DDoS Protection Plan should be associated with virtual networks

High Azure General ddosprotectionplans-ddos-protection

Applies to

Microsoft.Network/ddosProtectionPlans

What CGPulse checks

A resource passes this rule when virtualNetworksCount must be greater than 0. Anything else is reported as a finding with the evaluated property value attached as evidence.

How to fix it

Enable DDoS protection to defend VNets against volumetric attacks. In Azure Portal: DDoS Protection Plan > associate with virtual networks. See: https://learn.microsoft.com/en-us/azure/ddos-protection/manage-ddos-protection

CLI

az network vnet update --ids "/subscriptions/{sub}/resourceGroups/{rg}/providers/Microsoft.Network/virtualNetworks/{vnet}" --ddos-protection-plan "{id}"

Bicep

resource vnet 'Microsoft.Network/virtualNetworks@2023-09-01' = {
  name: '{vnetName}'
  location: location
  properties: {
    ddosProtectionPlan: {
      id: '{id}'
    }
    enableDdosProtection: true
    addressSpace: {
      addressPrefixes: ['10.0.0.0/16']
    }
  }
}

Terraform

resource "azurerm_network_ddos_protection_plan" "{name}" {
  name                = "{name}"
  resource_group_name = "{rg}"
  location            = var.location
}
resource "azurerm_virtual_network" "{name}" {
  name                = "{vnetName}"
  resource_group_name = "{rg}"
  location            = var.location
  address_space       = ["10.0.0.0/16"]
  ddos_protection_plan {
    id     = azurerm_network_ddos_protection_plan.{name}.id
    enable = true
  }
}

Compliance frameworks

Cloud Security: Azure Foundations

Is your environment compliant with this rule?

CGPulse checks it — and 621 others — against your Azure and AWS accounts with read-only access.

Run a free scan