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:
Aug. 25, 2026
Filed:
Apr. 25, 2023
Centurylink Intellectual Property Llc, Broomfield, CO (US);
Dean Ballew, Sterling, VA (US);
John R.B. Woodworth, Amissville, VA (US);
CenturyLink Intellectual Property LLC, Denver, CO (US);
Abstract
Examples of the present disclosure are directed to systems and methods for using router identifier information to mitigate denial of service attacks in an autonomous system (AS). Each router of the AS may be assigned a router identifier (ID) that is unique to the AS and may be periodically changed. The ingress router first receiving the packet within a particular AS may insert its router ID into the packet. A threat intelligence system may sample packets of traffic received by the AS and examine the inserted ingress router IDs in making a threat determination. If a distribution of detected ingress router IDs from sampled packets does not match an expected distribution of ingress router IDs, one or more threat mitigation actions may be invoked.