对于受内部限制，不能通过HTTP代理连接到外部世界和公共网络上的设备的计算机，可以使用这种技术来在那些计算机之间构建一个虚拟网络。

You can use this to build a virtual network between computers that are limited internally to connect to the outside world through an HTTP proxy, through to devices outside the public network.

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虚拟网络是构建在另一个网络上的计算机网络。

A virtual network is a computer network built on top of another network.

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在虚拟空间里，这个规则意味着你不能规划一个庞大的计算机网络攻击，即使是一个军事网络，也不能够排除民用网络受到牵连。

In the cyberworld, this rule means you couldn't plan a massive computer attack, even on a military network, without regard for the civilian computer networks that would be affected by that attack.

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