6. The apparatus according to claim 5 , wherein an entry of the traffic information include address dispersion information that denotes the number of addresses accessing different destinations where packets satisfying the corresponding combination are transmitted to when the combination includes a source address and related information, or that denotes the number of addresses accessing different sources that transmits packets satisfying the corresponding combination to the destination address when the combination includes a destination address and related information.
6. The apparatus according to claim 5 , wherein an entry of the traffic information include address dispersion information that denotes the number of addresses accessing different destinations where packets satisfying the corresponding combination are transmitted to when the combination includes a source address and related information, or that denotes the number of addresses accessing different sources that transmits packets satisfying the corresponding combination to the destination address when the combination includes a destination address and related information. 7. The apparatus according to claim 6 , wherein each entry of the traffic information further includes at least one of the number of packets related traffic, a sum of bytes, the number of SYN packets, the number of FIN/RST packets, the number of access failures, or the number of access successions.