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Exam AWS Certified Security - Specialty SCS-C02 All Questions

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Exam AWS Certified Security - Specialty SCS-C02 topic 1 question 30 discussion

Exam question from Amazon's AWS Certified Security - Specialty SCS-C02
Question #: 30
Topic #: 1
[All AWS Certified Security - Specialty SCS-C02 Questions]

A company is hosting a web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The application has become the target of a DoS attack. Application logging shows that requests are coming from a small number of client IP addresses, but the addresses change regularly.
The company needs to block the malicious traffic with a solution that requires the least amount of ongoing effort.
Which solution meets these requirements?

  • A. Create an AWS WAF rate-based rule, and attach it to the ALB.
  • B. Update the security group that is attached to the ALB to block the attacking IP addresses.
  • C. Update the ALB subnet's network ACL to block the attacking client IP addresses.
  • D. Create an AWS WAF rate-based rule, and attach it to the security group of the EC2 instances.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by 100fold at Oct. 19, 2023, 5:37 p.m.
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Daniel76
Highly Voted 1 year, 3 months ago
Selected Answer: A
AWS WAF can be deployed on Amazon CloudFront, the Application Load Balancer (ALB), Amazon API Gateway, and AWS AppSync.
upvoted 5 times
smanzana
1 year, 1 month ago
Indeed, AWS WAF cannot be directly attached to the Security Group of EC2 instances.
upvoted 1 times
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FunkyFresco
Most Recent 6 months, 2 weeks ago
Selected Answer: A
A without any doubt.
upvoted 1 times
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navid1365
9 months, 4 weeks ago
Selected Answer: A
Attach a WAF to the ALB
upvoted 1 times
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Sodev
11 months ago
What's that mean "a small number of client IP addresses, but the addresses change regularly.": v if small number, why not use C =)) i thing this question not exactlty, "small" is redundant words ?
upvoted 2 times
khuman_12
9 months, 2 weeks ago
Exactly, the question is incorrect. And answer A: in other words "just create rate-limit and all DDoS will take up all the limit and the service will down"
upvoted 1 times
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Raphaello
1 year, 2 months ago
Selected Answer: A
A WAF rate-based rule and attach it to ALB.
upvoted 1 times
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Aamee
1 year, 3 months ago
Selected Answer: A
WAF protects CloudFront, R53 and ALB as they're tightly integrated with WAF.
upvoted 1 times
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awssecuritynewbie
1 year, 3 months ago
They could of used the VPC flow logs to figure out the IPs that are attacking then use lambda to update the ACL NACL for the LB. it would be better than actually applying rate limiting.
upvoted 1 times
Josh1217
11 months, 2 weeks ago
The IPs keep on changing.
upvoted 1 times
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100fold
1 year, 4 months ago
Selected Answer: A
Answer A https://www.examtopics.com/discussions/amazon/view/61173-exam-aws-certified-security-specialty-topic-1-question-259/
upvoted 4 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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