How can you allow an EC2 instance to send outbound traffic only to another instance in the same security group?

hard📝 Application Q9 of 15

AWS - Security Groups and Network ACLs

ASet inbound rule with source as the security group ID

BSet outbound rule with destination as the security group ID

CSet inbound rule with source as 0.0.0.0/0

DSet outbound rule with destination as 0.0.0.0/0

Step-by-Step Solution

Solution:

Step 1: Understand security group referencing
Security groups can reference themselves to allow traffic within the group.
Step 2: Configure outbound rule
Setting outbound rule destination as the security group ID restricts traffic to instances in that group.
Final Answer:
Set outbound rule with destination as the security group ID -> Option B
Quick Check:
Use security group ID in outbound rules to restrict traffic [OK]

Quick Trick: Use security group ID as destination to restrict outbound [OK]

Common Mistakes:

MISTAKES

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