IPv6 end user addressing

Owen DeLong owen at delong.com
Thu Aug 11 01:58:25 UTC 2011

On Aug 10, 2011, at 6:46 PM, William Herrin wrote:

> On Wed, Aug 10, 2011 at 9:32 PM, Owen DeLong <owen at delong.com> wrote:
>>> Someday, I expect the pantry to have a barcode reader on it connected back
>>> a computer setup for the kitchen someday.  Most of us already use barcode
>>> readers when we shop so its not a big step to home use.
>> Nah... That's short-term thinking. The future holds advanced pantries with
>> RFID sensors that know what is in the pantry and when they were manufactured,
>> what their expiration date is, etc.
> And since your can of creamed corn is globally addressable, the rest
> of the world knows what's in your pantry too. ;)

This definitely helps explain your misconceptions about NAT as a security tool.

Globally addressable != globally reachable.

Things can have global addresses without having global reachability. There are
these tools called access control lists and routing policies. Perhaps you've heard
of them. They can be quite useful.


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