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:
May. 17, 2022
Filed:
May. 07, 2020
Nortonlifelock Inc., Tempe, AZ (US);
Bruce McCorkendale, Manhattan Beach, CA (US);
NORTONLIFELOCK INC., Tempe, AZ (US);
Abstract
Server Name Indication (SNI) hostname extraction to populate a reverse Domain Name System (DNS) listing to protect against potentially malicious domains. In some embodiments, a method may include detecting a Transport Layer Security (TLS) handshake between a first client application and a first server application, extracting an SNI hostname and an Internet Protocol (IP) address from the TLS handshake, populating the reverse DNS listing with the SNI hostname as a domain paired with the IP address, detecting communication between a second client application and the IP address, accessing the reverse DNS listing to determine the domain paired with the IP address, determining that the domain is a potentially malicious domain, and in response to determining that the domain is a potentially malicious domain, performing a remedial action to protect against the potentially malicious domain.