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以防火墙实现技术为背景,对Windows防火墙技术的数据包截获模块和数据包过滤模块这2大核心模块着重进行了研究,实现关于防火墙技术中的角色访问控制策略。并综合比较各种网络数据包拦截技术,针对传统过滤匹配算法的缺陷,从逻辑上将网络用户划归为不同网段,对截获到的网络数据包进行过滤处理。
In the background of firewall technology, this paper focuses on two core modules: packet capture module and packet filter module of Windows Firewall technology, and implements the role access control strategy in firewall technology. And comprehensively compares various network packet interception techniques. In view of the defects of the traditional filtering matching algorithm, the network users are logically classified into different network segments, and the intercepted network data packets are filtered.