Description:
This policy ensures that all classic load balancers are protected by AWS Shield Advanced. This helps to protect your classic load balancers from DDoS attacks.

Rationale:
AWS Shield Advanced provides advanced monitoring and protection against DDoS attacks. By protecting your classic load balancers with Shield Advanced, you can help to ensure that your applications are available even during a DDoS attack.

Impact:
If you do not protect your classic load balancers with Shield Advanced, your applications may be unavailable during a DDoS attack. This could lead to customer dissatisfaction and loss of revenue.

Default Value:
AWS will not protect classic load balancers by default. You must explicitly enable Shield Advanced protection for each classic load balancer.

Pre-requisites:

  • You must have an AWS account and be an IAM user with the appropriate permissions to enable Shield Advanced.
  • You must know the names or IDs of the classic load balancers that you want to protect.


Remediation Steps:

  1. Enable Shield Advanced protection for each classic load balancer.
  2. Verify that the classic load balancers are protected by checking the AWS Shield Advanced console or the AWS CLI.

Test Plan:

  1. Identify a subset of classic load balancers that are not currently protected by Shield Advanced.
  2. Enable Shield Advanced protection for the selected classic load balancers.
  3. Verify that the classic load balancers are protected by checking the AWS Shield Advanced console or the AWS CLI.

Implementation Plan:

AWS CLI:

aws shield enable-protection --resource-type classic-load-balancer --resource-id <clb-id>


AWS GUI:

  1. Go to the AWS Shield Advanced console.
  2. Click Protect resources.
  3. Select Classic load balancers.
  4. Enter the name or ID of the classic load balancer that you want to protect.
  5. Click Protect.

Backout Plan:

  1. Disable Shield Advanced protection for each classic load balancer.
  2. Verify that the classic load balancers are no longer protected by checking the AWS Shield Advanced console or the AWS CLI.


Note:

  • This policy applies to all regions and accounts.
  • You can use the AWS Shield Advanced API to automate the process of enabling and disabling protection for classic load balancers.


Reference:

https://docs.aws.amazon.com/shield/

https://docs.aws.amazon.com/cli/latest/reference/shield/index.html