Event Grid topic should disable public network access

High Azure General eventgrid-topic-no-public-access

Applies to

Microsoft.EventGrid/topics

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: Event Grid topic > Networking > set Public network access to Disabled. See: https://learn.microsoft.com/en-us/azure/event-grid/configure-firewall

Careful: Disabling public access blocks all connections not using private endpoints

CLI

az eventgrid topic update --ids "{id}" --public-network-access disabled

Terraform

resource "azurerm_eventgrid_topic" "{name}" {
  name                          = "{name}"
  resource_group_name           = "{rg}"
  location                      = var.location
  public_network_access_enabled = false
}

Compliance frameworks

Cloud Security: Azure Foundations

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