AWS - Security Groups and Network ACLs
Why is it important to restrict security group inbound rules to specific IP ranges rather than allowing 0.0.0.0/0?
Why is it important to restrict security group inbound rules to specific IP ranges rather than allowing 0.0.0.0/0?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand security risks of open inbound rules
Allowing 0.0.0.0/0 means anyone on the internet can attempt to connect.Step 2: Benefits of restricting IP ranges
Limiting inbound to known IPs reduces attack surface and unauthorized access risk.Final Answer:
To reduce exposure to unauthorized access and improve security -> Option DQuick Check:
Restrict IPs to improve security = To reduce exposure to unauthorized access and improve security [OK]
Quick Trick: Limit inbound IPs to trusted sources only [OK]
Common Mistakes:
- Believing AWS blocks 0.0.0.0/0 automatically
- Thinking it improves routing speed
- Confusing IPv4 and IPv6 CIDR blocks
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