How VPNs Work & Why is it Important to Use One?

Last updated: February 02, 2016

how vpn workYes, we are living in an era where technological revolution is a reality. The internet has become an integral part of our life. However, one thing you need to keep in mind is that using the internet via public networks can be a really foolish idea. As you know, hackers are always looking for ways to steal your sensitive data. And at the same time, many governments across the world are trying to snoop into the privacy of the citizens in the name of national security. In such a scenario, you need to start using VPN services. 

Public networks are not reliable at all for many reasons. Let’s just take the example of your company. You are away from the office and you want to access the sensitive files. When you access it via an unprotected public network, you will be putting your company’s sensitive data at risk. At the same, your job also will be at stake. 

VPNs (Virtual Private Networks) are going to be your savior in this scenario as it will allow you to access a private network in a secure manner. You can compare VPN with the firewall on your computer. Technically speaking, VPNs are WAN only – it is just that it works for a private network.

Due to the aforementioned reasons, VPNs are hugely popular with corporations as it helps them to protect their sensitive data. Torrent users are also finding VPNs highly useful as they are able to protect their identity online. VPN services use highly effective encryption protocols to provide maximum security to the users. Also, you will be able to hide your physical location if you want. This will be very useful if you want to bypass content filters.

You need to realize the fact that it is really easy to connect to a corporate network. You will be doing it with the help of a VPN client. The VPN servers will grant access after verifying the secure key. 
When it comes to VPN services, there are so many security protocols are in place to provide many features and security. 

 

IP Security (IPSec)

It is meant to secure internet communications. There are two modes – transport mode and Tunneling mode. Overall security can be improved tremendously with this protocol. 

 

L2TP/IPSec

L2TP is the short form of Layer 2 Tunneling Protocol. This will allow you to create a highly secure VPN client. It generates tunnel to provide maximum security. IPSec protocol will be in charge of handling encryption. 

 

SSL and TLS

SSL stands for Secure Socket Layer and TLS stands for Transport Layer Security. You can see that online retailers use these protocols extensively to provide maximum security of financial transactions made on their e-commerce websites. They operate on the basis of handshake method. 

 

PPTP

It stands for Point-to-Point Tunneling Protocol. This has been in use since 1900s. Here, encryption is not involved. It simply uses a tunnel to send the data packages. Even though it is not the most secure method, one has to agree that it is still a strong method.