System and method for filtering network traffic
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United States of America Patent
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Jan 30, 2018
Grant Date -
Sep 25, 2014
app pub date -
Jun 4, 2014
filing date -
Sep 3, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Protocol status information is used to perform traffic filtering by dropping messages that are not consistent with the protocol status information. In one embodiment, a method involves comparing message information and protocol status information. The message information is associated with a first message. The protocol status information is obtained in response to one or more second messages, which are conveyed according to a protocol used to assign network addresses to clients. The method also involves determining whether to discard the first message, based on an outcome of the comparison of the message information and the protocol status information. For example, it can be determined that the first message should be discarded, if the message information does not match the protocol status information.
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