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Here’s how to configure Azure AD authentication for an Azure Storage account:
Before you begin, ensure the following requirements are met:
Azure offers various predefined roles for controlling access:
Role Name | Description |
---|---|
Storage Blob Data Contributor | Grants read, write, and delete permissions to blob objects and containers. |
Storage Blob Data Reader | Grants read-only permission to blob objects and containers. |
Storage Blob Data Owner | Grants full control over blob objects and containers, including setting access policies. |
Storage Queue Data Contributor | Grants read, write, and delete permissions on queue messages. |
Storage Queue Data Reader | Grants read-only permission to queue messages. |
Shared Access Signatures (SAS) with user delegation are secured with Azure AD credentials and provide a secure way to grant limited access to your storage resources.
Here’s a code snippet demonstrating how to authenticate using Azure AD in a .NET application:
using Azure.Identity;
using Azure.Storage.Blobs;
// Storage account details
var accountName = “yourstorageaccount”;
var containerName = “yourcontainer”;
// Create a BlobServiceClient that will authenticate through Active Directory
var blobServiceClient = new BlobServiceClient(new Uri($”https://{accountName}.blob.core.windows.net/”),
new ClientSecretCredential(tenantId, clientId, clientSecret));
// Get a reference to a container in the storage account
var blobContainerClient = blobServiceClient.GetBlobContainerClient(containerName);
Replace tenantId, clientId, and clientSecret with your Azure AD tenant ID, client ID, and secret.
Azure AD’s access and sign-in logs enable you to monitor and audit access to the storage account. You can access the sign-in logs in the Azure AD section of the Azure portal under “Monitoring.”
With Azure AD authentication set up for your storage account, you can benefit from the integration of identity management and access control for more robust security and easier management of your Azure resources.
Answer: A
Explanation: Azure AD authentication provides an alternative to the Shared Key authorization method and can be used for accessing Blob and Queue services in a storage account.
Answer: B
Explanation: Azure AD must be used to configure Azure AD authentication for accessing Azure Storage accounts.
Answer: B
Explanation: As of the knowledge cutoff date, Azure AD authentication is available for Blob and Queue services, but not for Azure Files and Table services.
Answer: C
Explanation: The Storage Blob Data Contributor role is one of the specific roles for granting access permissions to blob containers and data using Azure AD.
Answer: A
Explanation: Managed identities can be utilized to provide an Azure service with an automatically managed identity in Azure AD, thereby avoiding the need to manage credentials.
Answer: B
Explanation: The Get-AzAccessToken cmdlet can be used to obtain an Azure AD token for authenticating with Azure services.
Answer: A
Explanation: Disabling shared key access and setting the `–azure-active-directory` parameter would ensure that a storage account accepts requests only from Azure AD authenticated users.
Answer: A
Explanation: Both system-assigned and user-assigned managed identities can be used with Azure services such as Azure Storage for Azure AD authentication.
Answer: D
Explanation: Access to a storage account can be granted to an Azure AD user or group by assigning an appropriate role using any of the tools mentioned – the Azure portal, Azure CLI, or Azure PowerShell.
Answer: A
Explanation: Azure AD authorization leverages OAuth 0 access tokens for authentication and authorization to the storage services.
Answer: D
Explanation: Role assignments can be made at both the storage account level and at a more granular level such as the container or queue.
Azure AD authentication for storage accounts allows users and applications to authenticate with Azure Storage using their Azure Active Directory (Azure AD) credentials.
Azure AD authentication provides an alternative to shared access signatures (SAS) and Azure Storage account keys for accessing storage accounts, which provides several benefits such as eliminating the need to manage and rotate storage account keys, improved security, and centralized access control management.
Any application that supports OAuth 2.0 can use Azure AD authentication for storage accounts, including web applications, mobile applications, and desktop applications.
To enable Azure AD authentication for a storage account, you need to create an Azure AD application and grant it permission to access your storage account.
You can configure Azure AD authentication for a storage account by setting the “minimum TLS version” and “secure transfer required” properties to their required values, creating a storage account key, and then configuring the Azure AD application to use the storage account key.
Yes, you can use Azure AD authentication for storage accounts with multiple Azure AD directories by configuring the storage account to allow access from any Azure AD tenant.
Azure AD authentication for storage accounts works with Azure RBAC by allowing you to assign roles to users and groups in Azure AD, which provides fine-grained access control to your storage account.
To revoke access for an Azure AD application to a storage account, you can remove the application’s access to the storage account or delete the application entirely.
There are two methods of authenticating with a storage account using Azure AD interactive authentication, which requires the user to enter their Azure AD credentials, and non-interactive authentication, which uses a client ID and secret to authenticate the application.
Azure AD authentication for storage accounts improves security by eliminating the need to manage and rotate storage account keys, providing centralized access control management, and enabling granular role-based access control.
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