AWS - Security Groups and Network ACLs
Which of the following is the correct syntax to allow inbound TCP traffic on port 22 in a NACL rule?
Which of the following is the correct syntax to allow inbound TCP traffic on port 22 in a NACL rule?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify correct protocol and port
SSH uses TCP on port 22, so protocol must be TCP and port 22.Step 2: Confirm rule direction and action
Inbound traffic must be allowed, so action is ALLOW and direction is Inbound.Final Answer:
RuleNumber: 100, Protocol: TCP, PortRange: 22, Action: ALLOW, Direction: Inbound -> Option BQuick Check:
Allow inbound TCP port 22 = RuleNumber: 100, Protocol: TCP, PortRange: 22, Action: ALLOW, Direction: Inbound [OK]
Quick Trick: SSH needs TCP port 22 inbound ALLOW rule [OK]
Common Mistakes:
MISTAKES- Using UDP instead of TCP
- Setting wrong port number
- Denying instead of allowing inbound traffic
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