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Are data diodes commonly used in conjunction with firewalls?

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Mar 18, 2021 11:00 pm GMTMar 27, 2021 11:07 pm GMT
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In the diagram you showed during the PowerSession, I noticed there were firewalls. Are data diodes commonly used in conjunction with firewalls?

Asked by: - Cybersecurity

This question was posed during a recent Energy Central PowerSession: Data Diodes 101: Protecting the Grid with Hardware

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Owner Optional Solutions, LLC, Optional Solutions, LLC

March 28 2021

There is really no need to protect a diode with a firewall however many companies required jump hosts along with MFA on the red side remote access to the diode. In this case you would have a firewall on the red or external side for the jump host.

On the blue or "trusted side of the diode there could be routers or firewalls as traffic directors for multiple control systems to be able to communicated with the blue side of the diode. The configurations are countless depending on each control system's external communication requirements.

Mark Prince

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