[Gllug] OT: Kindle Networking

[Richard W.M. Jones]

On Wed, May 18, 2011 at 04:30:34PM +0100, Mick Farmer wrote:
> Does this imply that my Kindle is contacting Amazon on a
> regular basis?

All it would need to do would be to hold a TCP connection open.  If
your firewall is sensible (and not all are) you don't even need to
send any packets regularly on the connection -- the fact of having
opened a TCP connection causes your firewall to remember the port
mapping in memory and it will happily forward incoming packets to the
Kindle.

I'm not saying this is how it works, just that it's one way it might
work.  You can find out easily enough (if your firewall runs Linux) by
listing out current connections:

 netstat -M

Rich.

PS. Any Google search with "kindle" or "ebook" in it seems to be
totally full of spam, maybe the first sign that Google really is
"doing an Altavista" ...

-- 
Richard Jones
Red Hat
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