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建立在HTTP、TCP/IP、MIME、FTP等开放式协议基础上的Internet在近几年飞速发展,其主要原因是这些协议结构简单,主要解决了异构计算机、异构操作系统和异构通讯网络的互联、互通和互操作的问题,非常容易得到推广,但对网络系统安全与防范并不十分完善。在网络日益普及的今天,网络安全问题也就突显出
The Internet, which is based on open protocols such as HTTP, TCP / IP, MIME, and FTP, has been rapidly developed in recent years due to its simple structure and mainly addresses heterogeneous computers, heterogeneous operating systems and heterogeneous communications Network interconnection, interoperability and interoperability issues, very easy to get promotion, but the network system security and prevention is not perfect. Today, the increasing popularity of the Internet, network security issues will be highlighted