CAS-001 · Question #264
A manufacturing company is having issues with unauthorized access and modification of the controls operating the production equipment. A communication requirement is to allow the free flow of data…
The correct answer is C. Implement an AAA solution. The core problem is unauthorized access and modification - meaning the issue is about who is allowed to interact with the controls, not about blocking network traffic. An AAA (Authentication, Authorization, and Accounting) solution directly addresses this by enforcing strong…
Question
A manufacturing company is having issues with unauthorized access and modification of the controls operating the production equipment. A communication requirement is to allow the free flow of data between all network segments at the site. Which of the following BEST remediates the issue?
Options
- AImplement SCADA security measures.
- BImplement NIPS to prevent the unauthorized activity.
- CImplement an AAA solution.
- DImplement a firewall to restrict access to only a single management station.
How the community answered
(35 responses)- A3% (1)
- B14% (5)
- C77% (27)
- D6% (2)
Explanation
The core problem is unauthorized access and modification - meaning the issue is about who is allowed to interact with the controls, not about blocking network traffic. An AAA (Authentication, Authorization, and Accounting) solution directly addresses this by enforcing strong authentication (verifying identity), authorization (controlling what each user can do), and accounting (logging all activity for audit trails). A firewall (D) would restrict the free flow of data, violating the stated communication requirement. NIPS (B) detects attacks but doesn't enforce access control. SCADA security (A) is a broad category and not as precise an answer as AAA for this specific access-control problem.
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