Why should I use a proxy server?


Why should I use a proxy server?

A proxy is a computer device that acts as an intermediary to access the Internet (or other networks). Why can this intermediary be necessary ?

A proxy server (or proxy server in French) is a filter that allows you to change the rules for accessing a network like the Internet, because of the risks that a “normal” connection may represent in some cases. It can be used by professionals, but also by individuals. Without necessarily detailing its technical operation, here are the uses of a proxy.

Hide his IP address

The proxy is often used to obtain confidentiality on the Internet: each visited website collects our IP address (eg that of the Internet box used), which makes us potentially traceable. With the intermediary of a proxy, it is no longer our personal IP address that is served, but that of the proxy. Discretion assured ! Although …

Go around web censorship

Access to specific websites may be prohibited in some countries, either because the Internet is severely supervised by a totalitarian regime, or because certain content is reserved for specific geographic areas (eg replay of TV series in USA).

The use of a proxy then makes it possible to deceive a server targeted at our geographic origin: a French Internet user can for example provide an American IP address, thanks to the intermediary of a proxy.

Speed up the display of web pages

A proxy can keep the most frequently visited pages in cache, which allows them not to be systematically recharged when a user requests them.

For example, if a large company identifies certain sites as being very popular with its employees, it may decide to place the URLs (addresses) of these sites in the proxy cache. This will then lead to performance, in terms of Internet or network access. Unless the sites in question are facebook.com, laredoute.com or vacations.com, but that’s another story …; -) Unless it concerns the next point !

Block access to certain websites

A proxy also allows you to set up a black list of websites. For example, a company may feel that its employees have nothing to do on Facebook or Chatroulette (Yes, it’s questionable, but let’s admit) : the URLs of these sites can then be designated as prohibited in the parameters of the proxy, to encourage employees to do what they are actually paid for !

In short, the proxy is a device that allows you to customize network access rules (eg Internet), or to ensure confidentiality online. There are many proxy-free proxy uses (but how do you know if they are trustworthy ?), or the possibility of setting up your own proxy yourself (which a little more “ticky”). In both cases, you must then configure your Internet browser to specify that you must now go through the proxy to display web pages.

To know the precise functioning of a proxy, and to know the limits of such a device, do not hesitate to consult our theoretical file “What is a proxy ?”, As well as his little sister,” What is a VPN ?” .

TAGS personal informationinforminternetpedagogieréseau


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