Apologies if this message is brief, it is sent from my cellphone. Begin forwarded message:

From: Nathan Ward

On 5/02/2009, at 16:58, Chris Adams <cmadams@hiwaay.net> wrote:

...

Since NAT == stateful firewall with packet mangling, it would be much easier to drop the packet mangling and just use a stateful firewall. You are just reinforcing the incorrect belief that "NAT == security, no-NAT == no-security".

Not entirely. There was a lengthy and heated debate on this list about 6 months ago, where the point was raised that many people like to use NAT because it provides some level of anonymity in thier network. Obviously this only applies for networks with enough people that that has an effect.

IPv6 has privacy addresses to address this concern.