[KaiserPro]

but why do you want NAT? to hide whats in the datacentre?

I mean thats what reverse proxies are for, if you're that worried.

NAT doesn't give you anything useful, apart from the veneer of security. Sure it feels like your safe because there isnt a direct routable link between host A and the outside world, but thats not actually true.

If you want that, then you need firewalls and reverse proxies, even in IPv4.