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:
Jun. 13, 2023
Filed:
Sep. 20, 2021
Applicant:
Level 3 Communications, Llc, Broomfield, CO (US);
Inventors:
John R. Woodworth, Amissvile, VA (US);
Dean Ballew, Sterling, VA (US);
Mark Dehus, Thornton, CO (US);
Assignee:
Level 3 Communications, LLC, Broomfield, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); H04L 61/4511 (2022.01); H04L 61/301 (2022.01); H04L 61/58 (2022.01);
U.S. Cl.
CPC ...
H04L 61/4511 (2022.05); H04L 61/301 (2013.01); H04L 61/58 (2022.05);
Abstract
The present application describes a system and method for passively collecting DNS traffic data as that data is passed between a recursive DNS resolver and an authoritative DNS server. The information contained in the collected DNS traffic data is used to generate a virtual authoritative DNS server, or a zone associated with the authoritative DNS server, when it is determined that the authoritative DNS server has been compromised.