Submitted by Eric Byres on Wed, 2010-11-17 14:44
It is easy for me to forget that just because I have taught a concept at one or two conferences, not everyone in the world has heard it. This was driven home with amazing clarity at the Hirschmann Critical Network Design Conference back in September when a participant asked me:
We use computers with two network cards as security between the control system and the business system. Is that a good idea?
