Snapshot should disable public network access

High Azure General snapshot-no-public-access

Applies to

Microsoft.Compute/snapshots

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: Snapshot > Networking > set Network access policy to DenyAll. See: https://learn.microsoft.com/en-us/azure/virtual-machines/disks-enable-private-links-for-import-export-portal

Careful: Disabling public access blocks all non-private-endpoint traffic for snapshot export. Ensure private endpoints are configured first

CLI

az snapshot update --ids "{id}" --public-network-access Disabled

Terraform

resource "azurerm_snapshot" "{name}" {
  name                    = "{name}"
  resource_group_name     = "{rg}"
  location                = var.location
  create_option           = "Copy"
  source_uri              = "<source-disk-id>"
  network_access_policy   = "DenyAll"
  public_network_access   = "Disabled"
}

Compliance frameworks

Cloud Security: Azure Foundations

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