Re: SCADA

["Daniel E. Hassler" <hassler () speakeasy net>]

Forgive my ignorance but why is SCADA even allowed to run on a Windows 
host? IMHO - when industry insists (i.e. $$$ on the table) on secure 
alternatives can and will become available.
Remote SCADA logging can be done securely over the Internet with 
authentication, confidentiality, integrity, and non-repudiation. Delays 
can happen but data will never be lost. It's a one way street from 
device(s) to logger(s).
Real-time SCADA control should be confined to a LAN/intranet where 
complete network/power redundancy and backup systems are also controlled 
by the site. The Internet is not 100% reliable for real-time control 
(e.g. San Jose area last week). I did not lose any log data. I lost 
visibility of a couple of systems for a while. When the connection came 
back the missed data points were filled in - as designed.
I'm not trolling - I'm actively solving these problems and welcome 
comments from those who are also.

Sincerely,

Dan Hassler
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