Route Table should disable BGP route propagation

Medium Azure General routetables-route-table-disable-bgp

Applies to

Microsoft.Network/routeTables

What CGPulse checks

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

How to fix it

Disable BGP route propagation to ensure traffic follows user-defined routes through security appliances. In Azure Portal: Route Table > Configuration > set Propagate gateway routes to No. See: https://learn.microsoft.com/en-us/azure/virtual-network/manage-route-table

CLI

az network route-table update --ids "{id}" --disable-bgp-route-propagation true

Terraform

resource "azurerm_route_table" "{name}" {
  name                          = "{name}"
  resource_group_name           = "{rg}"
  location                      = var.location
  disable_bgp_route_propagation = true
}

Compliance frameworks

Cloud Security: Azure Foundations

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