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Question 202 - SCS-C01 discussion

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An organization operates a web application that serves users globally. The application runs on Amazon EC2 instances behind an Application Load Balancer. There is an Amazon CloudFront distribution in front of the load balancer, and the organization uses AWS WAF. The application is currently experiencing a volumetric attack whereby the attacker is exploiting a bug in a popular mobile game. The application is being flooded with HTTP requests from all over the world with the User-Agent setto the following string: Mozilla/5.0 (compatible; ExampleCorp; ExampleGame/1.22; Mobile/1.0)What mitigation can be applied to block attacks resulting from this bug while continuing to servicelegitimate requests?

A.
Create a rule in AWS WAF rules with conditions that block requests based on the presence of ExampleGame/1.22 in the User-Agent header
Answers
A.
Create a rule in AWS WAF rules with conditions that block requests based on the presence of ExampleGame/1.22 in the User-Agent header
B.
Create a geographic restriction on the CloudFront distribution to prevent access to the application from most geographic regions
Answers
B.
Create a geographic restriction on the CloudFront distribution to prevent access to the application from most geographic regions
C.
Create a rate-based rule in AWS WAF to limit the total number of requests that the web application services.
Answers
C.
Create a rate-based rule in AWS WAF to limit the total number of requests that the web application services.
D.
Create an IP-based blacklist in AWS WAF to block the IP addresses that are originating from requests that contain ExampleGame/1.22 in the User-Agent header.
Answers
D.
Create an IP-based blacklist in AWS WAF to block the IP addresses that are originating from requests that contain ExampleGame/1.22 in the User-Agent header.
Suggested answer: A

Explanation:

Since all the attack has http header- User-Agent set to string: Mozilla/5.0 (compatible; ExampleCorp;)it would be much more easier to block these attack by simply denying traffic with the header match . HTH ExampleGame/1.22; Mobile/1.0)

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asked 16/09/2024
Liam Derwin
41 questions
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