Identifying source of malicious network messages
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United States of America Patent
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Nov 17, 2015
Grant Date -
Mar 22, 2007
app pub date -
Sep 8, 2005
filing date -
Sep 8, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
System, method and program for identifying a subset of a multiplicity of source networks. The subset including one or more source networks which have sent messages to one of a plurality of destination locations having a same IP address. For each of the multiplicity of source networks, a determination is made whether there are fewer intervening hops from the source network to the one destination location than from the source network to other of the plurality of destination locations. If so, the source network is included in the subset. If not, the source network is not included in the subset. One application of the present invention is to identify a source of a denial of service attack. After the subset is identified, filters can be sequentially applied to block messages from respective source networks in the subset to determine which source network in the subset is sending the messages.
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