AWS - Security Groups and Network ACLs
If an AWS security group allows inbound traffic on port 443, what must you do to allow the response traffic back to the client?
If an AWS security group allows inbound traffic on port 443, what must you do to allow the response traffic back to the client?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall stateful nature of security groups
Security groups automatically allow return traffic for allowed inbound connections.Step 2: Apply to port 443 inbound rule
Since inbound on 443 is allowed, response outbound traffic is automatically allowed without extra rules.Final Answer:
No action needed; response traffic is allowed automatically -> Option AQuick Check:
Inbound allowed = return traffic auto-allowed [OK]
Quick Trick: Inbound allowed means return traffic auto-allowed [OK]
Common Mistakes:
- Adding unnecessary outbound rules
- Confusing inbound and outbound rule requirements
- Thinking ephemeral ports must be opened manually
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