VPN or Virtual Private Network is a private network that uses a public network such as the internet to connect the users in different locations using a cohesive network. It is widely used to connect the different branches of offices to the main office. Employees can also stay connected to their offices and continue their work while they are travelling using the network. VPN is very useful to employees frequently travelling in business trips; these business persons can check their emails, share files and complete tasks easily even while they are travelling. VPN is becoming common among organisations and they easily exchange important data with their partners and clients using the service. VPN is very useful for IT security; it enables users to securely access their organisations network. The process of encryption used in the ensures that the data is encrypted on sending and decrypted while receiving. Most organisation find VPN service very affordable and useful, it is widely used for corporate communication. It has authentication protocols that provide secure access to the data from the reach of hackers. VPN also enables users to browse websites without revealing their identity; it is becoming a common online tool for preserving privacy. Most freelance employees find VPN service quite inevitable for the convenience it provides them in accessing the private networks of the organisations they work with. Remote access VPN is known for enabling individual users to establish secure connections with a remote computer network. It is widely adopted in many corporate offices for securely exchanging data owing to its efficiency and security mechanisms.