IoT Hub should disable public network access

High Azure General iothub-no-public-access

Applies to

Microsoft.Devices/IotHubs

What CGPulse checks

A resource passes this rule when publicNetworkAccess must equal Disabled. Anything else is reported as a finding with the evaluated property value attached as evidence.

How to fix it

Disable public network access to prevent unauthorized internet exposure. In Azure Portal: IoT Hub > Networking > set Public network access to Disabled. See: https://learn.microsoft.com/en-us/azure/iot-hub/iot-hub-public-network-access

Careful: Disabling public access blocks all connections not routed through private endpoints

CLI

az iot hub update --ids "{id}" --set properties.publicNetworkAccess=Disabled

Terraform

resource "azurerm_iothub" "{name}" {
  name                          = "{name}"
  resource_group_name           = "{rg}"
  location                      = var.location
  public_network_access_enabled = false
  sku {
    name     = "S1"
    capacity = 1
  }
}

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