Lock-free updates to a domain name blacklist

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United States of America Patent

PATENT NO 9591030
APP PUB NO 20170054761A1
SERIAL NO

15042894

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Abstract

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A computer-implemented method updates a domain name system blacklist in a lock-free manner is disclosed. In the method, an entry of the domain name blacklist is read at a DNS resolver in a plurality of DNS resolvers. The entry specifies a policy for the DNS resolver to execute when the DNS resolver receives a request to resolve a domain name. Before the reading is complete, an updated entry of the domain name blacklist is received, a new record to the domain name blacklist is added, and the entry being read is placed into a garbage pool having a current version number. Independently from the reading of the entry, the current version number is incremented and a new garbage pool is created for the incremented version number. When the reading is complete, the current version number is assigned to the DNS resolver.

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Patent Owner(s)

Patent OwnerAddress
FARSIGHT SECURITY INC177 BOVET ROAD SUITE 180 SAN MATEO CA 94402

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schryver, Vernon Boulder, US 2 15

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