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A comment on US passes emergency waiver over fuel pipeline cyber-attack. Parent comment

Re:US passes emergency waiver over fuel pipeline cyber-attack by brians on Sunday May 09, 2021 @11:03PM (#27102264)
That can work. Or you can have A use TCP to B, C use TCP to D, and B and C are connected by a very short one-way cable, maybe something optical.

The US government term of art for this pattern is a “guard”, often with a regex or manual filter.

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