Internet has grown rapidly over the recent past, and businesses operations are invariably executed over the network. Securing data communications is the need of the hour, and Virtual Private Network (VPN) is an advanced network technology that secures communications over the Internet. Using the shared public telecommunication infrastructure, a VPN connects to nodes and establishes secure access between the Internet and an organization’s internal network. Substantially increasing WAN application performance, VPN, as a private network maintains privacy through employing security procedures and tunneling protocols. This section contains in-depth article about the VPN network, its construct, and uses.