Answer should be D .. Outside to outside based on below : 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). https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-networking-admin/nat/nat-configuration-examples/destination-nat-exampleone-to-one-mapping

The answer is D, not B guys. We don't care about the routing table. When a paccket arrive on the outside Interface, The PAN checks first if there is a DNAT configured for this trafic, and If the trafic is allowed. Then It can proceed with the forwarding lookup (Routing table). That's why we need Outside>Outside NAT. B is totally wrong. There is no NAT on the Inside zone. FOrget the Routing table. It doesn't matter.

net 153.6.12.0/27 will be routed to inside and is not an outside ip.

I just tested it in the lab, and the answer is B. Inside. NAT uses the pre-NAT zone. The Zone is determined by the route lookup which for the destination IP is "inside".

The webserver having this 153.6.12.10 address that appears to be reachable through eth1/2 on the inside zone is a U-NAT situation - where internal users need to access a server using the server's external public IP instead of its private IP address. But, it doesn't mean that the internet users are accessing the network through eth1/2 on the firewall, as shown in route table.

The original connection comes from Outside to Outside. When it translates it to a different destination IP address, you do not specify any zone at all

Answer is D, but I get why some people are saying B, since DNAT is one of the trickiest things to get right in PAN fws. It's just a matter of knowing and remembering the NAT formula, so let me explain: Everyone voting for B is correct in that the final destination zone for the traffic is going to be inside, but that's not the question here; the question is "what should the NAT rule dest zone be set to?", basically, "what should you use as the dest zone for your NAT rule?", so they're just throwing routing in there to throw you off, because for this question routing doesn't even matter because it will happen ***after*** NAT policy lookup. If you have ever configured NAT for public access to your website, for example, you know usually source and dest zones for DNAT are the same in PAN (outside to outside); routing will take care of sending the packet to it's real destination after NAT policy is evaluated.

I think B

The routing table shows that the destination network lives on the "inside" zone and not the "outside". look at this KB: https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClGZCA0

Both the pre and post nat addresses are in the inside zone so the destination zone in the nat policy will be Inside as well.

Public IP is Eth 1/2 which is Inside Zone - Option B inside

Public IP is Eth 1/2 which is Inside Zone - Option B inside

In my opinion B is correct.

Inside as Public IP is Eth 1/2 which is Inside Zone.

The most common mistakes when configuring NAT and security rules are the references to the zones and address objects. 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). https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/networking/nat/nat-configuration-examples/destination-nat-exampleone-to-one-mapping

Answer D,because rule NAT Outside-Oustside and rule Security is Outside-Inside.

This is a bit of a tough one. The routing table shows that the destination network lives on the "inside" zone and not the "outside".