Many network protocols include encryption, but not all Internet traffic does. An attacker may therefore be able to intercept and change data as it flows over a network. Fortunately, virtual private networks (VPNs) ALLEVIATE this issue. VPNs are used to establish a safe and secure connection  (private connection) between two points and allow them to communicate securely over a public network. In ESSENCE, VPNs provide a private, encrypted connection between two points - without stating which points they should be. As a result, VPN services can be used for a variety of purposes:

• Site-to-Site VPN: This type of VPN enables secure communication between two geographically dispersed sites.
• Remote Access VPN: This type of VPN connects remote users to a corporate network in a secure way. 
• VPN as a Service (CLOUD VPN): This kind of VPN is hosted on a cloud-based infrastructure. Packets from the client enter the Internet through that cloud infrastructure rather than the client's LOCAL address.