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A user at an external system with the IP address 65.124.57.5 queries the DNS server at 4.2.2.2 for the IP address of the web server, www.xyz.com. The DNS server returns an address of 172.16.15.1. In order to reach the web server, which Security rule and NAT rule must be configured on the firewall?
Correct Answer: A
The addresses used in destination NAT rules always refer to the original IP address in the packet (that is, the pre-translated address). The destination zone in the NAT rule is determined after the route lookup of the destination IP address in the original packet (that is, the pre-NAT destination IP address). The addresses in the security policy also refer to the IP address in the original packet (that is, the pre-NAT address). However, the destination zone is the zone where the end host is physically connected. In other words, the destination zone in the security rule is determined after the route lookup of the post-NAT destination IP address. https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/networking/nat/nat-configuration- examples/destination-nat-exampleone-to-one-mapping