Add AWS environments with AWS Organizations

You can use our assistant to add AWS environments if you use AWS Organizations.


When adding AWS environments with AWS Organizations the assistant prompts you to make choices and provide information. The assistant fills in the parameters needed to create the stack in AWS.

You can find background information about the tasks you may need to complete, and the parameters that are used, in this document.

Collect information from your Sophos Cloud Optix console

The information is used to link the StackSet to your Sophos Cloud Optix accounts.

Before creating AWS CloudFormation StackSets you must collect information from your Sophos Cloud Optix account. This is used later in the AWS Create StackSet assistant.

  1. Sign in to your Sophos Cloud Optix account.
  2. Go to Settings and click Environments > Add New Environment.
  3. On the Add your cloud environment page, note the details under Add multiple AWS accounts using CloudFormation StackSets.

    You must take note of the following parameters:

    • DnsPrefixCloudTrail
    • ExternalId
    • ReqID
    • CustomerId
    • DnsPrefixFlow
  4. Go to the AWS console to create your CloudFormation StackSets.

Configure CloudFormation StackSet in the master AWS account

To create the AWS CloudFormation StackSet do as follows:

  1. Sign into the AWS console with your AWS master account.
  2. Select the CloudFormation service.
  3. Select StackSets.
  4. Select Create StackSet.
  5. On the Choose a template page select Template is ready.

    Here's an image showing template selection.

    Screenshot showing template selection
  6. Select Amazon S3 URL as the template source.
  7. Enter the template URL:

    Here's an image showing the correct URL.

    Screenshot showing template source field with correct URL
  8. Click Next.

Create CloudFormation StackSet for AWS Organizations

Use Sophos Cloud Optix information in the Create StackSet assistant.

Use the parameters you obtained earlier from your Sophos Cloud Optix account to fill in the fields in the AWS CloudFormation StackSet assistant. This links your StackSets to Sophos Cloud Optix.

Warning Don't delete or amend any fields that are pre-populated by Sophos Cloud Optix or on-boarding fails.

Ensure you are signed into your chosen AWS master account and do as follows:

  1. Enter OptixStackSet into StackSet name on the Specify StackSet details page.Change the description if necessary.
  2. Enter the following parameters from Sophos Cloud Optix:
    • DnsPrefixCloudTrail
    • ExternalId
    • ReqID
    • CustomerId
    • DnsPrefixFlow
    1. Don't change the SophosOptixAccountId field.
  3. The pre-populated list in the RegionList must only be changed if some of your regions don't have a default Amazon Virtual Private Cloud (VPC). You must remove those regions from the RegionList field or the on-boarding process fails.
  4. Set the isOrganizationTrail parameter to true.
  5. Don't change any other fields.

    Here is an example of the Parameters menu with correct data.

    Screenshot of Parameters menu, showing correct data in fields
  6. Click Next.
    The Configure StackSet options page appears. You don't need to change anything.
  7. Click Next.
  8. On the Set deployment options page, select Deploy to Organization.

    Screenshot of Set deployment options menu, showing correct options selected
  9. In Specify regions, choose one region.

    The CloudFormation stack instance is created in this region for the target member account.

  10. Click Next.
  11. A Review page appears, which shows you all the options you have entered. Check this carefully.
  12. Turn on I acknowledge that AWS CloudFormation might create IAM resources with custom names.
  13. Close the assistant.
    This creates the stack instance and adds the target member accounts to Sophos Cloud Optix.

Adding EKS clusters

Note After adding your AWS account to Sophos Cloud Optix, you can add Amazon Elastic Kubernetes Service (EKS) clusters. You must add these clusters to Sophos Cloud Optix separately, using the Amazon CLI script provided by Sophos. See Add your Amazon EKS clusters.