Packet extraction method, packet extraction device and packet extraction program

摘要

PROBLEM TO BE SOLVED: To extract a series of sequences over different protocols.;SOLUTION: A packet analysis part 11 reads out a packet from a packet data storage part 2, and classifies a SIP packet into a first condition management part 12 and classifies a Megaco packet into a second condition management part 14 depending on a protocol type of the readout packet. The first condition management part 12 and the second condition management part 14 respectively associate packets having the same first or second identifiers described in each packet as a sequence, with respect to the SIP packets and the Megaco packets, respectively. A comparison management part 16 compares connection IP addresses of the packets between the associated sequences, and in the case that there are packets in which the same connection IP address is described, brings those sequences together to store the packets in a comparison result storage part 17 as a series of sequences. Thereby, the series of sequences over different protocols can be extracted.;COPYRIGHT: (C)2013,JPO&INPIT