[Gllug] OT: Kindle Networking

[Mick Farmer]

Dear GLLUGers,

At home I run a wi-fi network using DHCP to allocate IP
addresses to the various devices I use, including my recent
Kindle.

When I use one-click ordering of an e-book on Amazon it gets
downloaded to the Kindle within seconds.

How is this achieved?  My router acts as a firewall and
refuses all attempts to reach my internal network from the
Internet.  My understanding of NAPT is that it's only
successful when originating communications from inside my
network outwards.

Does this imply that my Kindle is contacting Amazon on a
regular basis?

Regards,

Mick               /"\                      
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