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Site-A and Site-B need to use IKEv2 to establish a VPN connection. Site-A connects directly to the internet using a public IP address. Site-B uses a private IP address behind an ISP router to connect to the internet. How should NAT Traversal be implemented for the VPN connection to be established between Site-A and Site-B?
Correct Answer: C
NAT traversal (NAT-T) must be enabled on both gateways if you have NAT occurring on a device that sits between the two gateways. A gateway can see only the public (globally routable) IP address of the NAT device. https://www.paloaltonetworks.com/documentation/70/pan-os/pan-os/vpns/site-to-site-vpn- concepts