Web proxy servers:
definition, types and advantages
If ever you're interested in the world of servers, certainly more than once you read the word "proxy" somewhere and you did not have very clear what it was. What is a proxy server? What do they tell us when they talk about enable or disable a proxy? For those who are not computer and do not know how this goes well, it is logical that sometimes you can lose in the jargon used in many items.
However, in this post I will try to explain simply what is a proxy server or why it is interesting to use in a number of cases. Let's start with a basic definition.
Defining Proxy To give you a clear idea of ??what a proxy, we go to Wikipedia and see its most basic meaning: "This is a software that serves as an intermediary between client and server." Or put another way, the proxy (B) is responsible for sending customer requests to Server C.
I guess you have at least a clear idea of ? What a client computer and a server computer. When you connect to the Internet, and write a web address, your computer is a "client" that is sending a request to a web server to run and you can read through a certain protocol, part of the hard disk that server.
Well, I suppose that when you establish the connection to the server, rather than directly to the server, you do it through a gateway or intermediate server.
That is, you write a web address or an IP in the address bar of Internet Explorer, for example. The browser sends that request to your proxy server, and this in turn forwards the request to the server end, the answer will be before through the proxy, rather than going directly to you. That is, nothing more and nothing less than to have a proxy server.
Example: You have a computer network in your business, and among them, You have a proxy server. When you connect to the Internet from any computer, it sends requests to your proxy server. Only the public IP of your server is known, not your computer. Types of proxies There are several types of proxies, depending on where are installed and who sets the policy of the proxy. For example:
Internal or local proxies, that are installed on a client computer and are especially oriented to control traffic and prevent private information from a computer or computer network exit. The proxies also called filtering.
External Proxies: are installed in an external entity to the computer or computers from which connections are made. We can ride ourselves on your own server, or use a dedicated server. There are cheap dedicated servers can manage yourself and act as a gateway. All this for what it does, tell me? Is there any advantage to use an intermediate server or gateway to intercept client requests and send them to a server? Yes, yes it does, and many people use it. Let's see what advantages involves installing a proxy server. Advantages of proxy servers Have a proxy has a number of advantages for users, such as the following:
Better control: the proxy that is responsible for doing the work-records requests computers, IP, the time in which applications have been made, the ports that have been used, the protocol With a proxy, is may limit the rights of users. Top speed: the proxy acts as a cache: saves requests responses to give to users when they request it.
Filtering can configure the proxy to not attend certain requests, both external, such as a computer local area network. This is helpful for computer security by preventing certain responses.
Modification: The proxy can also change or falsify information according to an algorithm. Anonymity: If when we connect to the Internet, send requests to a proxy, the IP of our computer is much harder to track. When you activate a proxy, you are sailing virtually anonymously.
Therefore, we must understand that the proxies help improve the performance of our network connections, to better distribute the load and save bandwidth, to create caches static content and improve the security of our Internet connections. conclusions Proxies are somewhat less secure than VPN for "anonymous surfing" because only mask your IP, even faster. However, the use of proxies to hide IP or for security reasons and to improve performance is still widely used by users.
In local area networks to connect to the Internet, which often is done it is create a wireless network, rather than a single proxy server to connect to the Internet and connect with this client computers by cable. In some companies an external proxy server is used, not so much for the Internet, but to follow a particular security policy and privacy (avoid unwanted outgoing connections and incoming).
Everyone has their reasons and ultimately can decide what use wants to give mainly, but not everyone uses them. Do you use the web proxy servers? What advantages and disadvantages find them?