What is a VPN and how does it work?

This is simply Virtual Private Network in full abbreviated as VPN. Its main aim is to give you maximum security as well as privacy while you browse through the Internet. As much as the Internet is exciting, it has its ups and downs.

First, it is inherently insecure: The initial design of the Internet mainly aimed at sending large data which is reliable. At that time, networking in the country and the world at large was a whole new thing, and nodes dropped down consistently. Most Internet’s communication methods were made to rotate around failure, instead of safe data. In addition to this, all the applications that you use such as Facebook, messaging, Whatsapp, Email among many others are all designed on the Internet Protocol core. Most of these applications have developed their own standards but that doesn’t mean that they are safe to use. You will realize that most of them still send out information that you would want to keep confidential. They lack privacy protection and this makes your information more vulnerable to criminals who are out there to steal your money through credit cards, banks cards or any confidential information. Also, it is important to note that there are always people who are out there to spy on you and if you do not have a safe Internet, then you might as well be doomed.

A VPN usually has a secret channel in the open Internet. The whole idea of a VPN is that anything that you send out is put through a secret communication channel and covered, meaning that even if someone gets your information, they cannot be able to know what it contains. This is a powerful tool that protects you and your data. There are no limitations though.

How VPN works

Let us begin with the basic information of Internet communication. Let’s assume you are at your office and you need to visit a website such as ZDNet. For you to perform this, your device starts a request by sending a bunch of packets. While in the office, the packets usually travel through routers and switches available on your LAN before going through the public Internet inside the router.

Once these packets reach the public Internet, they go through several computers. From here, a distinct request is put to servers which then translate the DNS which in this case is ZDNet.com to the IP address. From here, the information is then sent to your browser after which your browser sends the request again. Finally, the information arrives at the ZDNet infrastructure, which in turn routes the packets and takes a webpage and sends all of them back to your computer or any device that you are using.

Every single Internet request always results in a new series of communications from different points. In this way, a VPN operates though encryption of packets from the original point. This not only hides your data but also the information coming from your IP address. Then, the VPN where you are sends the packets to where another VPN is located at the destination point, thus covering the information. The most important thing here is to understand the limitations of a VPN as well as the endpoint of where the VPN server is.




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