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Eccouncil Exam ICS-SCADA Topic 5 Question 9 Discussion

Actual exam question for Eccouncil's ICS/SCADA Cyber Security exam
Question #: 9
Topic #: 5
[All ICS/SCADA Cyber Security Questions]

How many firewalls are there in the most common ICS/SCADA architecture?

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Suggested Answer: D

The most common ICS/SCADA architecture typically includes two firewalls. This dual firewall configuration often involves one firewall placed between the enterprise network and the ICS/SCADA network, and another between the ICS/SCADA network and the plant floor devices. This arrangement, known as a 'demilitarized zone' (DMZ) between the two firewalls, adds an additional layer of security to help isolate and protect sensitive operational technology (OT) environments from threats originating from IT networks. Reference:

National Institute of Standards and Technology (NIST), 'Guide to Industrial Control Systems (ICS) Security'.

Contribute your Thoughts:

4 days ago
I'm pretty sure it's 2 firewalls. That's what I remember from my ICS/SCADA security training.
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12 days ago
I think the answer is A) 3.
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