VPN Explained - The Basics of VPN Simplified

The question of how exactly to explain or define a VPN is one that is often discussed in today's network consumers and communications companies. When we look for the literal definition of the words virtual private network, it can help to understand what is and what is not, a VPN.

With Webster's Dictionary definitions of the component words, a VPN should have the following characteristics:

Virtual - defined as "being such practically or actuallyif not in fact or name. "So the first part of the answer to our question" What is a VPN is that it is something like a hard-wired network, but not really.

Private - defined as "the one belonging to, or in relation to a particular person or group, not common or general." How should a VPN is a left where the consumer has exclusive use of the network. (Note that this assumes a secure network, which is different to a private or publicNetwork.)

Network - defined as "a system of computers connected by telephone lines or otherwise connected together to share information." This is the goal of a VPN, or any other type of network.

VPN explained in this way is a network technology, which the owner the opportunity to share information with others across the network through a private, exclusive connection that is created by a method other than hard-wires or leased lines, usually over the Internet. BeforeInternet, computers could talk in different offices, cities or even countries only with each other, how could - through telephone lines. As the demand grew for this type of communication, telephone lines has been replaced by higher volume wires, like T3 circuits, but the concept was the same.

For computer A to talk to computer B, it had to have a physical wire connection. For security reasons, you would ensure that only your 2 computers used that line, so you would contractto lease with a vendor "," the circuit. But this type of network was expensive and difficult to expand, not to mention difficult to control for the customer are.

With the advent of the Internet, there are no more connections required to be physically. As long as each computer has access to the Internet, information can be exchanged with a local ISP circuits over the Internet to the recipient in the same way that when the computers were physically connected. For this reason,the way VPN works is not hard-wired as a "virtual" network, the entire compound.

The aspects of the VPN described in this article not yet been discussed at an ever-present concern in today's world - security. In an old WAN configuration, the security of data transmission could well depend on the guarantees of the provider. Today, however, a VPN encryption keeps your private information on both the sending and receiving end. There are a variety ofEncryption protocols, depending on what the specific needs of companies with whom they must communicate (and thus compatible with), etc. The data are not only encrypted, but it is encapsulated, meaning it is sent in its own "tunnel" or connect over the Internet. No one can see the data, and even if they could, they can not read or modify. In this way information over the Internet without being vulnerable to interception or corruption by those who are sent outside thethe VPN.

To create a virtual private network, you need to decide who to share information, in which direction and how often. First, you need a list of hardware and software systems to prepare are currently using at each location. They could very well make necessary changes so that the computer can talk to each other well. You want also to consider how important it is that your data remains safe, as this has implications for whatProtocol type you've selected. Preparation of the information you need for the discussions that you need to have trained with potential suppliers.

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