介绍了一种家庭网络主网网关的设计和研制，外部网络通过它能实现对家庭内部网络的接入控制。
This paper introduces the design and development of a main-gateway in home network. The principal function of the main-gateway is to actualize the external network access of home network.
由于它们因特网网关的带宽限制，美国陆海空三军最近开始阻塞来自它们内部网络的，对例如YouTube和MySpace之类视频服务器地访问请求。
America's armed forces recently began blocking access to video services such as YouTube and MySpace from their internal networks, because of bandwidth limitations at their Internet gateway.
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