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Question 299 - SOA-C02 discussion

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A company has a secure website running on Amazon EC2 instances behind an Application Load Balancer (ALB). An SSL certificate from AWS Certificate Manager (ACM) is used on the ALB. Users with legacy web browsers are experiencing issues with the website.

How should the SysOps administrator resolve these issues in the MOST operationally efficient manner?

A.
Create a new SSL certificate in ACM and install the new certificate on the ALB to support legacy web browsers.
Answers
A.
Create a new SSL certificate in ACM and install the new certificate on the ALB to support legacy web browsers.
B.
Create a second ALB and install a custom SSL certificate with a different domain name on the second ALB to support legacy web browsers.
Answers
B.
Create a second ALB and install a custom SSL certificate with a different domain name on the second ALB to support legacy web browsers.
C.
Remove the ALB from the configuration and install a custom SSL certificate on each web server.
Answers
C.
Remove the ALB from the configuration and install a custom SSL certificate on each web server.
D.
Update the SSL negotiation configuration of the ALB with a security policy that contains ciphers for legacy web browsers.
Answers
D.
Update the SSL negotiation configuration of the ALB with a security policy that contains ciphers for legacy web browsers.
Suggested answer: D

Explanation:

The issues experienced by users with legacy browsers typically stem from the SSL/TLS ciphers that are supported or enforced by the ALB. Modern security policies may exclude older ciphers that are necessary for compatibility with older browsers. Here's how to resolve it:

Access the ALB Settings: Go to the AWS Management Console, navigate to the ALB settings, and locate the SSL negotiation configurations.

Modify Security Policy: Update the SSL/TLS security policy on the ALB to include ciphers that are compatible with legacy browsers. AWS provides predefined security policies, and some of these policies are designed to support older ciphers while still maintaining a level of security that complies with general best practices.

Apply Changes: Once the security policy is updated, the ALB will start using this new configuration, which should resolve compatibility issues with legacy browsers without needing to replace the SSL certificate or alter the infrastructure.

This solution maintains the operational efficiency of the setup and avoids the need for additional resources like a second ALB or new certificates.

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asked 16/09/2024
Paul Beugelsdijk
40 questions
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