企业内部网络（Intranet）是企业直接控制下计算机系统和网络的集合。企业内部网络可能在地理上是分散的并且包含有多种局域网络、广域网络和移动计算机网络。今天，企业需要通过Internet获取信息、交换信息，这样企业的各个部分就有了与Internet连接的要求。Intranet网络安全 Intranet is a collection of computer systems and networks under the direct control of an enterprise. Enterprise intranets may be geographically dispersed and include a variety of local area networks, wide area networks, and mobile computer networks. Today, businesses need to get information over the Internet and exchange information so that parts of the business have the ability to connect to the Internet. Intranet network security