The Domain Name System,named DNS,is used by TCP/IP application to map between hostnames and IP addresses, and to provide clectronic mail routing Information. DNS, exploited a vulnerability,is prone to become a primary target for attacker.

• 域名系统(DNS)用于主机名和IP地址之间的映射及电子邮件的选路信息,但由于其本身暴露脆弱性,致使域名服务器易受到攻击,将会造成严重的后果。