huawei

William Herrin bill at herrin.us
Thu Jun 13 22:45:18 UTC 2013


On Thu, Jun 13, 2013 at 1:20 PM, Scott Helms <khelms at 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


-- 
William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004




More information about the NANOG mailing list