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本文对各种防火墙技术进行了分析,并结合Windows系统的封包技术,重点研究状态检测技术的原理和包过滤机制中的实现,给出了基于NDIS中间驱动层的具有状态检测功能的主机防火墙的具体实现。
This paper analyzes various firewall technologies, combined with the Windows system packet technology, focusing on the state detection technology and packet filtering mechanism in the realization of the NDIS intermediate driver layer is given with stateful detection of the host firewall Implementation.