Proxy servers often hide or change IP addresses when accessing web sites. There are probably many reasons to do this, but let's take a look at the most common ones.
The ability to access websites anonymously. Agents like Anonymous, Elite, and Twisted have many uses, including anonymous web browsing, downloading files, chatting on forums, sending emails, and using instant messaging services, all without giving away your IP address.
To access sites that limit the number of connections or requests allowed per unit of time, many file-sharing platforms reduce the number of downloads from a single IP address for a period of time. Given the large number of users who have a dynamic IP address, someone who previously had an IP address assigned to you may exceed your service download limit ahead of time. Using proxy servers can help solve this problem. Similarly, proxy servers can help resolve services by limiting the number of requests that can be made.
Review the site from different locations around the globe. With a proxy, you can access the site and verify that it is from all over the world, as well as the availability of Internet service providers and networks.
He's circumventing Internet security. With the help of proxy servers, you can access web sites that are inaccessible due to network problems or other obstacles. For example, if a user's IP address or even all IP addresses in the country are banned, the service will not run. It also helps if a user's Internet service provider blocks access to the site.
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