AWS - Security Groups and Network ACLs
Which of the following best describes the default inbound rule of an AWS default security group?
Which of the following best describes the default inbound rule of an AWS default security group?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall default inbound rules for security groups
The default security group allows inbound traffic only from instances associated with the same security group.Step 2: Match options with this behavior
Inbound traffic is allowed only from instances assigned to the same security group. correctly states this behavior, while others are incorrect or too broad.Final Answer:
Inbound traffic is allowed only from instances assigned to the same security group. -> Option AQuick Check:
Default inbound rule = Allow from same group [OK]
Quick Trick: Default inbound allows traffic only from same security group [OK]
Common Mistakes:
MISTAKES- Assuming inbound is open to all IPs by default
- Thinking inbound is denied completely by default
- Confusing inbound rules with outbound rules
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