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System and method for content filtering

  • US 7,650,420 B2
  • Filed: 06/18/2008
  • Issued: 01/19/2010
  • Est. Priority Date: 12/28/2001
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • determining a filter privilege of a user associated with a client computer in response to a request for content including a first port number and a Uniform Resource Locator (URL);

    renumbering said request for content with a second port number based on said filter privilege;

    transmitting said request for content with said second port number to a content filtering server that is configured to listen for requests on said second port number;

    when the filter privilege is associated with an inclusion list and the URL is within the inclusion list, returning requested content to the client computer;

    when the filter privilege is not associated with the inclusion list and is within an exclusionary list and the URL is not in the exclusionary list, returning requested content to the client computer.

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