Re: huawei

[William Herrin <bill () herrin us>]

On Thu, Jun 13, 2013 at 1:20 PM, Scott Helms <khelms () zcorum com> wrote:
> if one of my routers starts sending cat
> photos somewhere, no matter how cute, I'm gonna consider that suspicious.

Hi Scott,

If once every 24 hours or so your router borrows the source IP of a
packet it recently passed and uses it to send a burst of 20
intentionally unacknowledged packets containing a cat photo, your odds
of noticing are very close to zero and your odds of tracing it to the
router are even worse.

Implementing a magic-packet remote kill switch is even easier... and
completely undetectable until used. With a little effort you could
implement it in the forwarding hardware where even a thorough analysis
of the firmware image can't detect it.

Regards,
Bill Herrin


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William D. Herrin ................ herrin () dirtside com  bill () herrin us
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