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 3. Documentation
 4. AWS Identity and Access Management
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AWS IDENTITY AND ACCESS MANAGEMENT


USER GUIDE

 * What is IAM?
    * How IAM works
    * Users in AWS
    * Permissions and policies in IAM
    * What is ABAC?
    * Security features outside IAM
    * Quick links to common tasks
    * Working with AWS SDKs

 * Getting set up
 * Getting started
    * How IAM users sign in
    * IAM console search

 * Tutorials
    * Delegate access to the billing console
    * Delegate access across AWS accounts using roles
    * Create a customer managed policy
    * Use attribute-based access control (ABAC)
       * Use SAML session tags for ABAC
   
    * Permit users to manage their credentials and MFA settings

 * Identities
    * Users
       * Adding a user
       * Controlling user access to the console
       * How IAM users sign in to AWS
          * Using MFA devices with your IAM sign-in page
      
       * Managing users
       * Changing permissions for a user
       * Managing passwords
          * Changing the root user password
          * Setting a password policy
          * Managing user passwords
          * Permitting IAM users to change their own passwords
          * How an IAM user changes their own password
      
       * Access keys
       * Retrieving lost passwords or access keys
       * Multi-factor authentication (MFA)
          * Enabling MFA devices
             * Enabling a virtual MFA device (console)
             * Enabling a FIDO security key (console)
                * Supported configurations for using FIDO security keys
            
             * Enabling a hardware TOTP token (console)
             * Enabling and managing virtual MFA devices (AWS CLI or AWS API)
         
          * Checking MFA status
          * Resynchronizing virtual and hardware MFA devices
          * Deactivating MFA devices
          * What if an MFA device is lost or stops working?
          * Configuring MFA-protected API access
          * Sample code: MFA
      
       * Finding unused credentials
       * Getting credential reports
       * Using IAM with CodeCommit
       * Using IAM with Amazon Keyspaces
       * Managing server certificates
   
    * User groups
       * Creating user groups
       * Managing user groups
          * Listing IAM user groups
          * Adding and removing users in an IAM user group
          * Attaching a policy to an IAM user group
          * Renaming an IAM user group
          * Deleting a user group
   
    * Roles
       * Terms and concepts
       * Common scenarios
          * Providing access across AWS accounts
          * Providing access for non AWS workloads
          * Providing access to third-party AWS accounts
             * Using an external ID for third-party access
         
          * Providing access to AWS services
          * The confused deputy problem
          * Providing access through identity federation
      
       * Identity providers and federation
          * About web identity federation
             * Using Amazon Cognito for mobile apps
             * Using web identity federation API operations for mobile apps
             * Identifying users with web identity federation
             * Additional resources for web identity federation
         
          * About SAML 2.0 federation
          * Creating IAM identity providers
             * Creating OIDC identity providers
                * Obtaining the thumbprint for an OIDC Identity Provider
            
             * Creating IAM SAML identity providers
                * Configuring relying party trust and claims
                * Integrating third-party SAML solution providers with AWS
                * Configuring SAML assertions for the authentication response
         
          * Enable SAML 2.0 federated users to access the AWS console
          * Enabling custom identity broker access to the AWS console
      
       * Service-linked roles
       * Creating roles
          * Creating a role for an IAM user
          * Creating a role for an AWS service
          * Creating a role for identity federation
             * Creating a role for web Identity/OIDC federation
             * Creating a role for SAML 2.0 federation
         
          * Creating a role using custom trust policies
          * Examples of policies for delegating access
      
       * Using roles
          * Granting a user permissions to switch roles
          * Granting permissions to pass a role to a service
          * Switching roles (console)
          * Switching roles (AWS CLI)
          * Switching roles (Tools for Windows PowerShell)
          * Switching roles (AWS API)
          * Using roles for applications on Amazon EC2
             * Using instance profiles
         
          * Revoking role temporary credentials
      
       * Managing roles
          * Modifying a role
             * Modifying a role (console)
             * Modifying a role (AWS CLI)
             * Modifying a role (AWS API)
         
          * Deleting roles or instance profiles
      
       * Roles vs. resource-based policies
   
    * Tagging IAM resources
       * Tagging IAM users
       * Tagging IAM roles
       * Tagging customer managed policies
       * Tagging IAM identity providers
          * Tagging OpenID Connect (OIDC) identity providers
          * Tagging IAM SAML identity providers
      
       * Tagging instance profiles
       * Tagging server certificates
       * Tagging virtual MFA devices
       * Session tags
   
    * Temporary security credentials
       * Requesting temporary security credentials
       * Using temporary credentials with AWS resources
       * Controlling permissions for temporary security credentials
          * Permissions for AssumeRole API operations
          * Monitor and control actions taken with assumed roles
          * Permissions for GetFederationToken
          * Permissions for GetSessionToken
          * Disabling permissions
          * Granting permissions to create credentials
      
       * Managing AWS STS in an AWS Region
       * Using AWS STS interface VPC endpoints
       * Using bearer tokens
       * Sample applications that use temporary credentials
       * Additional resources for temporary credentials
   
    * AWS account root user
    * Log events with CloudTrail

 * Access management
    * Policies and permissions
       * Managed policies and inline policies
          * Deprecated AWS managed policies
      
       * Permissions boundaries
       * Identity vs resource
       * Controlling access using policies
       * Control access to IAM users and roles using tags
       * Control access to AWS resources using tags
       * Example policies
          * AWS: Specific access during a date range
          * AWS: Enable or disable AWS Regions
          * AWS: Self-manage credentials with MFA (My security credentials)
          * AWS: Specific access with MFA during a date range
          * AWS: Self-manage credentials no MFA (My security credentials)
          * AWS: Self-manage MFA device (My security credentials)
          * AWS: Self-manage console password (My security credentials)
          * AWS: Self-manage password, access keys, & SSH public keys (My
            security credentials)
          * AWS: Deny access based on requested Region
          * AWS: Deny access based on source IP
          * AWS: Deny access to Amazon S3 resources outside your account except
            AWS Data Exchange
          * Data Pipeline: Deny access to pipelines not created by user
          * DynamoDB: Access specific table
          * DynamoDB: Allow access to specific attributes
          * DynamoDB: Allow item access based on a Amazon Cognito ID
          * EC2: Attach or detach volumes to an EC2 instance
          * EC2: Attach or detach tagged EBS volumes
          * EC2: Launch instances in a subnet (includes console)
          * EC2: Manage security groups with the same tags (includes console)
          * EC2: Start or stop instances a user has tagged (includes console)
          * EC2: Start or stop instances based on tags
          * EC2: Start or stop for matching tags
          * EC2: Full access within a Region (includes console)
          * EC2: Start or stop an instance, modify security group (includes
            console)
          * EC2: Requires MFA (GetSessionToken) for operations
          * EC2: Limit terminating instances to IP range
          * IAM: Access the policy simulator API
          * IAM: Access the policy simulator console
          * IAM: Assume tagged roles
          * IAM: Allows and denies multiple services (includes console)
          * IAM: Add specific tag to tagged user
          * IAM: Add a specific tag
          * IAM: Create only tagged users
          * IAM: Generate credential reports
          * IAM: Manage group membership (includes console)
          * IAM: Manage a tag
          * IAM: Pass a role to a service
          * IAM: Read-only console access (no reporting)
          * IAM: Read-only console access
          * IAM: Specific users manage group (includes console)
          * IAM: Setting account password requirements (includes console)
          * IAM: Access the policy simulator API based on user path
          * IAM: Access the policy simulator console based on user path
            (includes console)
          * IAM: MFA self-management
          * IAM: Rotate credentials (includes console)
          * IAM: View Organizations service last accessed information for a
            policy
          * IAM: Apply limited managed policies
          * AWS: Deny access to resources outside your account except AWS
            managed IAM policies
          * Lambda: Service access to DynamoDB
          * RDS: Full access within a Region
          * RDS: Restore databases (includes console)
          * RDS: Full access for tag owners
          * S3: Access bucket if cognito
          * S3: Access federated user home directory (includes console)
          * S3: Full access with recent MFA
          * S3: Access IAM user home directory (includes console)
          * S3: Restrict management to a specific bucket
          * S3: Read and write objects to a specific bucket
          * S3: Read and write to a specific bucket (includes console)
   
    * Managing IAM policies
       * Creating IAM policies
          * Creating IAM policies (console)
          * Creating IAM policies (CLI)
          * Creating IAM policies (API)
      
       * Validating policies
       * Generating policies
       * Testing IAM policies
       * Add or remove identity permissions
       * Versioning IAM policies
       * Editing IAM policies
       * Deleting IAM policies
       * Refining permissions using access information
          * View IAM access information
          * View access information for Organizations
          * Example scenarios
   
    * Understanding policies
       * Policy summary (list of services)
          * Access levels in policy summaries
      
       * Service summary (list of actions)
       * Action summary (list of resources)
       * Example policy summaries
   
    * Permissions required
       * Example policies for IAM

 * Code examples
    * IAM examples
       * Actions
          * Attach a policy to a role
          * Attach a policy to a user
          * Attach an inline policy to a role
          * Create a policy
          * Create a policy version
          * Create a role
          * Create a service-linked role
          * Create a user
          * Create an access key
          * Create an alias for an account
          * Create an inline policy for a user
          * Delete a policy
          * Delete a role
          * Delete a role policy
          * Delete a server certificate
          * Delete a service-linked role
          * Delete a user
          * Delete an access key
          * Delete an account alias
          * Delete an inline policy from a user
          * Detach a policy from a role
          * Detach a policy from a user
          * Generate a credential report
          * Get a credential report
          * Get a detailed authorization report for your account
          * Get a policy
          * Get a policy version
          * Get a role
          * Get a server certificate
          * Get a summary of account usage
          * Get a user
          * Get data about the last use of an access key
          * Get the account password policy
          * List SAML providers
          * List a user's access keys
          * List account aliases
          * List groups
          * List inline policies for a role
          * List inline policies for a user
          * List policies
          * List policies attached to a role
          * List roles
          * List server certificates
          * List users
          * Update a server certificate
          * Update a user
          * Update an access key
      
       * Scenarios
          * Create a user and assume a role
          * Create read-only and read-write users
          * Manage access keys
          * Manage policies
          * Manage roles
          * Manage your account
          * Roll back a policy version
      
       * Cross-service examples
          * Create a long-lived Amazon EMR cluster and run several steps
          * Create a short-lived Amazon EMR cluster and run a step
   
    * AWS STS examples
       * Actions
          * Assume a role
          * Get a session token
      
       * Scenarios
          * Assume an IAM role that requires an MFA token
          * Construct a URL for federated users
          * Get a session token that requires an MFA token

 * Security
    * Data protection
    * Logging and monitoring
    * Compliance validation
    * Resilience
    * Infrastructure security
    * Configuration and vulnerability analysis
    * Security best practices and use cases
       * Security best practices
       * Business use cases
   
    * AWS managed policies

 * IAM Access Analyzer
    * Findings for public and cross-account access
       * How IAM Access Analyzer findings work
       * Getting started with IAM Access Analyzer findings
       * Working with findings
       * Reviewing findings
       * Filtering findings
       * Archiving findings
       * Resolving findings
       * Supported resource types
       * Settings
       * Archive rules
       * Monitoring with EventBridge
       * Security Hub integration
       * Logging with CloudTrail
       * IAM Access Analyzer filter keys
       * Using service-linked roles
   
    * Preview access
       * Previewing access in Amazon S3 console
       * Previewing access with IAM Access Analyzer APIs
   
    * IAM Access Analyzer policy validation
       * Policy check reference
   
    * IAM Access Analyzer policy generation
       * IAM Access Analyzer policy generation and action last accessed support
   
    * IAM Access Analyzer quotas

 * Troubleshooting IAM
    * General issues
    * Access denied error messages
    * IAM policies
    * FIDO security keys
    * IAM roles
    * IAM and Amazon EC2
    * IAM and Amazon S3
    * SAML 2.0 federation
       * Viewing a SAML response in your browser

 * Reference
    * IAM identifiers
    * Quotas, name requirements, and character limits
    * Services that work with IAM
    * Policy reference
       * JSON element reference
          * Version
          * Id
          * Statement
          * Sid
          * Effect
          * Principal
          * NotPrincipal
          * Action
          * NotAction
          * Resource
          * NotResource
          * Condition
             * Condition operators
             * Conditions with multiple keys or values
             * Single-valued vs. multivalued condition keys
         
          * Variables and tags
          * Supported data types
      
       * Policy evaluation logic
          * Cross-account policy evaluation logic
      
       * Policy grammar
       * AWS managed policies for job functions
          * Creating roles and attaching policies (console)
      
       * Global condition keys
       * IAM condition keys
       * Actions, resources, and condition keys

 * Resources
 * Making HTTP query requests
 * Document history

Using AWS Identity and Access Management Access Analyzer - AWS Identity and
Access Management
AWSDocumentationAWS Identity and Access ManagementUser Guide
Identifying resources shared with an external entityValidating
policiesGenerating policies


USING AWS IDENTITY AND ACCESS MANAGEMENT ACCESS ANALYZER

PDFRSS

AWS IAM Access Analyzer provides the following capabilities:

 * IAM Access Analyzer helps identify resources in your organization and
   accounts that are shared with an external entity.

 * IAM Access Analyzer validates IAM policies against policy grammar and best
   practices.

 * IAM Access Analyzer generates IAM policies based on access activity in your
   AWS CloudTrail logs.


IDENTIFYING RESOURCES SHARED WITH AN EXTERNAL ENTITY

IAM Access Analyzer helps you identify the resources in your organization and
accounts, such as Amazon S3 buckets or IAM roles, shared with an external
entity. This lets you identify unintended access to your resources and data,
which is a security risk. IAM Access Analyzer identifies resources shared with
external principals by using logic-based reasoning to analyze the resource-based
policies in your AWS environment. For each instance of a resource shared outside
of your account, IAM Access Analyzer generates a finding. Findings include
information about the access and the external principal granted to it. You can
review findings to determine if the access is intended and safe or if the access
is unintended and a security risk. In addition to helping you identify resources
shared with an external entity, you can use IAM Access Analyzer findings to
preview how your policy affects public and cross-account access to your resource
before deploying resource permissions.

Note

An external entity can be another AWS account, a root user, an IAM user or role,
a federated user, an AWS service, an anonymous user, or other entity that you
can use to create a filter. For more information, see AWS JSON Policy Elements:
Principal.

When you enable IAM Access Analyzer, you create an analyzer for your entire
organization or your account. The organization or account you choose is known as
the zone of trust for the analyzer. The analyzer monitors all of the supported
resources within your zone of trust. Any access to resources by principals
within your zone of trust is considered trusted. Once enabled, IAM Access
Analyzer analyzes the policies applied to all of the supported resources in your
zone of trust. After the first analysis, IAM Access Analyzer analyzes these
policies periodically. If you add a new policy , or change an existing policy,
IAM Access Analyzer analyzes the new or updated policy within about 30 minutes.

When analyzing the policies, if IAM Access Analyzer identifies one that grants
access to an external principal that isn't within your zone of trust, it
generates a finding. Each finding includes details about the resource, the
external entity with access to it, and the permissions granted so that you can
take appropriate action. You can view the details included in the finding to
determine whether the resource access is intentional or a potential risk that
you should resolve. When you add a policy to a resource, or update an existing
policy, IAM Access Analyzer analyzes the policy. IAM Access Analyzer also
analyzes all resource-based policies periodically.

On rare occasions under certain conditions, IAM Access Analyzer does not receive
notification of an added or updated policy. IAM Access Analyzer can take up to 6
hours to generate or resolve findings if you create or delete a multi-region
access point associated with an S3 bucket, or update the policy for the
multi-region access point. Also, if there is a delivery issue with AWS
CloudTrail log delivery, the policy change does not trigger a rescan of the
resource reported in the finding. When this happens, IAM Access Analyzer
analyzes the new or updated policy during the next periodic scan, which is
within 24 hours. If you want to confirm a change you make to a policy resolves
an access issue reported in a finding, you can rescan the resource reported in a
finding by using the Rescan link in the Findings details page, or by using the
StartResourceScan operation of the IAM Access Analyzer API. To learn more, see
Resolving findings.

Important

IAM Access Analyzer analyzes only policies applied to resources in the same AWS
Region where it's enabled. To monitor all resources in your AWS environment, you
must create an analyzer to enable IAM Access Analyzer in each Region where
you're using supported AWS resources.

IAM Access Analyzer analyzes the following resource types:

 * Amazon Simple Storage Service buckets

 * AWS Identity and Access Management roles

 * AWS Key Management Service keys

 * AWS Lambda functions and layers

 * Amazon Simple Queue Service queues

 * AWS Secrets Manager secrets

 * Amazon Simple Notification Service topics

 * Amazon Elastic Block Store volume snapshots

 * Amazon Relational Database Service DB snapshots

 * Amazon Relational Database Service DB cluster snapshots

 * Amazon Elastic Container Registry repositories

 * Amazon Elastic File System file systems


VALIDATING POLICIES

You can validate your policies using IAM Access Analyzer policy checks. You can
create or edit a policy using the AWS CLI, AWS API, or JSON policy editor in the
IAM console. IAM Access Analyzer validates your policy against IAM policy
grammar and best practices. You can view policy validation check findings that
include security warnings, errors, general warnings, and suggestions for your
policy. These findings provide actionable recommendations that help you author
policies that are functional and conform to security best practices. To learn
more about validating policies using IAM Access Analyzer, see IAM Access
Analyzer policy validation.


GENERATING POLICIES

IAM Access Analyzer analyzes your AWS CloudTrail logs to identify actions and
services that have been used by an IAM entity (user or role) within your
specified date range. It then generates an IAM policy that is based on that
access activity. You can use the generated policy to refine an entity's
permissions by attaching it to an IAM user or role. To learn more about
generating policies using IAM Access Analyzer, see IAM Access Analyzer policy
generation.

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Document Conventions
AWS managed policies
Findings for public and cross-account access
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 * Identifying resources shared with an external entity
 * Validating policies
 * Generating policies





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