Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2006-03-02
2010-06-01
Cho, Hong (Department: 2467)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S392000
Reexamination Certificate
active
07729271
ABSTRACT:
The present invention provides a technology including, for example, a packet relay processing section to carry out packet relay, a packet sampling section to carry out packet sampling, a flow statistics counting section to take statistics of each flow, and a flow statistics generating section to generate a NetFlow export datagram, wherein the flow statistics counting section collectively counts the number of the packets or bytes received per unit time when the number does not exceed a threshold value and individually counts the number for each flow when the number exceeds the threshold value, and thereby a flow of abnormal traffic which is suspected to be DoS attack is efficiently detected with small amounts of resources (mainly memories).
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Sato Hiroshi
Tsuchiya Kazuaki
Alaxala Networks Corporation
Brundidge & Stanger, P.C.
Cho Hong
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