Ensure recommended SSL/TLS protocol version is used for AWS Elastic Load Balancers (ELB)

Using the latest version of TLS can help keep data in-transit protected from man-in-the-middle and similar attacks.

In AWS Console -

1. Sign in to the AWS Console and open the Load Balancer Console.
2. Choose the load balancer to edit and in the Actions drop down select Edit Listener.
3. Under Secure listener settings, set the Security policy to ELBSecurityPolicy-TLS-1-2-Ext-2018-06 or newer.
4. Select Save changes.

In Terraform -

1. In the aws_load_balancer_policy resource, create a policy_attribute block.
2. Set the policy_attribute name to Protocol-TLSv1.2 and the value to true.

References:
https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/data-protection.html
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/create-https-listener.html#describe-ssl-policies
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/load_balancer_policy