turbot/steampipe-mod-terraform-azure-compliance

Control: IP Forwarding on your virtual machine should be disabled

Description

Enabling IP forwarding on a virtual machine's NIC allows the machine to receive traffic addressed to other destinations. IP forwarding is rarely required (e.g., when using the VM as a network virtual appliance), and therefore, this should be reviewed by the network security team.

Usage

Run the control in your terminal:

powerpipe control run terraform_azure_compliance.control.network_interface_ip_forwarding_disabled

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe control run terraform_azure_compliance.control.network_interface_ip_forwarding_disabled --share

SQL

This control uses a named query:

select
address as resource,
case
when (attributes_std ->> 'enable_ip_forwarding')::boolean then 'alarm'
else 'ok'
end as status,
split_part(address, '.', 2) || case
when (attributes_std ->> 'enable_ip_forwarding')::boolean then ' network interface enabled with IP forwarding'
else ' network interface disabled with IP forwarding'
end || '.' reason
, path || ':' || start_line
from
terraform_resource
where
type = 'azurerm_network_interface'

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