How VPN Works? 1,461 Views
VPN protects your privacy by creating a secure tunnel across the Internet between you and your Internet destination. This tunnel is created by first authenticating your device (a PC, tablet, or smartphone) with a VPN server. The server, which you can run yourself with programs such as OpenVPN, then uses one of several encryption protocols to make sure that everything sent between you and websites and Internet services can't be monitored. It does this by creating an encrypted tunnel, which is like putting a package into a box and then sending it to someone. Nobody can see what it's inside the box until it's opened or decrypted.
These VPN protocols run as a lightweight server program. VPN providers run multiple VPN servers on virtual machines (VMs) or containers. This enables them to serve tens of thousands of clients from their data centers without spending a fortune on servers. You normally can't choose which protocol to use within the VPN software itself, but you can certainly choose a VPN that offers one of the more secure protocols. Paid-for VPN services, such as Buffered, can also mask your IP address, meaning you’re harder to track down online than if you used a free service such as CyberGhost.
The process of connecting to a VPN is incredibly simple. First you connect to the internet via your ISP, and then simply initiate a VPN by using a client or connecting to a specific server your company might be using. There are also various security systems that VPNs use, of which you can find a complete rundown on Wikipedia, but the most common is a Secure Shell (SSH) connection. SSH connections are used to circumvent government content filters, such as the block on YouTube and Twitter in Tehran. SSH connections are also useful for accessing American Netflix and HBO Go services, as they mask your IP address in the process.
Updated : Thu 26 Mar 2020