Example SCPs for Amazon Elastic Compute Cloud (Amazon EC2)

Require Amazon EC2 instances to use a specific type

With this SCP, any instance launches not using the t2.micro instance type are denied.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "RequireMicroInstanceType",
      "Effect": "Deny",
      "Action": "ec2:RunInstances",
      "Resource": [
        "arn:aws:ec2:*:*:instance/*"
      ],
      "Condition": {
        "StringNotEquals": {
          "ec2:InstanceType": "t2.micro"
        }
      }
    }
  ]
}

Prevent launching EC2 instances without IMDSv2

The following policy restricts all users from launching EC2 instances without IMDSv2.

[
   {
      "Effect":"Deny",
      "Action":"ec2:RunInstances",
      "Resource":"arn:aws:ec2:*:*:instance/*",
      "Condition":{
         "StringNotEquals":{
            "ec2:MetadataHttpTokens":"required"
         }
      }
   },
   {
      "Effect":"Deny",
      "Action":"ec2:RunInstances",
      "Resource":"arn:aws:ec2:*:*:instance/*",
      "Condition":{
         "NumericGreaterThan":{
            "ec2:MetadataHttpPutResponseHopLimit":"3"
         }
      }
   },
   {
      "Effect":"Deny",
      "Action":"*",
      "Resource":"*",
      "Condition":{
         "NumericLessThan":{
            "ec2:RoleDelivery":"2.0"
         }
      }
   },
   {
      "Effect":"Deny",
      "Action":"ec2:ModifyInstanceMetadataOptions",
      "Resource":"*"
   }
]

The following policy restricts all users from launching EC2 instances without IMDSv2 but allows specific IAM identities to modify instance metadata options.

[
  {
    "Effect": "Deny",
    "Action": "ec2:RunInstances",
    "Resource": "arn:aws:ec2:*:*:instance/*",
    "Condition": {
      "StringNotEquals": {
        "ec2:MetadataHttpTokens": "required"
      }
    }
  },
  {
    "Effect": "Deny",
    "Action": "ec2:RunInstances",
    "Resource": "arn:aws:ec2:*:*:instance/*",
    "Condition": {
      "NumericGreaterThan": {
        "ec2:MetadataHttpPutResponseHopLimit": "2"
      }
    }
  },
  {
    "Effect": "Deny",
    "Action": "*",
    "Resource": "*",
    "Condition": {
      "NumericLessThan": {
        "ec2:RoleDelivery": "2.0"
      }
    }
  },
  {
    "Effect": "Deny",
    "Action": "ec2:ModifyInstanceMetadataOptions",
    "Resource": "*",
    "Condition": {
      "ArnNotLike": {
        "aws:PrincipalARN": [
          "arn:aws:iam::{ACCOUNT_ID}:{RESOURCE_TYPE}/{RESOURCE_NAME}"
        ]
      }
    }
  }
]

Prevent disabling of default Amazon EBS encryption

The following policy restricts all users from disabling the default Amazon EBS Encryption.

{
  "Effect": "Deny",
  "Action": [
    "ec2:DisableEbsEncryptionByDefault"
  ],
  "Resource": "*"
}

Prevent creating and attaching non-gp3 volumes

The following policy restricts all users from creating or attaching any Amazon EBS volumes that are not of the gp3 volume type. For more information, see Amazon EBS volume types.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "DenyCreationAndAttachmentOfNonGP3Volumes",
      "Effect": "Deny",
      "Action": [
        "ec2:AttachVolume",
        "ec2:CreateVolume",
        "ec2:RunInstances"
      ],
      "Resource": "arn:aws:ec2:*:*:volume/*",
      "Condition": {
        "StringNotEquals": {
          "ec2:VolumeType": "gp3"
        }
      }
    }
  ]
<<<<<<< HEAD
}

    
=======
}
>>>>>>> mainline

This can help enforce a standardized volume configuration across an organization.