Learn How VPN Works And The Different Types Of Vpns

Virtual Private Network or simply VPN is the program that creates encrypted and secure connection over a less secure network like the public internet services. It uses the tunnelling protocols in order to encrypt the data at the sending end and again decrypt the data at the receiver’s end. In order to offer the added security, the receiving and originating networks are required to be encrypted in Top 10 Ranked VPNs for the year (2020). VPN is common used today to offer the remote corporate employees, freelance workers and business trawlers with the access to the software apps that are hosted on selected proprietary networks. It allows them to gain access to restricted or protected resources and for this the users are required to be authorized to use the VPN apps. VPN Apps are widely used today by individuals, especially those who want to safeguard the data transmissions on mobile or websites that are restricted geographically.

How Does VPN Works?

At the basic level, the VPN tunnelling works to create the point to point connection which can’t be used or assessed by unauthorized individuals. In order to create the tunnel the end device needs to be operated on the VPN client at local level or in cloud. The VPN client that is running at the background is usually not noticeable to the end users until any performance issue occurs.

There are many factors affecting the performance of the VPN, of which the most common is the user’s internet connectivity, the type of encryption the VPN is using and the types of protocols ISP is using. In Enterprise, the performance quality can be impacted adversely by the poor quality of service which is beyond the control IT department of the company.

There are different types of VPN protocols which ensure to deliver optimal level of security to the systems connected to it when the underlying network is unable to provide the required security. You will come across with different protocols which are being used today to encrypt and secure the corporate and user data. Some of these protocols are:

  • SSL or Secure Sockets Layer and Transport Layer Security or TLS
  • IP Security or IPsec
  • Layer 2 Tunnelling Protocol or L2TP
  • Point to Point Tunnelling Protocol or PPTP
  • OpenVPN

The Different Types of VPNs

Remote Access VPN – It is the VPN client that connects you to the VPN Gateway Server on the company’s network. For this the device needs to authenticate the identity prior to granting the access to its internal network resources. Remote Access VPN Client actually depend on either SSL or IP Security to secure its connection.

Site to Site - Site to Site VPN is the client that uses the gateway device to connect a network in one location to the network of another location. Here the end device needs no VPN client as the gateway controls the connection itself. It is connected over the internet using the IPsec. It is commonly used for those who use carrier MPLS clouds in place of public internet.

Mobile VPN – It is the VPN server which actually sits on the edges of the company network, thereby allowing the secure tunnelled access by the authorized and authenticated VPN clients. Here the Mobile VPN Tunnels are not actually linked to the physical IP addresses; instead it is tied to a logical IP address. The logical IP address actually sticks to mobile device regardless of where it is roaming.

Hardware VPN – This VPN offers a variety of advantages over software based VPN. It enhances the hardware VPNs and security and offers the load balancing so as to handle the larger clients load. Its administrator is managed by the web browser itself and it is the most expensive compared to the software VPN. Since it is costly, the Hardware VPNs are offering more realistic options for businesses. Some of the vendors are even offering devices that work as the hardware VPNs.

These were some of the commonly used VPNs, but there are also many other options which are worth considering. This includes VPN Appliance, Dynamic Multipoint Virtual Private Network, VPN Reconnect and more. You may consult your IT professionals to learn about the right VPN service for your organization.

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