Data encryption at rest
One of the most important parts of any architecture is data protection and encryption, when used correctly, can provide an additional layer of protection. Following recommendations from security pillar of Well Architected Framework, we have to encrypt storage types by way of rendering it unintelligible to unauthorized access
For this, AWS KMS helps you to manage encryption keys and integrates with many AWS services, like S3 or EBS. For this cases, you can apply server-side encryption in two ways
By console:
Go to EC2 console -» EBS Encryption
And go to Manage
On S3, select the bucket and go to Properties
Select Edit to modify encryption configuration and enable Server-Side Encryption
At this point, you can choose to use an AWS managed key or create another KMS key. Also you can enable bucket key to reduce calls to KMS as well as to reduce KMS costs
If you want to apply it with IaC (with terraform in this case):
resource "aws_s3_bucket" "MyBucket" {
bucket = "my-bucket-name"
server_side_encryption_configuration {
rule {
apply_server_side_encryption_by_default {
sse_algorithm = "aws:kms"
kms_master_key_id = aws_kms_key.MyKMSKey.arn
}
}
}
}
resource "aws_ebs_encryption_by_default" "MyVolume" {
enabled = true
} If you find it interesting and want to go deeper into the subject, you can read Ken Beer (General Manager AWS KMS) about the importance of encryption in this blog
Ezequiel Domenech DevOps Engineer Teracloud
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