Encapsulating Security Payload

The IP address of a VPN gateway is usually the IP address of the network interface that connects to the Internet . You can also define a secondary IP address for the interface, and use that address as the local VPN gateway address, so that your existing setup is not affected by the VPN settings.

IPsec is used for protecting sensitive data, such as financial transactions, medical records and corporate communications, as it’s transmitted across the network . It’s also used to secure virtual private networks (VPNs), where IPsec tunneling encrypts all data sent between two endpoints.

IPsec is a group of protocols that are used together to set up encrypted connections between devices . It helps keep data sent over public networks secure. IPsec is often used to set up VPNs, and it works by encrypting IP packets, along with authenticating the source where the packets come from.

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.