| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a server for making DNS accessing control for each DNS registered host. SOLUTION: An authorization list 1 stores IP addresses, network addresses, host names and domain names. A comparison part 3 refers to the authorization list 1 when a DNS server takes any inquiry. An answer part 4 makes answers when the authorization list 1 authorizes any inquiry host, but makes rejection when the authorization list 1 doesn't include nor authorize the host.</p> |
