PROBLEM TO BE SOLVED: To perform filter setting peculiar to iSCSI communication on an IP network.;SOLUTION: Discovery domain information described with a connection relation of a TCP port number and an IP address assigned to an iSCSI node, whether the iSCSI node is an iSCSI initiator or an iSCSI target, and a group to which the iSCSI node belongs is acquired in a management server, and a filter definition with the IP address of the iSCSI node that is the iSCSI initiator as a transmission source and with the TCP port number and the IP address of the iSCSI node that is the iSCSI target as a transmission destination is created in a set of the iSCSI nodes belonging to the same group, and set to a communication device.;COPYRIGHT: (C)2006,JPO&NCIPI
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