近几年来,令网络管理人员谈虎色变的网络安全问题莫过于蠕虫。蠕虫的爆发不仅导致个人电脑或服务器系统无法正常工作,还会造成网络系统的瘫痪。而系统漏洞作为网络安全的头号大敌,可谓万恶的根本。但要想在第一时间把每个漏洞都被及时修补好,基本是不可能的,即便可能做到,所需 In recent years, there has been no problem with cybersecurity that makes network administrators talk of change. The outbreak of a worm not only caused the personal computer or server system to not work properly, but also caused the paralysis of the network system. System loopholes as the number one enemy of network security can be described as the root of evil. However, in order to be the first time every vulnerability has been promptly repaired, basically impossible, even if possible, the required