DOMAIN NAME RESOLUTION SYSTEM, DOMAIN NAME RESOLUTION SERVER, AND DOMAIN NAME RESOLUTION METHOD

摘要

Disclosed in the present invention are a domain name resolution system, a domain name resolution server, and a domain name resolution method. The domain name resolution method comprises the following steps: setting a same extensive a domain name for portal domain names that use a same server group; resolving a domain name requested by a client to a portal domain name by means of an alias; and resolving the portal domain name, and returning the resolution result to a client, as a domain name requested by the client. The present invention provides an one-tier alias recording method based on extensive domain names, which reduces the alias record resolution of a one-tier system domain name, shortens the system domain name resolution time and reduces the failure rate of the system domain name resolution compared to the existing method. The present invention also supports a special back-source configuration or other special configuration, with a small increase in configuration; and an attacked customer can be found more easily when the client is attacked.