| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a network system capable of flexibly changing an address of a subscriber to that of a different type according to a request from the subscriber. <P>SOLUTION: An address application device for applying an address to a communication device comprises: an acceptance part for accepting a request for changing to another address type from a subordinate terminal of the communication device; and a reapplication part for reapplying an address of the requested type. An address conversion device comprises: a first transfer part for transferring an incoming packet after performing address conversion; a second transfer part for transferring the incoming packet without conversion; an inner/outer distribution part for making the second transfer part function when a transmission source address of a packet from a private network to a global network is a global address, and making the first transfer part function when the transmission source address is a private address; and an outer/inner distribution part for making the second transfer part function when a destination address of a reverse packet is a global address that is not mapped to the private address, and making the first transfer part function when the destination address is a global address that is mapped to the private address. <P>COPYRIGHT: (C)2013,JPO&INPIT |
