When configuring a Network ACL to allow web traffic (port 80) to a subnet, what else must be configured for the connection to work correctly?

Direct Answer (Verified)Reviewed by Sunny (Senior Cloud Engineer)

Correct Answer: An outbound rule for ephemeral ports (e.g., 1024-65535) back to the client

NACLs are stateless. You must explicitly allow the 'returning' traffic from the server to the client's temporary (ephemeral) port range....

📋Part of AWS Certified Solutions Architect – Associate (SAA-C03) · AWS Certification Practice
Real Exam ScenarioNetwork ACLs

When configuring a Network ACL to allow web traffic (port 80) to a subnet, what else must be configured for the connection to work correctly?

✓ Correct Answer & ExplanationNetwork ACLs

Correct Answer

An outbound rule for ephemeral ports (e.g., 1024-65535) back to the client

Why This Answer Is Correct

NACLs are stateless. You must explicitly allow the 'returning' traffic from the server to the client's temporary (ephemeral) port range.

📚 What This Question Tests

This question evaluates your knowledge of Network ACLs — a core concept tested in AWS Certified Solutions Architect – Associate (SAA-C03). Understanding Network ACLs is essential for designing scalable, secure, and cost-effective cloud architectures. Mastery of this topic will help you answer scenario-based questions confidently on exam day.