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Method and system for network identification via DNS

  • US 8,266,672 B2
  • Filed: 03/21/2008
  • Issued: 09/11/2012
  • Est. Priority Date: 03/21/2008
  • Status: Active Grant
First Claim
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1. A method of operating a client to identify a private network, the method comprising:

  • storing a pair of a name and an IP address on the client, wherein the IP address is assigned to the name by an administrator of a predetermined network;

    transmitting the name to a DNS server in a request for the DNS server to lookup a corresponding IP address;

    receiving a response to the request from the DNS server;

    comparing the request to the response, wherein a policy of the client is set for a known network when the corresponding IP address received from the DNS server matches the IP address stored on the client, and wherein the policy of the client is set for an unknown network when the DNS server does not return a matching IP address.

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