Information security – Access control or authentication – Network
Reexamination Certificate
2011-08-16
2011-08-16
Hoffman, Brandon S (Department: 2433)
Information security
Access control or authentication
Network
Reexamination Certificate
active
08001583
ABSTRACT:
A system provides definitions of network states, and identifies a cause for the anomaly upon detection. A traffic measuring portion (characteristic quantity generating portion) counts the number of packets/time slot classified by traffic type with respect to network traffic, generating a characteristic quantity; a memory portion stores information about the characteristic quantity; a portion calculates correlation coefficients between each pair of characteristic quantities classified by traffic type; a portion generates a histogram from correlation coefficients; a portion for determining the severity of an anomaly based on the histogram; a portion evaluates the similarity of an anomaly of interest to a reference anomaly using the occurrence probabilities of correlation coefficients; and a portion assigns a color to each pixel according to its occurrence probability value, generating an n×n picture. Visualization of network state is achieved using probability distribution vectors derived from correlation coefficients obtained from each characteristic quantities pair.
REFERENCES:
patent: 2006/0182039 (2006-08-01), Jourdain et al.
Nemoto Yoshiaki
Tsunoda Hiroshi
Waizumi Yuji
Hoffman Brandon S
Tohoku University
Young & Thompson
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