Actions, resources, and condition keys for Amazon Session Manager Message Gateway Service - Service Authorization Reference

Actions, resources, and condition keys for Amazon Session Manager Message Gateway Service

Amazon Session Manager Message Gateway Service (service prefix: ssmmessages) provides the following service-specific resources, actions, and condition context keys for use in IAM permission policies.

References:

Actions defined by Amazon Session Manager Message Gateway Service

You can specify the following actions in the Action element of an IAM policy statement. Use policies to grant permissions to perform an operation in AWS. When you use an action in a policy, you usually allow or deny access to the API operation or CLI command with the same name. However, in some cases, a single action controls access to more than one operation. Alternatively, some operations require several different actions.

The Resource types column indicates whether each action supports resource-level permissions. If there is no value for this column, you must specify all resources ("*") in the Resource element of your policy statement. If the column includes a resource type, then you can specify an ARN of that type in a statement with that action. Required resources are indicated in the table with an asterisk (*). If you specify a resource-level permission ARN in a statement using this action, then it must be of this type. Some actions support multiple resource types. If the resource type is optional (not indicated as required), then you can choose to use one but not the other.

For details about the columns in the following table, see Actions table.

Actions Description Access level Resource types (*required) Condition keys Dependent actions
CreateControlChannel Grants permission to register a control channel for an instance to send control messages to Systems Manager service Write

ssm:SourceInstanceARN

CreateDataChannel Grants permission to register a data channel for an instance to send data messages to Systems Manager service Write
OpenControlChannel Grants permission to open a websocket connection for a registered control channel stream from an instance to Systems Manager service Write
OpenDataChannel Grants permission to open a websocket connection for a registered data channel stream from an instance to Systems Manager service Write

Resource types defined by Amazon Session Manager Message Gateway Service

Amazon Session Manager Message Gateway Service does not support specifying a resource ARN in the Resource element of an IAM policy statement. To allow access to Amazon Session Manager Message Gateway Service, specify “Resource”: “*” in your policy.

Condition keys for Amazon Session Manager Message Gateway Service

Amazon Session Manager Message Gateway Service defines the following condition keys that can be used in the Condition element of an IAM policy. You can use these keys to further refine the conditions under which the policy statement applies. For details about the columns in the following table, see Condition keys table.

To view the global condition keys that are available to all services, see Available global condition keys.

Condition keys Description Type
ssm:SourceInstanceARN Filters access by verifying the Amazon Resource Name (ARN) of the AWS Systems Manager's managed instance from which the request is made. This key is not present when the request comes from the managed instance authenticated with an IAM role associated with EC2 instance profile String