Proxy servers make it quite possible that the IP address visible to the server is only marginally useful, however.

但是，代理服务器很可能让服务器看到的IP地址没有意义。

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Save the code in Listing 3 so your Web server can find it and point Firefox to the address of the new PHP page through the reverse proxy.

保存清单 3 中的代码，以便 Web 服务器可以找到它并使 Firefox 通过反向代理指向新 PHP 页面的地址。

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Proxy Settings: if you access the Internet via a proxy server, you will need to specify your proxy address and proxy port number.

Proxy Settings：如果通过代理服务器访问Internet，则将需要指定代理地址和代理端口号。

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