ROUTER DEVICE, PACKET CONTROL METHOD BASED ON PREFIX MANAGEMENT, AND PROGRAM

摘要

The present invention prevents packets including prefixes that essentially should not be used from being transmitted. A router device (1) comprises: a prefix management unit (5) which creates a filter condition including a condition for passing or blocking packets from a node (3), said filter condition being created in accordance with a prefix assigned by a prefix assignment device (2) and a prefix in a transmission source IP address received from the node (3); and a filter unit (6) which passes or blocks packets from the node in accordance with the filter condition created by the prefix management unit (5).