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A VPN gateway is a type of networking device that connects two or more devices or networks together in a VPN infrastructure.
It is designed to bridge the connection or communication between two or more remote sites, networks or devices and/or to connect multiple VPNs together.
A VPN gateway can be a router, server, firewall or similar device with internetworking and data transmission capabilities. However, in most cases, a VPN gateway is a physical router device.
The VPN gateway is generally installed on the core VPN site or infrastructure. The VPN gateway is configured to pass, block or route VPN traffic. It provides core VPN-specific networking services such as IP address assignment and management, dynamic and static routing and the maintenance of routing tables.