Patent ID: 7010585
Filing Date: 2006-03-07
Classification: H04L

Abstract:
1. A DNS server to dynamically assign an IP address only to a terminal which is now conducting communications, the DNS server comprising: means for holding a table in which FQDNs of terminals managed by the DNS server are registered in advance and a list of IP addresses to be broad cast to the terminals managed by the DNS server; address conversion means for converting an IP address in the list of IP addresses to be broad cast to the terminals managed by the DNS server into one of an address of a data link layer and a network layer in the sense of OSI communications between the terminals managed by the DNS server, when the DNS server receives an inquiry of an FQDN; and registration means for registering the IP addresses in the table in correspondence with the FQDNs, wherein a terminal required to receive communication can receive it.