The Basics of VPN

The question of the best way to describe or define a VPN is certainly one that is certainly often up for discussion amongst today’s network consumers and communications providers. Whenever we glance at the literal definition of the words virtual private network, it will also help to understand what is, and what is not, a VPN.

Using Webster’s dictionary definitions with the component words, a VPN must have these attributes:

Virtual – understood to be “being such practically or even in effect, but not actually , or name.” Therefore, the first part with the solution to our question “what is often a VPN” is that it is one thing that acts as being a hard-wired network, but is definitely not.

Private – thought as “of, owned by, or concerning a particular person or group; not common or general.” So, a VPN must be one where the consumer has exclusive use of the network links. (Note, this really is not the same as a Secure Network, which can be an individual or public network.)

Network – defined as “a system of computers interconnected on the phone wires or other means to be able to share information.” This can be the goal of a VPN or some other sort of network.

VPN explained in this way is a network technology giving the owner the opportunity to share information online websites about the network using a private, exclusive link that is certainly developed by a technique apart from hard-wires or leased lines; usually online. Ahead of the internet, computers in different offices, cities and even countries could only speak with the other person like people could – through telephone wires. As the needs just for this type of communication grew, telephone lines became replaced by higher volume wires, like T3 circuits, nevertheless the concept was the same.

For computer A to speak with computer B, there must be an actual physical wire connection. For security reasons, you need to be sure that only your 2 computers used that line, which means you would hire a vendor to “lease” that circuit. However, such a network was expensive and hard to grow, not to mention difficult for your client to possess control over.

With all the coming of the net, connections no longer needed to be physical. Providing each computer has access to the internet, information can be shared using local ISP circuits, across the internet, and to the recipient in exactly the same way that it was when the computers were physically connected. This is the reason the best way VPN works is regarded as a “virtual” network; the whole connection is not hard-wired.

The aspects of VPN explained in the following paragraphs thus far haven’t yet discussed a constantly present concern these days – security. In the old WAN arrangement, the safety of knowledge transmission could rely positioned on the provider’s guarantees. Today, however, a VPN keeps information private through encryption for both the sending and receiving end. There are a number of encryption protocols, determined by exactly what a company’s needs are, who they must communicate with (and for that reason be appropriate for), etc. The info is not just encrypted, but it is encapsulated, meaning it really is mailed in a unique private “tunnel” or connection over the internet. No one can see the data, as well as when they could, they cannot decipher or change it out. In this manner, information can be sent over the internet without having to be susceptible to interception or corruption by those people who are outside of the VPN.

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