Network intrusion detection signature analysis using decision graphs
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United States of America Patent
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Aug 19, 2003
Grant Date -
N/A
app pub date -
Mar 18, 1999
filing date -
Mar 18, 1999
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Abstract
A method of detecting signatures representing misuse of a local network. Known reference signatures having one or more common events are identified, and represented with a decision graph having one or more shared nodes. Each node of the decision graph represents the occurrence of an event. Given a set of input events, test functions associated with nodes determine the path taken during traversal of the graph. A path of the graph from the parent node to a leaf node represents the occurrence of all events that comprise a signature. The decision graph permits any of the signatures to be detected with only one traversal, and avoids the need for a separate matching process for each signature. In this manner, an entire set of all known reference signatures may be consolidated into a smaller set of decision graphs.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- CISCO TECHNOLOGY, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bernhard, Thomas E | Round Rock, TX | 3 | 864 |
Lathem, Gerald S | Elgin, TX | 10 | 1504 |
Shanklin, Steven D | Austin, TX | 7 | 1290 |
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