It is a virtual network that creates a safe network connection with a public network like the internet or a private network owned by a service provider
Large scale corporations, institutions related education, and government agencies use VPN technology to allow remote users to connect securely a private network.
A VPN is able to connect multiple sites in a large distance just like a Wide Area Network.
VPNs are frequently used to expand intranets worldwide to spread information and news to a wide user base.
Educational institutions use VPNs to connect campuses that can be circulated across the country or around the world.
In order to increase access to the private network, a user must be genuine using a unique identification and a password.
An authentication token is frequently used to get access to a private network through a personal recognition number (PIN) that a user must enter.