NAT is for stretching IPv4. That's it. As far as security goes, firewalls don't require it. Not only that, but I share the admittedly minority opinion that fir

NAT is for stretching IPv4. That's it. As far as security goes, firewalls don't require it. Not only that, but I share the admittedly minority opinion that firewalls are a crutch for bad system security and that we should be working to fix that problem. A system that requires a firewall to be secure is broken.