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Systems and methods for providing structured policy expressions to represent unstructured data in a network appliance

  • US 7,865,589 B2
  • Filed: 03/12/2007
  • Issued: 01/04/2011
  • Est. Priority Date: 03/12/2007
  • Status: Active Grant
First Claim
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1. A method of configuring a policy of a network device with an object-oriented expression to specify structure in a payload of a packet stream received by a network device, the method comprising:

  • (a) providing a configuration interface for configuring a policy for a network device;

    (b) receiving, via the configuration interface, an expression for the policy, the expression identifying (i) an object class to apply to a portion of the payload of a packet stream, and (ii) a member of the object class; and

    (c) receiving, via the configuration interface, information identifying an action for the policy, the action to be taken based on an evaluation of the expression.

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