A Virtual Private Network (VPN) is an extension of a private network into the public network domain. The public network would act as a private network and the user would be able to perform every function as if logged in to the private network. It also helps to allow a remote user to work with the same security and management policies defined by the administrator of the private network. This connection is established by a virtual point-to-point connection through a set of assigned connections and encryption, or a combination of both, depending on the business requirements.
VPNs allow employees to securely log in to their private network, even if they are not in their office premises. It is secure and cost-effective.
Any kind of network connection over an untrusted network, such as the internet, would benefit from implementing a VPN. Even inside an organization...