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CMS Hybrid Cloud Phase Two Transition from AWS Permission Boundaries to Service Control Policies








CMS Cloud


CMS Hybrid Cloud Phase Two Transition from AWS Permission Boundaries to Service Control Policies

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Summary

The CMS Hybrid Cloud is announcing the completion of Phase one (1) Service Control Policy updates. Phase two (2) includes the placement of Service Control Policies (SCP's) into non-production Organizational Unit's (OU's) used by non-marketplace Application Development Organizations (ADO's) within the AWS organization service. As part of this implementation there will be a testing phase for ADOs to validate that SCP's do not reduce access to resources.

*Background and Timeline*

Beginning 10/30/2024, the following occurred:


* Hybrid Cloud deployed a service control policy entitled "Protected-actions-v1" to the Non-production OU's and non-marketplace ADOs inside the AWS Organization.
* This SCP is applied to the intended restrictions ONLY for Identity and Access Management (IAM) role's prefixed with 'scp-restricted'.

* ADO teams must validate the new SCP to maintain access by adding the following cloud access role to your AWS account: 'scp-restricted-ado-role'.
* Note - This role is functionally the same as the standard role 'ct-ado-application-admin' but is restricted by a SCP as opposed to a permission boundary.


* After a two (2) week testing period, the Hybrid Cloud Team will replace the protected-actions-v1 SCP with the protected-actions blocking policy.

*Action Required*

Prior to the implementation of the blocking control policy, we are asking ADOs to test the new policy in non-production accounts via Kion and using the role 'scp-restricted-ado-role' to perform their normal day to day operations. If you encounter issues, please open a cloud support ticket in the Jira project [ https://jiraent.cms.gov/secure/Dashboard.jspa ] 'cld-spt' including the issue type of 'access' and the type of request set to 'AWS Console Access'. Support tickets will be reviewed and updated by your Technical Advisor*.*  

*Questions*

For questions or issues about this change, please contact your assigned Hosting Coordinator. You can find more information on Service Control Policies here [ https://cloud.cms.gov/service-control-policies-update ]. 



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