Hashing of network packet flows for efficient searching
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United States of America Patent
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Mar 1, 2016
Grant Date -
Oct 10, 2013
app pub date -
Apr 9, 2013
filing date -
Apr 10, 2012
priority date (Note) -
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Abstract
The invention relates to a method and apparatus for efficient storing and retrieval of captured data packets. The packets are parsed to extract flow defining parameters such as source and destination addresses, the extracted addresses are hashed and the address hash numbers are reversibly combined, for example concatenated in a pre-defined order of their values to obtain a single hash index for a flow. The packets are then saved in a packet store in accordance and/or association with their hash index. The packets may be efficiently retrieved based on the two addresses or on a single network address.
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