In Citrix ADC, how are Global Access Control Lists (ACLs) evaluated regarding traffic flow?

Question

Options

• AFrom bottom to top
• BFrom top to bottom
• CIn random order
• DBased on the server's response time

• B
  95% (21)
• C
  5% (1)

Explanation

Global ACLs in Citrix ADC are processed sequentially from top to bottom (B), meaning the first matching rule in the list is applied and subsequent rules are not evaluated - this is the standard ordered-list policy model used across most network security systems. Option A (bottom to top) inverts this logic and would produce counterintuitive, unpredictable results for administrators building rule sets. Option C (random order) would make ACLs completely unreliable for security policy enforcement, which no production system does. Option D (server response time) conflates traffic filtering with load balancing - ACLs act on inbound packets before any backend server is even involved.

Memory tip: Think of ACLs like a checklist read top-to-bottom - the first rule that matches "wins" and the rest are skipped. This is why more specific rules must always be placed above broader ones.

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