You created a Network ACL rule to allow inbound HTTP traffic on port 80 but traffic is still blocked. What is the likely error?

medium📝 Debug Q6 of 15

AWS - Security Groups and Network ACLs

AThe rule number is higher than a deny rule that blocks the traffic.

BThe rule uses '--egress' instead of '--ingress'.

CThe CIDR block is set to a private IP range.

DThe Network ACL is attached to the wrong subnet.

Step-by-Step Solution

Solution:

Step 1: Check rule direction
Inbound traffic requires '--ingress' flag; using '--egress' applies to outbound.
Step 2: Understand impact of wrong direction
If rule is set for outbound but intended for inbound, traffic will be blocked inbound.
Final Answer:
The rule uses '--egress' instead of '--ingress'. -> Option B
Quick Check:
Inbound rules need '--ingress' flag [OK]

Quick Trick: Use '--ingress' for inbound rules, '--egress' for outbound [OK]

Common Mistakes:

MISTAKES

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