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System for providing DNS-based control of individual devices

  • US 9,992,234 B2
  • Filed: 06/19/2015
  • Issued: 06/05/2018
  • Est. Priority Date: 03/18/2010
  • Status: Active Grant
First Claim
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1. A system for providing a DNS-based device control system to provide security to users, the system comprising:

  • a gateway through which a user uses an individual device to communicate, the gateway uniquely identifying each of a plurality of individual devices in communication with the gateway via a unique device identifier for each of the plurality of individual devices;

    a dynamic policy enforcement engine in communication with a DNS engine, wherein a DNS query from the individual device is transmitted to the gateway and then across a wide area network to the dynamic policy enforcement engine to a DNS engine; and

    a memory device from which the dynamic policy enforcement engine selects a policy which applies to the individual device that originated the DNS query based on the unique device identifier of the individual device that originated the DNS query, the dynamic policy enforcement engine using the policy to determine whether a site that is the object of the DNS query is a benign site or a malicious site for the individual device, the dynamic policy enforcement engine passing the DNS query to the DNS engine and returning a response of the DNS engine to the individual device if the policy indicates that the individual device'"'"'s DNS query refers to the benign site.

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