Virtual private network

Virtual private network 

A virtual private network extends a private network across a public network and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network.

It is a  service that protects your internet connection and privacy online.

VPN (Virtual Private Network) protects your connection while you're using the internet. It makes your browsing private, hides your IP (Internet Protocol) VPN, or virtual private network, is a secure tunnel between your device and the internet. VPNs protect you from online snooping, interference etc.