# Identity and access management for Data Transfer Terminal
Identity and access management

 AWS Identity and Access Management (IAM) is an AWS service that helps an administrator securely control access to AWS resources. IAM administrators control who can be *authenticated* (signed in) and *authorized* (have permissions) to use Data Transfer Terminal resources. IAM is an AWS service that you can use with no additional charge.

**Topics**
+ [

## Audience
](#security-iam-audience)
+ [

## Authenticating with identities
](#security-iam-authentication)
+ [

## Managing access using policies
](#security-iam-access-manage)
+ [

# How Data Transfer Terminal works with IAM
](security-iam-service-with-iam.md)

## Audience


How you use AWS Identity and Access Management (IAM) differs, depending on the work that you do in Data Transfer Terminal.

 **Service user** – If you use the Data Transfer Terminal service to do your job, then your administrator provides you with the credentials and permissions that you need. As you use more Data Transfer Terminal features to do your work, you might need additional permissions. Understanding how access is managed can help you request the right permissions from your administrator. If you cannot access a feature in Data Transfer Terminal, see [Troubleshooting AWS Data Transfer Terminal identity and access](security-iam-troubleshoot.md).

 **Service administrator** – If you’re in charge of Data Transfer Terminal resources at your company, you probably have full access to Data Transfer Terminal. It’s your job to determine which Data Transfer Terminal features and resources your service users should access. You must then submit requests to your IAM administrator to change the permissions of your service users. Review the information on this page to understand the basic concepts of IAM. To learn more about how your company can use IAM with Data Transfer Terminal, see [How Data Transfer Terminal works with IAM](security-iam-service-with-iam.md).

 **IAM administrator** – If you’re an IAM administrator, you might want to learn details about how you can write policies to manage access to Data Transfer Terminal. To view example Data Transfer Terminal identity-based policies that you can use in IAM, see [Identity-based policy examples for AWS Data Transfer Terminal](security-iam-id-based-policy-examples.md).

## Authenticating with identities


Authentication is how you sign in to AWS using your identity credentials. You must be *authenticated* (signed in to AWS) as the AWS account root user, as an IAM user, or by assuming an IAM role.

You can sign in to AWS as a federated identity by using credentials provided through an identity source. AWS IAM Identity Center (IAM Identity Center) users, your company’s single sign-on authentication, and your Google or Facebook credentials are examples of federated identities. When you sign in as a federated identity, your administrator previously set up identity federation using IAM roles. When you access AWS by using federation, you are indirectly assuming a role.

Depending on the type of user you are, you can sign in to the AWS Management Console or the AWS access portal. For more information about signing in to AWS, see [How to sign in to your AWS account](https://docs.aws.amazon.com/signin/latest/userguide/how-to-sign-in.html) in the * AWS Sign-In User Guide*.

If you access AWS programmatically, AWS provides a software development kit (SDK) and a command line interface (CLI) to cryptographically sign your requests by using your credentials. If you don’t use AWS tools, you must sign requests yourself. For more information about using the recommended method to sign requests yourself, see [AWS Signature Version 4 for API requests](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_sigv.html) in the *IAM User Guide*.

Regardless of the authentication method that you use, you might be required to provide additional security information. For example, AWS recommends that you use multi-factor authentication (MFA) to increase the security of your account. To learn more, see [Multi-factor authentication](https://docs.aws.amazon.com/singlesignon/latest/userguide/enable-mfa.html) in the * AWS IAM Identity Center User Guide* and [AWS Multi-factor authentication in IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_mfa.html) in the *IAM User Guide*.

### AWS account root user


When you create an AWS account, you begin with one sign-in identity that has complete access to all AWS services and resources in the account. This identity is called the AWS account *root user* and is accessed by signing in with the email address and password that you used to create the account. We strongly recommend that you don’t use the root user for your everyday tasks. Safeguard your root user credentials and use them to perform the tasks that only the root user can perform. For the complete list of tasks that require you to sign in as the root user, see [Tasks that require root user credentials](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_root-user.html#root-user-tasks) in the *IAM User Guide*.

### Federated identity


As a best practice, require human users, including users that require administrator access, to use federation with an identity provider to access AWS services by using temporary credentials.

A *federated identity* is a user from your enterprise user directory, a web identity provider, the AWS Directory Service, the Identity Center directory, or any user that accesses AWS services by using credentials provided through an identity source. When federated identities access AWS accounts, they assume roles, and the roles provide temporary credentials.

For centralized access management, we recommend that you use AWS IAM Identity Center. You can create users and groups in IAM Identity Center, or you can connect and synchronize to a set of users and groups in your own identity source for use across all your AWS accounts and applications. For information about IAM Identity Center, see [What is IAM Identity Center?](https://docs.aws.amazon.com/singlesignon/latest/userguide/what-is.html) in the * AWS IAM Identity Center User Guide*.

### IAM users and groups


An * [IAM user](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_users.html) * is an identity within your AWS account that has specific permissions for a single person or application. Where possible, we recommend relying on temporary credentials instead of creating IAM users who have long-term credentials such as passwords and access keys. However, if you have specific use cases that require long-term credentials with IAM users, we recommend that you rotate access keys. For more information, see [Rotate access keys regularly for use cases that require long-term credentials](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#rotate-credentials) in the *IAM User Guide*.

An [IAM group](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_groups.html) is an identity that specifies a collection of IAM users. You can’t sign in as a group. You can use groups to specify permissions for multiple users at a time. Groups make permissions easier to manage for large sets of users. For example, you could have a group named *IAMAdmins* and give that group permissions to administer IAM resources.

Users are different from roles. A user is uniquely associated with one person or application, but a role is intended to be assumable by anyone who needs it. Users have permanent long-term credentials, but roles provide temporary credentials. To learn more, see [Use cases for IAM users](https://docs.aws.amazon.com/IAM/latest/UserGuide/gs-identities-iam-users.html) in the *IAM User Guide*.

### IAM roles


An * [IAM role](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles.html) * is an identity within your AWS account that has specific permissions. It is similar to an IAM user, but is not associated with a specific person. To temporarily assume an IAM role in the AWS Management Console, you can [switch from a user to an IAM role (console)](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-console.html). You can assume a role by calling an AWS CLI or AWS API operation or by using a custom URL. For more information about methods for using roles, see [Methods to assume a role](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_manage-assume.html) in the *IAM User Guide*.

IAM roles with temporary credentials are useful in the following situations:
+  **Federated user access** – To assign permissions to a federated identity, you create a role and define permissions for the role. When a federated identity authenticates, the identity is associated with the role and is granted the permissions that are defined by the role. For information about roles for federation, see [Create a role for a third-party identity provider (federation)](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_create_for-idp.html) in the *IAM User Guide*. If you use IAM Identity Center, you configure a permission set. To control what your identities can access after they authenticate, IAM Identity Center correlates the permission set to a role in IAM. For information about permissions sets, see [Permission sets](https://docs.aws.amazon.com/singlesignon/latest/userguide/permissionsetsconcept.html) in the * AWS IAM Identity Center User Guide*.
+  **Temporary IAM user permissions** – An IAM user or role can assume an IAM role to temporarily take on different permissions for a specific task.
+  **Cross-account access** – You can use an IAM role to allow someone (a trusted principal) in a different account to access resources in your account. Roles are the primary way to grant cross-account access. However, with some AWS services, you can attach a policy directly to a resource (instead of using a role as a proxy). To learn the difference between roles and resource-based policies for cross-account access, see [Cross account resource access in IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies-cross-account-resource-access.html) in the *IAM User Guide*.
+  **Cross-service access** – Some AWS services use features in other AWS services. For example, when you make a call in a service, it’s common for that service to run applications in Amazon EC2 or store objects in Amazon S3. A service might do this using the calling principal’s permissions, using a service role, or using a service-linked role.
  +  **Forward access sessions (FAS)** – When you use an IAM user or role to perform actions in AWS, you are considered a principal. When you use some services, you might perform an action that then initiates another action in a different service. FAS uses the permissions of the principal calling an AWS service, combined with the requesting AWS service to make requests to downstream services. FAS requests are only made when a service receives a request that requires interactions with other AWS services or resources to complete. In this case, you must have permissions to perform both actions. For policy details when making FAS requests, see [Forward access sessions](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_forward_access_sessions.html).
  +  **Service role** – A service role is an [IAM role](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles.html) that a service assumes to perform actions on your behalf. An IAM administrator can create, modify, and delete a service role from within IAM. For more information, see [Create a role to delegate permissions to an AWS service](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_create_for-service.html) in the *IAM User Guide*.
  +  **Service-linked role** – A service-linked role is a type of service role that is linked to an AWS service. The service can assume the role to perform an action on your behalf. Service-linked roles appear in your AWS account and are owned by the service. An IAM administrator can view, but not edit the permissions for service-linked roles.
+  **Applications running on Amazon EC2** – You can use an IAM role to manage temporary credentials for applications that are running on an EC2 instance and making AWS CLI or AWS API requests. This is preferable to storing access keys within the EC2 instance. To assign an AWS role to an EC2 instance and make it available to all of its applications, you create an instance profile that is attached to the instance. An instance profile contains the role and enables programs that are running on the EC2 instance to get temporary credentials. For more information, see [Use an IAM role to grant permissions to applications running on Amazon EC2 instances](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-ec2.html) in the *IAM User Guide*.

## Managing access using policies


You control access in AWS by creating policies and attaching them to AWS identities or resources. A policy is an object in AWS that, when associated with an identity or resource, defines their permissions. AWS evaluates these policies when a principal (user, root user, or role session) makes a request. Permissions in the policies determine whether the request is allowed or denied. Most policies are stored in AWS as JSON documents. For more information about the structure and contents of JSON policy documents, see [Overview of JSON policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#access_policies-json) in the *IAM User Guide*.

Administrators can use AWS JSON policies to specify who has access to what. That is, which **principal** can perform **actions** on what **resources**, and under what **conditions**.

By default, users and roles have no permissions. To grant users permission to perform actions on the resources that they need, an IAM administrator can create IAM policies. The administrator can then add the IAM policies to roles, and users can assume the roles.

IAM policies define permissions for an action regardless of the method that you use to perform the operation. For example, suppose that you have a policy that allows the `iam:GetRole` action. A user with that policy can get role information from the AWS Management Console, the AWS CLI, or the AWS API.

### Identity-based policies


Identity-based policies are JSON permissions policy documents that you can attach to an identity, such as an IAM user, group of users, or role. These policies control what actions users and roles can perform, on which resources, and under what conditions. To learn how to create an identity-based policy, see [Define custom IAM permissions with customer managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_create.html) in the *IAM User Guide*.

Identity-based policies can be further categorized as *inline policies* or *managed policies*. Inline policies are embedded directly into a single user, group, or role. Managed policies are standalone policies that you can attach to multiple users, groups, and roles in your AWS account. Managed policies include AWS managed policies and customer managed policies. To learn how to choose between a managed policy or an inline policy, see [Choose between managed policies and inline policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies-choosing-managed-or-inline.html) in the *IAM User Guide*.

### Resource-based policies


Resource-based policies are JSON policy documents that you attach to a resource. Examples of resource-based policies are IAM *role trust policies* and Amazon S3 *bucket policies*. In services that support resource-based policies, service administrators can use them to control access to a specific resource. For the resource where the policy is attached, the policy defines what actions a specified principal can perform on that resource and under what conditions. You must [specify a principal](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_principal.html) in a resource-based policy. Principals can include accounts, users, roles, federated users, or AWS services.

Resource-based policies are inline policies that are located in that service. You can’t use AWS managed policies from IAM in a resource-based policy.

### Access control lists (ACLs)


Access control lists (ACLs) control which principals (account members, users, or roles) have permissions to access a resource. ACLs are similar to resource-based policies, although they do not use the JSON policy document format.

Amazon S3, AWS WAF, and Amazon VPC are examples of services that support ACLs. To learn more about ACLs, see [Access control list (ACL) overview](https://docs.aws.amazon.com/AmazonS3/latest/userguide/acl-overview.html) in the *Amazon Simple Storage Service Developer Guide*.

### Other policy types


 AWS supports additional, less-common policy types. These policy types can set the maximum permissions granted to you by the more common policy types.
+  **Permissions boundaries** – A permissions boundary is an advanced feature in which you set the maximum permissions that an identity-based policy can grant to an IAM entity (IAM user or role). You can set a permissions boundary for an entity. The resulting permissions are the intersection of an entity’s identity-based policies and its permissions boundaries. Resource-based policies that specify the user or role in the `Principal` field are not limited by the permissions boundary. An explicit deny in any of these policies overrides the allow. For more information about permissions boundaries, see [Permissions boundaries for IAM entities](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_boundaries.html) in the *IAM User Guide*.
+  **Service control policies (SCPs)** – SCPs are JSON policies that specify the maximum permissions for an organization or organizational unit (OU) in AWS Organizations. AWS Organizations is a service for grouping and centrally managing multiple AWS accounts that your business owns. If you enable all features in an organization, then you can apply service control policies (SCPs) to any or all of your accounts. The SCP limits permissions for entities in member accounts, including each AWS account root user. For more information about Organizations and SCPs, see [Service control policies](https://docs.aws.amazon.com/organizations/latest/userguide/orgs_manage_policies_scps.html) in the * AWS Organizations User Guide*.
+  **Resource control policies (RCPs)** – RCPs are JSON policies that you can use to set the maximum available permissions for resources in your accounts without updating the IAM policies attached to each resource that you own. The RCP limits permissions for resources in member accounts and can impact the effective permissions for identities, including the AWS account root user, regardless of whether they belong to your organization. For more information about Organizations and RCPs, including a list of AWS services that support RCPs, see [Resource control policies (RCPs)](https://docs.aws.amazon.com/organizations/latest/userguide/orgs_manage_policies_rcps.html) in the * AWS Organizations User Guide*.
+  **Session policies** – Session policies are advanced policies that you pass as a parameter when you programmatically create a temporary session for a role or federated user. The resulting session’s permissions are the intersection of the user or role’s identity-based policies and the session policies. Permissions can also come from a resource-based policy. An explicit deny in any of these policies overrides the allow. For more information, see [Session policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session) in the *IAM User Guide*.

### Multiple policy types


When multiple types of policies apply to a request, the resulting permissions are more complicated to understand. To learn how AWS determines whether to allow a request when multiple policy types are involved, see [Policy evaluation logic](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_evaluation-logic.html) in the *IAM User Guide*.

# How Data Transfer Terminal works with IAM


Before you use IAM to manage access to Data Transfer Terminal, learn what IAM features are available to use with Data Transfer Terminal.


| IAM feature | Data Transfer Terminal support | 
| --- | --- | 
|   [Identity-based policies](#security-iam-service-with-iam-id-based-policies)   |  Yes  | 
|   [Resource-based policies](#security-iam-service-with-iam-resource-based-policies)   |  No  | 
|   [Policy actions](#security-iam-service-with-iam-id-based-policies-actions)   |  Yes  | 
|   [Policy resources](#security-iam-service-with-iam-id-based-policies-resources)   |  Yes  | 
|   [Policy condition keys](#security-iam-service-with-iam-id-based-policies-conditionkeys)   |  Yes  | 
|   [ACLs](#security-iam-service-with-iam-acls)   |  No  | 
|   [ABAC (tags in policies)](#security-iam-service-with-iam-tags)   |  No  | 
|   [Temporary credentials](#security-iam-service-with-iam-roles-tempcreds)   |  Yes  | 
|   [Principal permissions](#security-iam-service-with-iam-principal-permissions)   |  No  | 
|   [Service roles](#security-iam-service-with-iam-roles-service)   |  No  | 
|   [Service-linked roles](#security-iam-service-with-iam-roles-service-linked)   |  No  | 

To get a high-level view of how Data Transfer Terminal and other AWS services work with most IAM features, see [AWS services that work with IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_aws-services-that-work-with-iam.html) in the *IAM User Guide*.

## Identity-based policies for Data Transfer Terminal


 **Supports identity-based policies:** Yes

Identity-based policies are JSON permissions policy documents that you can attach to an identity, such as an IAM user, group of users, or role. These policies control what actions users and roles can perform, on which resources, and under what conditions. To learn how to create an identity-based policy, see [Define custom IAM permissions with customer managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_create.html) in the *IAM User Guide*.

With IAM identity-based policies, you can specify allowed or denied actions and resources as well as the conditions under which actions are allowed or denied. You can’t specify the principal in an identity-based policy because it applies to the user or role to which it is attached. To learn about all of the elements that you can use in a JSON policy, see [IAM JSON policy elements reference](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements.html) in the *IAM User Guide*.

### Identity-based policy examples for Data Transfer Terminal


To view examples of Data Transfer Terminal identity-based policies, see [Identity-based policy examples for AWS Data Transfer Terminal](security-iam-id-based-policy-examples.md).

## Resource-based policies within Data Transfer Terminal


 **Supports resource-based policies:** No

Resource-based policies are JSON policy documents that you attach to a resource. Examples of resource-based policies are IAM *role trust policies* and Amazon S3 *bucket policies*. In services that support resource-based policies, service administrators can use them to control access to a specific resource. For the resource where the policy is attached, the policy defines what actions a specified principal can perform on that resource and under what conditions. You must [specify a principal](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_principal.html) in a resource-based policy. Principals can include accounts, users, roles, federated users, or AWS services.

To enable cross-account access, you can specify an entire account or IAM entities in another account as the principal in a resource-based policy. Adding a cross-account principal to a resource-based policy is only half of establishing the trust relationship. When the principal and the resource are in different AWS accounts, an IAM administrator in the trusted account must also grant the principal entity (user or role) permission to access the resource. They grant permission by attaching an identity-based policy to the entity. However, if a resource-based policy grants access to a principal in the same account, no additional identity-based policy is required. For more information, see [Cross account resource access in IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies-cross-account-resource-access.html) in the *IAM User Guide*.

## Policy actions for Data Transfer Terminal


 **Supports policy actions:** Yes

Administrators can use AWS JSON policies to specify who has access to what. That is, which **principal** can perform **actions** on what **resources**, and under what **conditions**.

The `Action` element of a JSON policy describes the actions that you can use to allow or deny access in a policy. Policy actions usually have the same name as the associated AWS API operation. There are some exceptions, such as *permission-only actions* that don’t have a matching API operation. There are also some operations that require multiple actions in a policy. These additional actions are called *dependent actions*.

Include actions in a policy to grant permissions to perform the associated operation.

To see a list of Data Transfer Terminal actions, see [Actions Defined by AWS Data Transfer Terminal](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_your_service.html#your_service-actions-as-permissions) in the *Service Authorization Reference*.

Policy actions in Data Transfer Terminal use the following prefix before the action:

```
datatransferterminal
```

To specify multiple actions in a single statement, separate them with commas.

```
"Action": [
      "datatransferterminal:action1",
      "datatransferterminal:action2"
         ]
```

To view examples of Data Transfer Terminal identity-based policies, see [Identity-based policy examples for AWS Data Transfer Terminal](security-iam-id-based-policy-examples.md).

## Policy resources for Data Transfer Terminal


 **Supports policy resources:** Yes

Administrators can use AWS JSON policies to specify who has access to what. That is, which **principal** can perform **actions** on what **resources**, and under what **conditions**.

The `Resource` JSON policy element specifies the object or objects to which the action applies. Statements must include either a `Resource` or a `NotResource` element. As a best practice, specify a resource using its [Amazon Resource Name (ARN)](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference-arns.html). You can do this for actions that support a specific resource type, known as *resource-level permissions*.

For actions that don’t support resource-level permissions, such as listing operations, use a wildcard (\$1) to indicate that the statement applies to all resources.

```
"Resource": "*"
```

To see a list of Data Transfer Terminal resource types and their ARNs, see [Resources Defined by AWS Data Transfer Terminal](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_your_service.html#your_service-resources-for-iam-policies) in the *Service Authorization Reference*. To learn with which actions you can specify the ARN of each resource, see [Actions Defined by AWS Data Transfer Terminal](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_your_service.html#your_service-actions-as-permissions).

To view examples of Data Transfer Terminal identity-based policies, see [Identity-based policy examples for AWS Data Transfer Terminal](security-iam-id-based-policy-examples.md).

## Policy condition keys for Data Transfer Terminal


 **Supports service-specific policy condition keys:** Yes

Administrators can use AWS JSON policies to specify who has access to what. That is, which **principal** can perform **actions** on what **resources**, and under what **conditions**.

The `Condition` element (or `Condition`block) lets you specify conditions in which a statement is in effect. The `Condition` element is optional. You can create conditional expressions that use [condition operators](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_condition_operators.html), such as equals or less than, to match the condition in the policy with values in the request.

If you specify multiple `Condition` elements in a statement, or multiple keys in a single `Condition` element, AWS evaluates them using a logical `AND` operation. If you specify multiple values for a single condition key, AWS evaluates the condition using a logical `OR` operation. All of the conditions must be met before the statement’s permissions are granted.

You can also use placeholder variables when you specify conditions. For example, you can grant an IAM user permission to access a resource only if it is tagged with their IAM user name. For more information, see [IAM policy elements: variables and tags](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_variables.html) in the *IAM User Guide*.

 AWS supports global condition keys and service-specific condition keys. To see all AWS global condition keys, see [AWS global condition context keys](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_condition-keys.html) in the *IAM User Guide*.

To see a list of Data Transfer Terminal condition keys, see [Condition Keys for AWS Data Transfer Terminal](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_your_service.html#your_service-policy-keys) in the *Service Authorization Reference*. To learn with which actions and resources you can use a condition key, see [Actions Defined by AWS Data Transfer Terminal](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_your_service.html#your_service-actions-as-permissions).

To view examples of Data Transfer Terminal identity-based policies, see [Identity-based policy examples for AWS Data Transfer Terminal](security-iam-id-based-policy-examples.md).

## ACLs in Data Transfer Terminal


 **Supports ACLs:** No

Access control lists (ACLs) control which principals (account members, users, or roles) have permissions to access a resource. ACLs are similar to resource-based policies, although they do not use the JSON policy document format.

## ABAC with Data Transfer Terminal


 **Supports ABAC (tags in policies):** No

Attribute-based access control (ABAC) is an authorization strategy that defines permissions based on attributes. In AWS, these attributes are called *tags*. You can attach tags to IAM entities (users or roles) and to many AWS resources. Tagging entities and resources is the first step of ABAC. Then you design ABAC policies to allow operations when the principal’s tag matches the tag on the resource that they are trying to access.

ABAC is helpful in environments that are growing rapidly and helps with situations where policy management becomes cumbersome.

To control access based on tags, you provide tag information in the [condition element](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_condition.html) of a policy using the `aws:ResourceTag/[replaceable]`key-name` `, , or aws:TagKeys condition keys.` If a service supports all three condition keys for every resource type, then the value is **Yes** for the service. If a service supports all three condition keys for only some resource types, then the value is **Partial**. For more information about ABAC, see [Define permissions with ABAC authorization](https://docs.aws.amazon.com/IAM/latest/UserGuide/introduction_attribute-based-access-control.html) in the *IAM User Guide*. To view a tutorial with steps for setting up ABAC, see [Use attribute-based access control (ABAC)](https://docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_attribute-based-access-control.html) in the *IAM User Guide*. 

### Using temporary credentials with Data Transfer Terminal


 **Supports temporary credentials:** Yes

Some AWS services don’t work when you sign in using temporary credentials. For additional information, including which AWS services work with temporary credentials, see [AWS services that work with IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_aws-services-that-work-with-iam.html) in the *IAM User Guide*.

You are using temporary credentials if you sign in to the AWS Management Console using any method except a user name and password. For example, when you access AWS using your company’s single sign-on (SSO) link, that process automatically creates temporary credentials. You also automatically create temporary credentials when you sign in to the console as a user and then switch roles. For more information about switching roles, see [Switch from a user to an IAM role (console)](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-console.html) in the *IAM User Guide*.

You can manually create temporary credentials using the AWS CLI or AWS API. You can then use those temporary credentials to access AWS. AWS recommends that you dynamically generate temporary credentials instead of using long-term access keys. For more information, see [Temporary security credentials in IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp.html).

### Cross-service principal permissions for Data Transfer Terminal


 **Supports forward access sessions (FAS):** No

When you use an IAM user or role to perform actions in AWS, you are considered a principal. When you use some services, you might perform an action that then initiates another action in a different service. FAS uses the permissions of the principal calling an AWS service, combined with the requesting AWS service to make requests to downstream services. FAS requests are only made when a service receives a request that requires interactions with other AWS services or resources to complete. In this case, you must have permissions to perform both actions. For policy details when making FAS requests, see [Forward access sessions](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_forward_access_sessions.html).

### Service roles for Data Transfer Terminal


 **Supports service roles:** No

A service role is an [IAM role](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles.html) that a service assumes to perform actions on your behalf. An IAM administrator can create, modify, and delete a service role from within IAM. For more information, see [Create a role to delegate permissions to an AWS service](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_create_for-service.html) in the *IAM User Guide*.

**Warning**  
Changing the permissions for a service role might break Data Transfer Terminal functionality. Edit service roles only when Data Transfer Terminal provides guidance to do so.

### Service-linked roles for Data Transfer Terminal


 **Supports service-linked roles:** No

A service-linked role is a type of service role that is linked to an AWS service. The service can assume the role to perform an action on your behalf. Service-linked roles appear in your AWS account and are owned by the service. An IAM administrator can view, but not edit the permissions for service-linked roles.

For details about creating or managing service-linked roles, see [AWS services that work with IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_aws-services-that-work-with-iam.html). Find a service in the table that includes a `Yes` in the **Service-linked role** column. Choose the **Yes** link to view the service-linked role documentation for that service.

# Identity-based policy examples for AWS Data Transfer Terminal


By default, users and roles don’t have permission to create or modify Data Transfer Terminal resources. They also can’t perform tasks by using the AWS Management Console, AWS Command Line Interface (AWS CLI), or AWS API. To grant users permission to perform actions on the resources that they need, an IAM administrator can create IAM policies. The administrator can then add the IAM policies to roles, and users can assume the roles.

To learn how to create an IAM identity-based policy by using these example JSON policy documents, see [Create IAM policies (console)](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_create-console.html) in the *IAM User Guide*.

For details about actions and resource types defined by , including the format of the ARNs for each of the resource types, see [Actions](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_your_service.html) in the *Service Authorization Reference*.

**Topics**
+ [

## Policy best practices
](#security-iam-service-with-iam-policy-best-practices)
+ [

## Using the Data Transfer Terminal console
](#security-iam-id-based-policy-examples-console)
+ [

## Allow users to view their own permissions
](#security-iam-id-based-policy-examples-view-own-permissions)

## Policy best practices


Identity-based policies determine whether someone can create, access, or delete Data Transfer Terminal resources in your account. These actions can incur costs for your AWS account. When you create or edit identity-based policies, follow these guidelines and recommendations:
+  **Get started with AWS managed policies and move toward least-privilege permissions** – To get started granting permissions to your users and workloads, use the * AWS managed policies* that grant permissions for many common use cases. They are available in your AWS account. We recommend that you reduce permissions further by defining AWS customer managed policies that are specific to your use cases. For more information, see [AWS managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html#aws-managed-policies) or [AWS managed policies for job functions](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_job-functions.html) in the *IAM User Guide*.
+  **Apply least-privilege permissions** – When you set permissions with IAM policies, grant only the permissions required to perform a task. You do this by defining the actions that can be taken on specific resources under specific conditions, also known as *least-privilege permissions*. For more information about using IAM to apply permissions, see [Policies and permissions in IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html) in the *IAM User Guide*.
+  **Use conditions in IAM policies to further restrict access** – You can add a condition to your policies to limit access to actions and resources. For example, you can write a policy condition to specify that all requests must be sent using SSL. You can also use conditions to grant access to service actions if they are used through a specific AWS service, such as AWS CloudFormation. For more information, see [IAM JSON policy elements: Condition](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_condition.html) in the *IAM User Guide*.
+  **Use IAM Access Analyzer to validate your IAM policies to ensure secure and functional permissions** – IAM Access Analyzer validates new and existing policies so that the policies adhere to the IAM policy language (JSON) and IAM best practices. IAM Access Analyzer provides more than 100 policy checks and actionable recommendations to help you author secure and functional policies. For more information, see [Validate policies with IAM Access Analyzer](https://docs.aws.amazon.com/IAM/latest/UserGuide/access-analyzer-policy-validation.html) in the *IAM User Guide*.
+  **Require multi-factor authentication (MFA)** – If you have a scenario that requires IAM users or a root user in your AWS account, turn on MFA for additional security. To require MFA when API operations are called, add MFA conditions to your policies. For more information, see [Secure API access with MFA](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_mfa_configure-api-require.html) in the *IAM User Guide*.

For more information about best practices in IAM, see [Security best practices in IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html) in the *IAM User Guide*.

## Using the Data Transfer Terminal console


To access the AWS Data Transfer Terminal console, you must have a minimum set of permissions. These permissions must allow you to list and view details about the Data Transfer Terminal resources in your AWS account. If you create an identity-based policy that is more restrictive than the minimum required permissions, the console won’t function as intended for entities (users or roles) with that policy.

You don’t need to allow minimum console permissions for users that are making calls only to the AWS CLI or the AWS API. Instead, allow access to only the actions that match the API operation that they’re trying to perform.

To ensure that users and roles can still use the Data Transfer Terminal console, also attach the Data Transfer Terminal ` ConsoleAccess ` or ` ReadOnly ` AWS managed policy to the entities. For more information, see [Adding permissions to a user](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_users_change-permissions.html#users_change_permissions-add-console) in the *IAM User Guide*.

## Allow users to view their own permissions


This example shows how you might create a policy that allows IAM users to view the inline and managed policies that are attached to their user identity. This policy includes permissions to complete this action on the console or programmatically using the AWS CLI or AWS API.

```
{
    "Version": "2012-10-17", 		 	 	 
    "Statement": [
        {
            "Sid": "ViewOwnUserInfo",
            "Effect": "Allow",
            "Action": [
                "iam:GetUserPolicy",
                "iam:ListGroupsForUser",
                "iam:ListAttachedUserPolicies",
                "iam:ListUserPolicies",
                "iam:GetUser"
            ],
            "Resource": ["arn:aws:iam::*:user/${aws:username}"]
        },
        {
            "Sid": "NavigateInConsole",
            "Effect": "Allow",
            "Action": [
                "iam:GetGroupPolicy",
                "iam:GetPolicyVersion",
                "iam:GetPolicy",
                "iam:ListAttachedGroupPolicies",
                "iam:ListGroupPolicies",
                "iam:ListPolicyVersions",
                "iam:ListPolicies",
                "iam:ListUsers"
            ],
            "Resource": "*"
        }
    ]
}
```

# Troubleshooting AWS Data Transfer Terminal identity and access


Use the following information to help you diagnose and fix common issues that you might encounter when working with Data Transfer Terminal and IAM.

**Topics**
+ [

## I am not authorized to perform an action in Data Transfer Terminal
](#security-iam-troubleshoot-no-permissions)
+ [

## I want to allow people outside of my AWS account to access my Data Transfer Terminal resources
](#security-iam-troubleshoot-cross-account-access)

## I am not authorized to perform an action in Data Transfer Terminal


If you’re unable to view or schedule reservations in the AWS Data Transfer Terminal console, you may not have the required permissions. Contact your account administrator to configure an IAM identity policy that grants you access and appropriate permissions.

## I want to allow people outside of my AWS account to access my Data Transfer Terminal resources


You can create a role that users in other accounts or people outside of your organization can use to access your resources. You can specify who is trusted to assume the role. For services that support resource-based policies or access control lists (ACLs), you can use those policies to grant people access to your resources.

To learn more, consult the following:
+ To learn whether Data Transfer Terminal supports these features, see [How Data Transfer Terminal works with IAM](security-iam-service-with-iam.md).
+ To learn how to provide access to your resources across AWS accounts that you own, see [Providing access to an IAM user in another AWS account that you own](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_common-scenarios_aws-accounts.html) in the *IAM User Guide*.
+ To learn how to provide access to your resources to third-party AWS accounts, see [Providing access to AWS accounts owned by third parties](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_common-scenarios_third-party.html) in the *IAM User Guide*.
+ To learn how to provide access through identity federation, see [Providing access to externally authenticated users (identity federation)](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_common-scenarios_federated-users.html) in the *IAM User Guide*.
+ To learn the difference between using roles and resource-based policies for cross-account access, see [Cross account resource access in IAM](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies-cross-account-resource-access.html) in the *IAM User Guide*.

# Data Transfer Terminal API references: Actions and resources


When creating AWS Identity and Access Management (IAM) policies, this page can help you understand the relationship between AWS Data Transfer Terminal API operations, the corresponding actions that you can grant permissions to perform, and the AWS resources for which you can grant the permissions.

In general, here’s how you add Data Transfer Terminal permissions to your policy:
+ Specify an action in the `Action` element. The value includes a `datatransferterminal:` prefix and the API operation name. For example, `datatransferterminal:CreateTask`.
+ Specify an AWS resource related to the action in the `Resource` element.

You can also use AWS condition keys in your Data Transfer Terminal policies. For a complete list of AWS keys, see [Available keys](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements.html#AvailableKeys) in the *IAM User Guide*.

 **Data Transfer Terminal API operations and corresponding actions** 

CreateTransferTeam  
+  **Action:** `datatransferterminal:CreateTransferTeam` 

   **Resource:** `None` 

GetTransferTeam  
+  **Action:** `datatransferterminal:GetTransferTeam` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

UpdateTransferTeam  
+  **Action:** `datatransferterminal:UpdateTransferTeam` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

DeleteTransferTeam  
+  **Action:** `datatransferterminal:DeleteTransferTeam` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

ListTransferTeams  
+  **Action:** `datatransferterminal:ListTransferTeams` 

   **Resource:** `None` 

RegisterPerson  
+  **Action:** `datatransferterminal:RegisterPerson` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

GetPerson  
+  **Action:** `datatransferterminal:GetPerson` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId`/person/$[replaceable]`PersonId````

   **Dependent action:** `datatransferterminal:GetTransferTeam` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

DeregisterPerson  
+  **Action:** `datatransferterminal:DeregisterPerson` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId`/person/$[replaceable]`PersonId````

   **Dependent action:** `datatransferterminal:GetTransferTeam` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

ListPersons  
+  **Action:** `datatransferterminal:ListPersons` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

CreateReservation  
+  **Action:** `datatransferterminal:CreateReservation` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

   **Dependent action:** `datatransferterminal:GetTransferTeam` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

   **Dependent action:** `datatransferterminal:GetPerson` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId`/person/$[replaceable]`PersonId````

   **Dependent action:** `datatransferterminal:GetFacility` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:::facility/$[replaceable]`FacilityId````

GetReservation  
+  **Action:** `datatransferterminal:GetReservation` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId`/reservation/$[replaceable]`ReservationId````

   **Dependent action:** `datatransferterminal:GetTransferTeam` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

UpdateReservation  
+  **Action:** `datatransferterminal:UpdateReservation` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId`/reservation/$[replaceable]`ReservationId````

   **Dependent action:** `datatransferterminal:GetTransferTeam` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

   **Dependent action:** `datatransferterminal:GetPerson` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId`/person/$[replaceable]`PersonId````

DeleteReservation  
+  **Action:** `datatransferterminal:DeleteReservation` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId`/person/$[replaceable]`PersonId````

   **Dependent action:** `datatransferterminal:GetTransferTeam` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

ListReservations  
+  **Action:** `datatransferterminal:ListReservations` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:$[replaceable]`Region`:$[replaceable]`Account`:transfer-team/$[replaceable]`TransferTeamId````

ListFacilities  
+  **Action:** `datatransferterminal:ListFacilities` 

   **Resource:** `None` 

GetFacility  
+  **Action:** `datatransferterminal:GetFacility` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:::facility/$[replaceable]`FacilityId````

GetFacilityAvailability  
+  **Action:** `datatransferterminal:GetFacilityAvailability` 

   **Resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:::facility/$[replaceable]`FacilityId`/availability` 

   **Dependent action:** `datatransferterminal:GetFacility` 

   **Dependent resource:** `arn:aws::$[replaceable]`Partition`:datatransferterminal:::facility/$[replaceable]`FacilityId`/availability`