# Source: https://docs.datadoghq.com/security/code_security/iac_security/iac_rules/terraform/azure/azure_active_directory_authentication.md

---
title: Azure Active Directory authentication
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: >-
  Docs > Datadog Security > Code Security > Infrastructure as Code (IaC)
  Security > IaC Security Rules > Azure Active Directory authentication
---

# Azure Active Directory authentication

{% callout %}
# Important note for users on the following Datadog sites: app.ddog-gov.com

{% alert level="danger" %}
This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site). ().
{% /alert %}

{% /callout %}

## Metadata{% #metadata %}

**Id:** `a21c8da9-41bf-40cf-941d-330cf0d11fc7`

**Cloud Provider:** Azure

**Platform:** Terraform

**Severity:** Low

**Category:** Access Control

#### Learn More{% #learn-more %}

- [Provider Reference](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/service_fabric_cluster#tenant_id)

### Description{% #description %}

Azure Service Fabric clusters should be configured to use Azure Active Directory (AAD) for authentication to ensure secure identity management and access control. Omitting the `tenant_id` attribute in the `azure_active_directory` block, as shown below, may result in incomplete AAD integration, potentially allowing unauthorized access to the Service Fabric cluster:

```
azure_active_directory {
  cluster_application_id = "id"
  client_application_id = "id"
}
```

To enforce proper authentication, always specify the `tenant_id` alongside the application IDs:

```
azure_active_directory {
  tenant_id = "id"
  cluster_application_id = "id"
  client_application_id = "id"
}
```

Failure to correctly implement AAD authentication increases the risk of unauthorized cluster access and potential exposure of sensitive workloads and management endpoints.

## Compliant Code Examples{% #compliant-code-examples %}

```terraform
resource "azurerm_service_fabric_cluster" "negative" {
  name                 = "example-servicefabric"
  resource_group_name  = azurerm_resource_group.example.name
  location             = azurerm_resource_group.example.location
  reliability_level    = "Bronze"
  upgrade_mode         = "Manual"
  cluster_code_version = "7.1.456.959"
  vm_image             = "Windows"
  management_endpoint  = "https://example:80"

  node_type {
    name                 = "first"
    instance_count       = 3
    is_primary           = true
    client_endpoint_port = 2020
    http_endpoint_port   = 80
  }

  azure_active_directory {
    tenant_id = "id"
    cluster_application_id = "id"
    client_application_id = "id"
  }
}
```

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```terraform
resource "azurerm_service_fabric_cluster" "positive2" {
  name                 = "example-servicefabric"
  resource_group_name  = azurerm_resource_group.example.name
  location             = azurerm_resource_group.example.location
  reliability_level    = "Bronze"
  upgrade_mode         = "Manual"
  cluster_code_version = "7.1.456.959"
  vm_image             = "Windows"
  management_endpoint  = "https://example:80"

  node_type {
    name                 = "first"
    instance_count       = 3
    is_primary           = true
    client_endpoint_port = 2020
    http_endpoint_port   = 80
  }
}
```

```terraform
resource "azurerm_service_fabric_cluster" "positive1" {
  name                 = "example-servicefabric"
  resource_group_name  = azurerm_resource_group.example.name
  location             = azurerm_resource_group.example.location
  reliability_level    = "Bronze"
  upgrade_mode         = "Manual"
  cluster_code_version = "7.1.456.959"
  vm_image             = "Windows"
  management_endpoint  = "https://example:80"

  node_type {
    name                 = "first"
    instance_count       = 3
    is_primary           = true
    client_endpoint_port = 2020
    http_endpoint_port   = 80
  }

  azure_active_directory {
    cluster_application_id = "id"
    client_application_id = "id"
  }
}
```