0引言随着互联网的不断普及和广泛应用,互联网在给我们生活带来许多便利的同时,网络安全问题给我们带来了许多的麻烦。在诸多网络安全问题中,最常遇到的就是网络监听。网络监听原本在协助网络管理员监测网络传输数据、排除网络故障等方面具有不可替代的作用,因而一直倍受网络管理员的青睐。然而,网络 0 Introduction With the continuous popularization and extensive application of the Internet, the Internet has brought many conveniences to our life at the same time, the network security problems have brought us a lot of troubles. Among the many cybersecurity issues, the most commonly encountered is network snooping. Network monitoring was originally in assisting network administrators to monitor network transmission of data, troubleshooting and other aspects of the network has an irreplaceable role, which has been much the network administrator’s favor. However, the network