v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space

Nathan Ward nanog at daork.net
Wed Feb 4 22:53:08 CST 2009


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 at 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.



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