A VPN, as its name suggests, is a virtual version of a secure, physical network—a web of computers linked together to share files and other resources. But VPNs connect to the outside world over the Internet, and they can serve to secure general Internet traffic in addition to corporate assets. In fact, the lion’s share of modern VPNs are encrypted, so computers, devices, and other networks that connect to them do so via encrypted tunnels.
Why you want a VPN
You have at least four great reasons to start using a VPN.
First, you can use it to connect securely to a remote network via the Internet. Most companies maintain VPNs so that employees can access files, applications, printers, and other resources on the office network without compromising security, but you can also set up your own VPN to safely access your secure home network while you’re on the road.
Second, VPNs are particularly useful for connecting multiple networks together securely. For this reason, most businesses big and small rely on a VPN to share servers and other networked resources among multiple offices or stores across the globe. Even if you don’t have a chain of offices to worry about, you can use the same trick to connect multiple home networks or other networks for personal use.
Third, if you’re concerned about your online privacy, connecting to an encrypted VPN while you’re on a public or untrusted network—such as a Wi-Fi hotspot in a hotel or coffee shop—is a smart, simple security practice. Because the VPN encrypts your Internet traffic, it helps to stymie other people who may be trying to snoop on your browsing via Wi-Fi to capture your passwords.
Fourth and finally, one of the best reasons to use a VPN is to circumvent regional restrictions—known as geoblocking—on certain websites. Journalists and political dissidents use VPNs to get around state-sponsored censorship all the time, but you can also use a VPN for recreational purposes, such as connecting to a British VPN to watch the BBC iPlayer outside the UK. Because your Internet traffic routes through the VPN, it looks as if you’re just another British visitor.