APPARATUS FOR CONVERTING INTERNET PROTOCOL ADDRESSES, COMMUNICATION NETWORK SYSTEM AND COMMUNICATION METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an IPv4-IPv6 address converting apparatus which can overcome deficiency of public IP addresses generated because IPv4 terminals use the public IP addresses.;SOLUTION: The apparatus for converting Internet protocol addresses for converting an IP address system for inter-communication between first and second terminals each having a different IP address system includes: an address allocating unit 130 for allocating a first private IP address and a second private IP address of a first IP address format to a first terminal and a second terminal upon an access request of the first terminal; an address generating unit 140 for generating a first public IP address of a second IP address format from a hardware address of the function terminal; an address acquiring unit 150 for acquiring a second public IP address of the second IP address format corresponding to a domain name of the second terminal from a domain name server; and a control unit 110 for providing the first private IP address and the second private IP address to the function terminal.;COPYRIGHT: (C)2003,JPO