毕业设计论文－反病毒的

随着网络技术的不断发展，出现了大量的基于网络的服务，网络安全问题也就变得越来越重要。ACL即访问控制列表，它是工作在OSI参考模型三层以上设备，通过对数据包中的第三、四层中的包头信息按照给定的规则进行分析，判断是否转发该数据包。基于ACL的网络病毒的过滤技术在一定程度上可以比较好的保护局域网用户免遭外界病毒的干扰，是一种比较好的中小型局域网网络安全控制技术。

本设计重点从计算机网络病毒的出现、基本特征以及发展现状的角度出发，比较深入的研究了相关网络安全技术，深入分析了当前几种严重影响网络性能的网络病毒，结合ACL的工作原理，制定了相应的访问控制规则列表，并且通过模拟实验，对ACL的可行性进行了相应的测试。

-Design graduate thesis- with the anti-virus network technology continues to develop, a lot of Web-based services, network security issues have become increasingly important. ACL or access control lists, it is work in the OSI Reference Model for three more equipment, the data packet through the third, four of Baotou information according to the rules, to determine whether the transmitted data packets. Based on ACL network virus filtering technology will be able to better protect users from the outside world LAN virus interference is a relatively good small and medium-sized LAN security control technologies. The design focus from the computer network virus with the basic features of the status quo of the development perspective, more in-depth studies to the relevant network security technol