随着高校校园网规模的逐渐扩大和系统应用的不断深入,校园网在高校的教学、科研以及管理中发挥着越来越重要的作用。但是,高校校园网具有互联性、开放性、共享性等特点,具有众多的不安全因素,如网络病毒、黑客的攻击等。校园网安全面临的威胁与日俱增,如何加强校园网的安全,是当前非常重要、非常迫切的任务。 With the gradual expansion of college campus network and the deepening of system application, campus network plays an increasingly important role in the teaching, research and management of colleges and universities. However, college campus network has the characteristics of interconnectivity, openness and sharing, and has many unsafe factors such as network viruses and hacker attacks. The threat posed by campus network is increasing day by day. How to strengthen the security of campus network is a very important and urgent task at present.