[146867] in North American Network Operators' Group
Re: OT: Traffic Light Control (was Re: First real-world SCADA
daemon@ATHENA.MIT.EDU (Brett Frankenberger)
Wed Nov 23 21:00:42 2011
Date: Wed, 23 Nov 2011 19:59:31 -0600
From: Brett Frankenberger <rbf+nanog@panix.com>
To: Jay Ashworth <jra@baylink.com>
In-Reply-To: <11179221.140.1322088308090.JavaMail.root@benjamin.baylink.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Wed, Nov 23, 2011 at 05:45:08PM -0500, Jay Ashworth wrote:
>
> Yeah. But at least that's stuff you have a hope of managing. "Firmware
> underwent bit rot" is simply not visible -- unless there's, say, signature
> tracing through the main controller.
I can't speak to traffic light controllers directly, but at least some
vital logical controllers do check signatures of their firmware and
programming and will fail into a safe configuration if the
signatures don't validate.
-- Brett
