Which of the following is a recommended default rule for IACS firewalls?

ISA-IEC-62443 V1 0 Comments

Which of the following is a recommended default rule for IACS firewalls?

Available Choices (select all choices that are correct)
A . Allow all traffic by default.
B. Allow IACS devices to access the Internet.
C. Allow traffic directly from the IACS network to the enterprise network.
D. Block all traffic by default.

Answer: D

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