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Question 399 - SOA-C02 discussion

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A company has an AWS Config rule that identifies open SSH ports in security groups. The rule has an automatic remediation action to delete the SSH inbound rule for noncompliant security groups. However, business units require SSH access and can provide a list of trusted IPs to restrict access.

A.

Create a new AWS Systems Manager Automation runbook that adds an IP set to the security group's inbound rule. Update the AWS Config rule to change the automatic remediation action to use the new runbook.

Answers
A.

Create a new AWS Systems Manager Automation runbook that adds an IP set to the security group's inbound rule. Update the AWS Config rule to change the automatic remediation action to use the new runbook.

B.

Create a new AWS Systems Manager Automation runbook that updates the security group's inbound rule with the IP addresses from the business units. Update the AWS Config rule to change the automatic remediation action to use the new runbook.

Answers
B.

Create a new AWS Systems Manager Automation runbook that updates the security group's inbound rule with the IP addresses from the business units. Update the AWS Config rule to change the automatic remediation action to use the new runbook.

C.

Create an AWS Lambda function that adds an IP set to the security group's inbound rule. Update the AWS Config rule to change the automatic remediation action to use the Lambda function.

Answers
C.

Create an AWS Lambda function that adds an IP set to the security group's inbound rule. Update the AWS Config rule to change the automatic remediation action to use the Lambda function.

D.

Create an AWS Lambda function that updates the security group's inbound rule with the IP addresses from the business units. Update the AWS Config rule to change the automatic remediation action to use the Lambda function.

Answers
D.

Create an AWS Lambda function that updates the security group's inbound rule with the IP addresses from the business units. Update the AWS Config rule to change the automatic remediation action to use the Lambda function.

Suggested answer: B

Explanation:

The problem requires modifying the inbound SSH rule to restrict access to a list of trusted IPs instead of deleting it entirely. AWS Config rules can be configured with automatic remediation actions using either Systems Manager Automation runbooks or Lambda functions. However, AWS Systems Manager Automation runbooks are often more appropriate for managing infrastructure changes like security group modifications because they are reusable, parameterized, and easier to audit.

Create a Systems Manager Automation runbook: This runbook will contain steps to add or modify the existing security group rule, allowing SSH access only from the specified IP addresses.

Update the AWS Config rule: Modify the Config rule to call this new runbook for its automatic remediation. This will prevent deletion of the SSH rule and instead update it based on the IP list.

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asked 06/11/2024
SULIMAN ALGHURAIR
35 questions
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