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Question 233 - SCS-C01 discussion

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A company has enabled Amazon GuardDuty in all Regions as part of its security monitoring strategy.

In one of the VPCs, the company hosts an Amazon EC2 instance working as an FTP server that is contacted by a high number of clients from multiple locations. This is identified by GuardDuty as a brute force attack due to the high number of connections that happen every hour.

The finding has been flagged as a false positive. However, GuardDuty keeps raising the issue. A Security Engineer has been asked to improve the signal-to-noise ratio. The Engineer needs to ensure that changes do not compromise the visibility of potential anomalous behavior.

How can the Security Engineer address the issue?

A.
Disable the FTP rule in GuardDuty in the Region where the FTP server is deployed
Answers
A.
Disable the FTP rule in GuardDuty in the Region where the FTP server is deployed
B.
Add the FTP server to a trusted IP list and deploy it to GuardDuty to stop receiving the notifications
Answers
B.
Add the FTP server to a trusted IP list and deploy it to GuardDuty to stop receiving the notifications
C.
Use GuardDuty filters with auto archiving enabled to close the findings
Answers
C.
Use GuardDuty filters with auto archiving enabled to close the findings
D.
Create an AWS Lambda function that closes the finding whenever a new occurrence is reported
Answers
D.
Create an AWS Lambda function that closes the finding whenever a new occurrence is reported
Suggested answer: B

Explanation:

Trusted IP lists consist of IP addresses that you have whitelisted for secure communication with your AWS infrastructure and applications. GuardDuty does not generate findings for IP addresses on trusted IP lists. At any given time, you can have only one uploaded trusted IP list per AWS account per region.

References:

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asked 16/09/2024
Nisanka Mandara
30 questions
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