Domain name system identification and attribution
AssigneeCisco Technology, Inc.
InventorsLucas Jonathan Siba, Brian Somers
Life of this patent
Estimating the term…
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AssigneeCisco Technology, Inc.
InventorsLucas Jonathan Siba, Brian Somers
Estimating the term…
Techniques are presented herein for a DNS resolver to encode a falsified IP address with a client identifier that identifies a client attempting to access a blocked domain. The DNS resolver receives, from a client, a DNS request that contains a requested domain name and a client identifier. The DNS resolver then determines the identity of the client from the client identifier in the DNS request. The DNS resolver then applies policies for the domain name system request to determine that the requested domain name should be blocked for the identity of the client. The DNS resolver may then construct a falsified Internet Protocol address when the domain name should be blocked for the identified client, where the falsified Internet Protocol is encoded with the client identifier. The DNS resolver then sends to the client, in response to the DNS request, the falsified Internet Protocol address.
A method comprising:
An apparatus comprising:
One or more non-transitory computer readable storage media of a server in communication with clients, the computer readable storage media being encoded with software comprising computer executable instructions, and when the software is executed, operable to:
Dependencies are inferred from the claim text.