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:
Feb. 19, 2013
Filed:
Aug. 05, 2009
Christopher A. Smith, Arlington, VA (US);
Michael A. Bentofsky, Falls Church, VA (US);
Sean Mountcastle, Herndon, VA (US);
Piet Barber, South Riding, VA (US);
Christopher A. Smith, Arlington, VA (US);
Michael A. Bentofsky, Falls Church, VA (US);
Sean Mountcastle, Herndon, VA (US);
Piet Barber, South Riding, VA (US);
Verisign, Inc., Mountain View, CA (US);
Abstract
A method of filtering a plurality of DNS queries, wherein each DNS query includes a query name and a resource record type, includes defining a filter rule including a domain name, a filter type, and a throttle percentage and forming a filter file including the filter rule. The method also includes transmitting the filter file from a server to a plurality of filter proxies, transmitting the filter file from each of the plurality of filter proxies to one or more processing engines, and receiving the plurality of DNS queries at one of the one or more processing engines. The method includes determining a match between the domain name and the query name and between the resource record type and the filter type for a subset of the plurality of DNS queries, and blocking a predetermined percentage (equal to the throttle percentage) of the subset of the plurality of DNS queries.