If you are Internet user or if you work remotely, probably you have already used proxy for many times but did not know about it. Now we will tell what a proxy server is, how it works and how to use it more effectively.
At the beginning, proxy servers were used to work on the Internet without personal IP-address. Now its functionality is widen and better optimized. In short, the proxy server is a mediator between a user and remote computer to what he is connected. The proxy can be set on local user’s computer or anywhere on the Internet. The main task of proxy is to intercept clients’ requests and redirect them to destination servers or respond from proxy’s cache. At the beginning, it looks like a waste, but actually proxy has a lot of benefits.
Actually, proxy servers might be used anywhere and by anyone if it comes to the next several purposes:
To solve some tasks user needs to use different proxy servers. Thus, most of the users know, that proxy-servers are separated on transparence, anonymous and of high anonymity; their functionality is determined by other signs. There are several main types of proxy, which are worthy to be described in detail.
HTTP-proxy. It is the most widespread type of proxy. It is used to provide correct functionality of browsers and other programs, which are using the TCP-protocol. Its main functions are:
• Caching files and media content;
• Access restriction;
• Content filtering;
• Speed restriction;
• Logging and traffic control.
All data, which is transmitted via HTTP-proxy is easy intercepted by ISP or cyber-criminals:
• HTTPS-proxy. It is the same as HTTP-proxy, but with SSL-protocol support for safe connection. Traffic that pass through HTTPS-proxy is strong encrypted in the client’s browser, therefore no one knows, what data is transmitted.
• SOCKS-proxy. It is the most progressive proxy-server, to data transmission. It works via SOCKS-protocol, which was developed specially to secure work with any protocols and any data or internet-services. The special feature of the Socks-proxy is an ability to provide a connection of a client with a server, which is behind a firewall. Now two versions of the Socks-proxy are available. They are based on Socks4 and Socks5 protocols. The last works via TCP and UDP, supports login/password authorization and remotes DNS-requests.
At the end it is needed to point out two main items. Free proxy is more anonymous, but not reliable or secure, because of the way of its creation. No matter what type of proxy is used, high-level protection or anonymity is possible when VPN is also used.