（美）
本书以一个对基本网络与计算机安全概念的复习单元开始，专门着重于网络和数据链路层以及TCP和UDP传输协议，防火墙安装和配置实践，特定的防火墙技术、工具和技巧，虚拟专用网技术，日常防火墙的维护等。...
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