What is a vpn and why use a vpn?

What is a vpn?

VPN

The VPN is a virtual private network that allows connecting two or more networks.

To keep it simple, because it is the purpose of this blog, it keeps on the same network while away. You can connect several servers with vpn and transfer documents so secure.

Indeed, the VPN is a tunnel that encapsulates the data to make them pass so secure. According to the protocols used by the VPN to transmit data, your communication is more or less secure.

Here are some protocols that enable data encryption PPTP, OpenVPN, L2TP, IPSec, SSH...

This may sound technical, but we will see that you can use a vpn for uses other than the creation of a network between multiple PC / Servers:

Why use a vpn?

It is now necessary to use a vpn to be able to surf anonymously.

The main uses of a VPN:

Watch tv foreign: If you are in France, you can watch TV in the United States by changing your IP address to an IP address U.S... If you like Englishwomen chains, you can also look at using a service vpn.

Download anonymously: If you're a fan of downloading torrent or P2P, know that you can hide your identity with a vpn. Indeed, it will replace your real IP address with a new one that will not allow the authorities to trace you.

Unblock websites: You may experience crashes, either in your country or just business or school. To bypass the blocking of a site like Facebook, Twitter (works with all sites), you can use a VPN, which will allow you to access these sites because your connection will no longer pass through the network in your country / business / school.

Secure data: With encryption protocols that are used by a VPN, you can send files while on they will not be intercepted and read by third person.

Use a VPN service

You know what a vpn, but concretely how to use every day?

It's pretty simple and you do not need to be a computer to put in place.

When we speak of a vpn, made ​​in, we must speak vpn service. This service is provided by a service provider. This provider proposes vpn services free or paid.

The supplier also offers software that is installed on your computer. You should know that these programs are often compatible with the Mac, but with smartphones (iPhone, Android etc).

This software allows you to choose and change IP address and identity on the Internet. You just have to launch the software, click on the server (for your new ip) or the country you want to be, choose your encryption protocol and start the connection.