In 2004, I played a few months of legend, and now I am not interested in the legend. Currently using Tung Tong's ADSL and colleagues share internet. Occasionally, our external IP address is the same (of course), it is inevitable how to distinguish between my colleagues and my machine? Oh, installing the Virtual PC, installing 2 Win95 virtual machines, and I have formed a local area network with my WinXP system. Compile a program to generate a program in the source code of "Delphi Design Proxy Server" and run it in the WinXP system. Setting IE in the Win95 system is connected by a proxy. Of course, it is a WinXP system, which is really possible to browse the network. This understands the principle of the HTTP agent: the client sends the GET request to the agent, the agent realizes the Internet, and then returns the data returned by the Internet host to the client that is requested. The legendary client is not using the HTTP connection server, but the Socket connection of the TCP / UDP protocol, then if I play the legend under Win95 system, is it necessary to use the SOCKS agent? Not. Because the SOCKS agent is set in IE to work only for IE, the legendary client is still unable to connect the server. Then how is the legend of my colleague running? We also didn't set a proxy, just set the ADSL cat to the gateway. Is the gateway and agency mean? research! It turns out that proxy servers are divided into two: Proxy and NAT network address translation. NAT Network Address Translation: Network Address Translation, convert the internal machine IP packet internal address to the Internet external address and then send it. The internal machine only needs to set the NAT server to the gateway to access the Internet! It seems that our Tietong ADSL cat is playing this NAT network address translation role! "Routing is a more powerful gateway", and our gateway is NAT, and it is an agent, huh, it is a terrible formula: routing = gateway = proxy = NAT. . . . . . . ENTER
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