App Service must require FTPS or disable FTP

High Azure General webapp-ftps-only

Applies to

Microsoft.Web/sites

What CGPulse checks

A resource passes this rule when siteConfig.ftpsState must be one of ["FtpsOnly","Disabled"]. Anything else is reported as a finding with the evaluated property value attached as evidence.

How to fix it

Set FTP state to FTPS Only or Disabled to encrypt deployment credentials in transit. In Azure Portal: App Service > Configuration > General settings > FTP state > FTPS Only. See: https://learn.microsoft.com/en-us/azure/app-service/deploy-ftp

CLI

az webapp config set --ids "{id}" --ftps-state FtpsOnly

Terraform

resource "azurerm_linux_web_app" "{name}" {
  name                = "{name}"
  resource_group_name = "{rg}"
  location            = var.location
  service_plan_id     = azurerm_service_plan.{name}.id
  site_config {
    ftps_state = "FtpsOnly"
  }
}

Compliance frameworks

Vendor documentation

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