Ipchains runs on the system in one of two ways : as a proxy service or as a network address translator Ipchains有两种运行方式：代理服务器和网络地址转换器。
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This update also enables users of the voice . net service to reach the telephony service from behind network address translators nats 通过此更新程序， voice . net服务的用户还可以从网络地址转换器( nat )的后面访问电话服务。
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A network address translator or ip masquerader masqing is used when you do not have enough addresses or do not want to use public internet addresses for your internal network 当您没有足够的网络地址，或者不愿对您的内部网络使用公共因特网址时，可以采用网络地址转换器( nat )或是ip屏蔽( masqing )的方法。
