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对Linux2.6下Netfilter的工作原理进行了分析介绍,同时也对防火墙和网桥的结合进行了分析,对结合防火墙的VPN安全网关在路由和桥模式下的实现进行了研究与一体化设计。
Analyzed and introduced the working principle of Netfilter under Linux2.6, analyzed the combination of firewall and bridge at the same time, researched and integrated the design of VPN security gateway combined with firewall in routing and bridge mode.