The general principles of interaction between the network interface of a personal computer and the global Internet are familiar to almost every student, because the idea of this is given even in introductory computer science lessons. That's just the question "How to use a proxy?" sometimes remains unlit. The teacher is partly right, because not all Internet users need this mechanism. At the same time, for some, it seems extremely important and necessary. Today we’ll talk about how to use a proxy and give some advantages of this solution.
Let us first recall the general scheme of the Internet. The user launches a browser program on his computer and types in the search line the query that interests him. Then the browser directs it to the network interface (card, modem), which, in accordance with the rules of the Internet protocol, forms data packets from it and sends it to a specialized computer called a server. If the required information is found, a response is generated and sent to the user, otherwise the request is transmitted to the following servers. If the global network is presented in the form of a web (now such a comparison is very popular), then each server is a node in which web rays converge. It is in these nodes that all sites, all data are stored, and the rays are just communication lines.In other words, the traditional scheme is represented as:
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This additional circuit element is called a proxy server. It can be either a software or a hardware solution - the result is the same. For example, anonymous proxy servers remove user data from network packets (country of location, IP address, operating system, etc.). A prime example is the Tor project. So, just download Opera Tor, run and use it like a normal browser - all information about your computer will be cut out from the packages.But caching proxies save part of the received information, speeding up subsequent work with resources already visited. How to use a proxy server?
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We start IE and in the Tools menu follow Properties. Here we go to “Connection - Settings”. In the window, specify the IP address and port number of the proxy server. Disable use for local (normal Webmoney, etc.). Please note that if your Internet connection is through a network card, we’ll make the change in “Network Settings”. Everyone, IE and Chrome are ready to work with the proxy program. In Opera and Firefox, we set the proxy settings in the appropriate settings. For proxy programs installed on the computer, usually the address is 127.0.0.1, and the port is 8080. But how to use the proxy if it is represented by a resource on the Web? Actually the setting is the same. We find out on the proxy server website its address, port and register it in the browser.