System and method of defense against denial of service of attacks
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United States of America Patent
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Sep 27, 2011
Grant Date -
Sep 4, 2008
app pub date -
Mar 3, 2008
filing date -
Mar 2, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method comprise a first buffer having a first capacity and a first threshold level adapted to store data frames having the lowest priority, a second buffer having a second capacity greater than the first capacity and a second threshold level greater than the first threshold level adapted to store data frames having a medium priority, a third buffer having a third capacity greater than the second capacity and a third threshold level greater than the second threshold level adapted to store data frames having the highest priority. The system further includes means for differentiating a data frame as having lowest, medium or highest priority and storing the data frame in the respective first, second or third buffer, and discarding the data frame in response to the first, second or third buffer reaching the respective threshold level.
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