AWS - Security Groups and Network ACLs
In AWS, what is a key implication of Network ACLs (NACLs) being stateless when managing traffic?
In AWS, what is a key implication of Network ACLs (NACLs) being stateless when managing traffic?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand stateless behavior
Stateless means NACLs do not track connection state or sessions.Step 2: Implication for traffic rules
Because NACLs don't remember previous packets, return traffic must be explicitly allowed by separate rules for inbound and outbound.Final Answer:
Return traffic must be explicitly allowed by rules in both inbound and outbound directions -> Option DQuick Check:
Stateless means no automatic return traffic allowance [OK]
Quick Trick: NACLs require explicit rules for both directions [OK]
Common Mistakes:
- Assuming return traffic is automatically allowed
- Confusing NACLs with stateful security groups
- Believing NACLs track session state
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