CPC H04L 47/20 (2013.01) [H04L 41/0213 (2013.01); H04L 43/0894 (2013.01); H04L 47/225 (2013.01); H04L 63/1408 (2013.01)] | 20 Claims |
1. An estimation method for controlling a bandwidth of a data flow performed by an estimation apparatus, the estimation method comprising:
acquiring first information about an aggregated band associated with a plurality of flows of data within a tunnel before shaping, wherein the tunnel allows transmission of the plurality of flows of data in packets between routers within the tunnel;
generating, based on a combination including copying and shaping the plurality of flows of data within the tunnel, a plurality of shaped flows of data;
acquiring, based on the plurality of shaped flows of data, second information about an aggregated band associated with the plurality of shaped flows of data;
acquiring, a traffic volume associated with a shaped flow of the plurality of shaped flows of data;
calculating a ratio between a first aggregated traffic volume based on the first information associated with the aggregated band of the plurality of flows of data within the tunnel and a second aggregated traffic volume based on the second information associated with the aggregated band of the plurality of shaped flows;
estimating, based on a combination including the ratio and the traffic volume associated with the shaped flow of the plurality of shaped flows of data, a traffic volume of a flow of the plurality of flows of data within the tunnel; and
determining, based at least on the estimated traffic volume of the flow of the plurality of flows of data within the tunnel and a predetermined threshold, data representing an attack in a data traffic associated with the flow of the plurality of flows of data within the tunnel.
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