AWSConfigRemediation-DisableSubnetAutoAssignPublicIP - Amazon Systems Manager Automation runbook reference
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The AWSConfigRemediation-DisableSubnetAutoAssignPublicIP runbook disables the IPv4 public addressing attribute for the subnet you specify.

Run this Automation (console)

Document type





Linux, macOS, Windows


  • AutomationAssumeRole

    Type: String

    Allowed values: ^arn:(?:aws|aws-us-gov|aws-cn):iam::\d{12}:role\/[\w+=,.@/-]+$

    Description: (Required) The Amazon Resource Name (ARN) of the Amazon Identity and Access Management (IAM) role that allows Systems Manager Automation to perform the actions on your behalf.

  • SubnetId

    Type: String

    Description: (Required) The ID of the subnet that you want to disable the auto-assign public IPv4 address attribute on.

Required IAM permissions

The AutomationAssumeRole parameter requires the following actions to successfully use the runbook.

  • ssm:StartAutomationExecution

  • ssm:GetAutomationExecution

  • ec2:DescribeSubnets

  • ec2:ModifySubnetAttribute

Document Steps

  • aws:executeAwsApi - Disables the auto-assign public IPv4 address attribute for the subnet you specified in the SubnetId parameter.

  • aws:assertAwsResourceProperty - Verifies the attribute has been disabled.