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Question 52 - ICS-SCADA Cyber Security discussion

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

A.
3
Answers
A.
3
B.
1
Answers
B.
1
C.
None of these
Answers
C.
None of these
D.
2
Answers
D.
2
Suggested answer: D

Explanation:

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'.

asked 18/09/2024
Sean Frenette
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