Cloud Bastion Host (CBH)

The Organizations provides Service Control Policies (SCPs) to set access control policies.

SCPs do not actually grant any permissions to a principal. They only set the permissions boundary for the principal. When SCPs are attached to a member account or an organizational unit (OU), they do not directly grant permissions to that member account or OU. Instead, the SCPs just determine what permissions are available for that member account or the member accounts under that OU.

This section describes the elements used by IAM custom identity policies and Organizations SCPs. The elements include actions, resources, and conditions.

For details about how to use these elements to create a custom SCP, see Creating an SCP.

Actions

Actions are specific operations that are allowed or denied in an SCP.

The Access Level column describes how the action is classified (List, Read, or Write). This classification helps you understand the level of access that an action grants when you use it in an SCP policy.
The Resource Type column indicates whether the action supports resource-level permissions.
- You can use a wildcard (*) to indicate all resource types. If this column is empty (-), the action does not support resource-level permissions, and you must specify all resources ("*") in your SCP statements.
- If this column includes a resource type, you must specify the URN in the Resource element of your statements.
- Required resources are marked with asterisks (*) in the table. If you specify a resource in a statement using this action, then it must be of this type.
For details about the resource types defined by CBH, see Resources.
The Condition Key column includes keys that you can specify in the Condition element of an SCP policy statement.
- If the Resource Type column has values for an action, the condition key takes effect only for the listed resource types.
- If the Resource Type column is empty (-) for an action, the condition key takes effect for all resources that action supports.
- If the Condition Key column is empty (-) for an action, the action does not support any condition keys.
For details about the condition keys defined by CBH, see Conditions.

The following table lists the actions that you can define in SCP statements for CBH.

**Table 1** Actions supported by CBH
Action	Description	Access Level	Resource Type (*: Required)	Condition Key	Alias
cbh::listAvailableZones	Grants the permission to query service AZs.	List	-	-	-
cbh::getEcsQuota	Grants the permission to obtain the ECS quota.	Read	-	-	-
cbh::getQuota	Grants the permission to query the CBH instance quotas.	Read	-	-	-
cbh::listSpecifications	Queries protection specifications.	List	-	-	-
cbh:instance:listInstances	Grants the permission to list instances.	List	instance *	-	-
cbh:instance:getInstanceStatus	Grants the permission to query the CBH status.	Read	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:startInstance	Grants the permission to start a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:stopInstance	Grants the permission to disable a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:rebootInstance	Grants the permission to restart a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:upgradeInstance	Grants the permission to upgrade a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:loginInstance	Grants the permission to log in to a CBH instance as an IAM user.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:resetInstancePassword	Grants the permission to reset a password for logging in to a CBH.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:resetInstanceLoginMethod	Grants the permission to reset the CBH instance login mode.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:deleteInstance	Grants the permission to delete a faulty CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:alterInstance	Grants the permission to change a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:createInstance	Grants the permission to create a CBH instance.	Write	instance *	g:EnterpriseProjectId g:RequestTag/tag-key g:TagKeys cbh:VpcId cbh:SubnetId cbh:AllowBindPublicIp	-
cbh:instance:bindInstanceEip	Grants the permission to bind an EIP to a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:unbindInstanceEip	Grants the permission to unbind an EIP from a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:updateInstanceSecurityGroup	Grants the permission to update the security group of a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh::operateAuthorization	Grants the permission to create or cancel the agency authorization for the CBH service.	Write	-	-	-
cbh::getAuthorization	Grants the permission to obtain the authorization information of the CBH service from the tenant.	Read	-	-	-
cbh::listTags	Grants the permission to query all tags.	List	-	-	-
cbh:instance:getInstanceTags	Grants the permission to query tags of CBH instances.	Read	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key	-
cbh:instance:countInstancesByTag	Grants the permission to count the number of instances that meet the tag conditions.	List	instance *	-	-
cbh:instance:listInstancesByTag	Grants the permission to search for instances by tag.	List	-	-	-
cbh:instance:operateInstanceTags	Grants the permission to operate the resource tags of the CBH instance.	Tagging	instance *	g:EnterpriseProjectId g:ResourceTag/tag-key g:RequestTag/tag-key g:TagKeys	-
cbh:instance:getOmUrl	Grants the permission to obtain the URLs for O&M of assets managed in CBH.	Read	instance *	g:EnterpriseProjectId g:ResourceTag/<tag-key>	cbh:instance:getOmUrl
cbh:instance:rollbackInstance	Grants the permission to roll back a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/<tag-key>	cbh:instance:upgrade
cbh:instance:migrateInstanceTraffic	Grants the permission to migrate traffic of a CBH instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/<tag-key>	cbh:instance:upgrade
cbh:instance:switchInstanceVpc	Grants the permission to switch the VPC of the bastion host instance.	Write	instance *	g:EnterpriseProjectId g:ResourceTag/<tag-key> cbh:VpcId cbh:SubnetId	-

Each API of CBH usually supports one or more actions. Table 2 lists the supported actions and dependencies.

**Table 2** Actions and dependencies supported by CBH APIs
API	Action	Dependencies
GET /v2/{project_id}/cbs/available-zone	cbh::listAvailableZones	-
	cbh::getEcsQuota	ecs:cloudServerFlavors:get
	cbh::getQuota	-
GET /v2/{project_id}/cbs/instance/specification	cbh::listSpecifications	-
GET /v2/{project_id}/cbs/instance/list	cbh:instance:listInstances	eps:enterpriseProjects:list
GET /v2/{project_id}/cbs/instance/list	cbh:instance:getInstanceStatus	-
POST /v2/{project_id}/cbs/instance/start	cbh:instance:startInstance	-
POST /v2/{project_id}/cbs/instance/stop	cbh:instance:stopInstance	-
POST /v2/{project_id}/cbs/instance/stop	cbh:instance:rebootInstance	-
POST /v2/{project_id}/cbs/instance/upgrade	cbh:instance:upgradeInstance	-
POST /v2/{project_id}/cbs/instance/login	cbh:instance:loginInstance	-
PUT /v2/{project_id}/cbs/instance/password	cbh:instance:resetInstancePassword	-
PUT /v2/{project_id}/cbs/instance/login-method	cbh:instance:resetInstanceLoginMethod	-
DELETE /v2/{project_id}/cbs/instance	cbh:instance:deleteInstance	-
DELETE /v2/{project_id}/cbs/instance	cbh:instance:alterInstance	evs:quotas:get
POST /v2/{project_id}/cbs/instance	cbh:instance:createInstance	vpc:quotas:list vpc:subnets:list vpc:subnets:get vpc:securityGroups:list ecs:cloudServerFlavors:get
	cbh:instance:bindInstanceEip	-
	cbh:instance:unbindInstanceEip	-
PUT /v2/{project_id}/cbs/instance/{server_id}/security-groups	cbh:instance:updateInstanceSecurityGroup	vpc:ports:update
	cbh::operateAuthorization	-
GET /v2/{project_id}/cbs/agency/authorization	cbh::getAuthorization	-
GET /v2/{project_id}/cbs/instance/tags	cbh::listTags	-
GET /v2/{project_id}/cbs/instance/{resource_id}/tags	cbh:instance:getInstanceTags	-
POST /v2/{project_id}/cbs/instance/count	cbh:instance:countInstancesByTag	-
POST /v2/{project_id}/cbs/instance/filter	cbh:instance:listInstancesByTag	-
POST /v2/{project_id}/cbs/instance/filter	cbh:instance:operateInstanceTags	-
POST /v2/{project_id}/cbs/instance/{server_id}/eip/bind	cbh:instance:bindInstanceEip	eip:publicIps:list eip:publicIps:update
POST /v2/{project_id}/cbs/instance/{server_id}/eip/unbind	cbh:instance:unbindInstanceEip	eip:publicIps:update eip:publicIps:list
GET /v2/{project_id}/cbs/instance/ecs-quota	cbh::getEcsQuota	ecs:cloudServerFlavors:get
GET /v2/{project_id}/cbs/instance/quota	cbh::getQuota	-
GET /v2/{project_id}/cbs/instance/{server_id}/status	cbh:instance:getInstanceStatus	-
POST /v2/{project_id}/cbs/instance/reboot	cbh:instance:rebootInstance	-
PUT /v2/{project_id}/cbs/instance	cbh:instance:alterInstance	-
POST /v2/{project_id}/cbs/agency/authorization	cbh::operateAuthorization	-
POST /v2/{project_id}/cbs/instance/{resource_id}/tags/action	cbh:instance:operateInstanceTags	-
GET /v2/{project_id}/cbs/instance/get-om-url	cbh:instance:getOmUrl	-
GET /v2/{project_id}/cbs/instance/get-om-url	cbh:instance:migrateInstanceTraffic	-
POST /v2/{project_id}/cbs/instance/rollback	cbh:instance:rollbackInstance	-

Resources

A resource type indicates the resources that an SCP policy applies to. If you specify a resource type for any action in Table 3, the resource URN must be specified in the SCP statements using that action, and the SCP applies only to resources of this type. If no resource type is specified, the Resource element is marked with an asterisk (*) and the SCP applies to all resources. You can also set condition keys in an SCP to define resource types.

The following table lists the resource types that you can define in SCP statements for CBH.

**Table 3** Resource types supported by CBH
Resource Type	URN
instance	cbh:<region>:<account-id>:instance:<instance-id>

Conditions

A Condition element lets you specify conditions for when an SCP is in effect. It contains condition keys and operators.

The condition key that you specify can be a global condition key or a service-specific condition key.
- Global condition keys (with the g: prefix) apply to all actions. Cloud services do not need to provide user identity information. Instead, the system automatically obtains such information and authenticates users. For details, see Global Condition Keys.
- Service-specific condition keys (with the abbreviation of a service name plus a colon as the prefix, for example, cbh:) apply only to operations of EVS. For details, see Table 4.
- The number of values associated with a condition key in the request context of an API call makes the condition key single-valued or multivalued. Single-valued condition keys have at most one value in the request context of an API call. Multivalued condition keys can have multiple values in the request context of an API call. For example, a request can originate from at most one VPC endpoint, so g:SourceVpce is a single-valued condition key. You can tag resources and include multiple tag key-value pairs in a request, so g:TagKeys is a multivalued condition key.
An operator, a condition key, and a condition value constitute a complete condition statement. An SCP takes effect only when the statement meets related requirements. For supported condition operators, see Condition operators.

The following table lists the condition keys that you can define in SCPs for CBH. You can include these condition keys to specify conditions for when your SCP is in effect.

**Table 4** Service-specific condition keys supported by CBH
Service-specific Condition Key	Type	Single-valued/Multivalued	Description
cbh:VpcId	string	Single-valued	Controls access to a bastion host based on its VPC ID.
cbh:SubnetId	string	Single-valued	Controls access to a bastion host based on its subnet ID.
cbh:AllowBindPublicIp	boolean	Single-valued	Grants the permissions to bind an EIP to a bastion host instance.