ANIT-WORM-MEASURE PARAMETER DETERMINING APPARATUS, NUMBER-OF-NODES DETERMINING APPARATUS, NUMBER-OF-NODES LIMITING SYSTEM, AND COMPUTER PRODUCT

摘要

An anti-worm-measure parameter determining apparatus determines parameters for controlling timing for an anti-worm-measure means to start blocking of a communication by a worm in a network, for preventing a spread of the worm. An infectivity calculating unit calculates infectivity of the worm based on number of nodes connected to the network. A number-of-infected-nodes estimating unit calculates an expected value of number of infected nodes at a time when the worm transmits a predetermined number of packets, based on the infectivity calculated by the infectivity calculating unit.