requests for an identical second-level domain (2LD) and for different respective sub-domains within the 2LD. A number of the different sub-domains within the 2LD and a data size of the multiple DNS requests are computed, and when the number of the different sub-domains and the data size of the multiple DNS requests exceed a predefined criterion, a preventive action is initiated to inhibit DNS tunneling from at least the given computing device.