Network Interface should not have a public IP address

High Azure General networkinterfaces-network-interface-public-address

Applies to

Microsoft.Network/networkInterfaces

What CGPulse checks

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

How to fix it

Remove the public IP and use Azure Bastion, VPN, or a load balancer for secure access. In Azure Portal: NIC > IP configurations > dissociate public IP. See: https://learn.microsoft.com/en-us/azure/virtual-network/ip-services/remove-public-ip-address-vm

Careful: Removing the public IP disconnects direct internet access. Ensure alternative access methods (Bastion, VPN) are configured first

CLI

az network nic ip-config update --ids "{id}/ipConfigurations/ipconfig1" --remove publicIpAddress

Terraform

resource "azurerm_network_interface" "{name}" {
  name                = "{name}"
  resource_group_name = "{rg}"
  location            = var.location
  ip_configuration {
    name                          = "ipconfig1"
    subnet_id                     = var.subnet_id
    private_ip_address_allocation = "Dynamic"
    # No public_ip_address_id — removes public IP
  }
}

Compliance frameworks

Cloud Security: Azure Foundations

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