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A VPN connection refers to the process of establishing a private and secure link or path between one or more local and remote network devices.
A VPN connection is similar to a WAN connection, but offers more privacy and security.
A VPN connection is generally established through a VPN manager (client/server) that utilizes networking protocols such as Point-to-Point Tunneling Protocol (PPTP) and Layer 2 Tunneling Protocol (L2TP). The VPN connection typically exists between the VPN client and server device. It creates a VPN tunnel between both the local and remote device, and ensures a secure communication between them. The VPN connection is only established when the client device authenticates itself on the VPN server or gateway.