Ensure That Microsoft Defender for DNS Is Set To 'On'

Risk Level: High
Cloud Entity: Defender Plans
CloudGuard Rule ID: D9.AZU.MON.79
Covered by Spectral: No
Category: Security Center

GSL LOGIC

DefenderPlans where name='Dns' should have properties.pricingTier='Standard'

REMEDIATION

From Portal

1. Go to 'Microsoft Defender for Cloud'.
2. Click on 'Environment Settings' blade.
3. Click on the subscription name.
4. Select the Defender plans blade.
5. Select 'On' under Status for DNS.
6. Click Save.

From TF
Set the 'tier' and 'resource_type' arguments under 'azurerm_security_center_subscription_pricing' as below:

resource "azurerm_security_center_subscription_pricing" "example" {
	...
	tier    = "Standard"
	resource_type = "Dns"
	...
}

From Command Line

Use the below command to enable Azure Defender for Dns
Run

az security pricing create -n 'DNS' --tier 'Standard'

References

1. https://learn.microsoft.com/en-us/security/benchmark/azure/baselines/azure-dns-security-baseline
2. https://learn.microsoft.com/en-us/cli/azure/security/pricing?view=azure-cli-latest
3. https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/security_center_subscription_pricing

Defender Plans

The Defender plans of Microsoft Defender for Cloud offer comprehensive defenses for the compute, data, and service layers of your environment

Compliance Frameworks

• Azure CIS Foundations v. 1.5.0
• Azure CIS Foundations v.2.0
• Azure CloudGuard Best Practices
• Azure NIST 800-53 Rev 5
• CloudGuard Azure All Rules Ruleset