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

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

# App Service authentication disabled

{% 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:** `c7fc1481-2899-4490-bbd8-544a3a61a2f3`

**Cloud Provider:** Azure

**Platform:** Terraform

**Severity:** Medium

**Category:** Access Control

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

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

### Description{% #description %}

Azure App Service authentication settings should be enabled to ensure that access to the application is restricted to authenticated users. Without enabling the `auth_settings { enabled = true }` block in Terraform, anyone can anonymously access the app, which exposes it to unauthorized access and potential misuse of sensitive data or resources. Properly configuring authentication securely helps mitigate risks from attacks such as data exfiltration, account takeover, or service abuse.

```
auth_settings = {
  enabled = true
}
```

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

```terraform
resource "azurerm_app_service" "negative1" {
  name                = "example-app-service"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  app_service_plan_id = azurerm_app_service_plan.example.id

  site_config {
    dotnet_framework_version = "v4.0"
    scm_type                 = "LocalGit"
  }

  app_settings = {
    "SOME_KEY" = "some-value"
  }

  auth_settings = {
    enabled = true
  }

  connection_string {
    name  = "Database"
    type  = "SQLServer"
    value = "Server=some-server.mydomain.com;Integrated Security=SSPI"
  }
}
```

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

```terraform
resource "azurerm_app_service" "positive2" {
  name                = "example-app-service"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  app_service_plan_id = azurerm_app_service_plan.example.id

  site_config {
    dotnet_framework_version = "v4.0"
    scm_type                 = "LocalGit"
  }

  app_settings = {
    "SOME_KEY" = "some-value"
  }

  auth_settings = {
    enabled = false
  }

  connection_string {
    name  = "Database"
    type  = "SQLServer"
    value = "Server=some-server.mydomain.com;Integrated Security=SSPI"
  }
}
```

```terraform
resource "azurerm_app_service" "positive1" {
  name                = "example-app-service"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  app_service_plan_id = azurerm_app_service_plan.example.id

  site_config {
    dotnet_framework_version = "v4.0"
    scm_type                 = "LocalGit"
  }

  app_settings = {
    "SOME_KEY" = "some-value"
  }

  connection_string {
    name  = "Database"
    type  = "SQLServer"
    value = "Server=some-server.mydomain.com;Integrated Security=SSPI"
  }
}
```