在当今的计算机世界，因特网无孔不入。为应付“不健全”的因特网，人们创建了几种安全机制，例如：访问控制、认证表，以及最重要的方法之一：防火墙。-In today' s computer world, the Internet pervasive. To cope with the " no sound" of the Internet, people have created several security mechanisms, such as: access cont

The IP(Internet Protocol) is the most widely used communications protocol.Because it is the most pervasive technology.It is the focus of hundreads of thousands of IT professionals.

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