tacker/api-ref/source/v1/samples/vnfs/vnfs-update-request.json

{
    "vnf": {
        "attributes": {
            "config": {
                "vdus": {
                    "VDU1": {
                        "config": {
                            "firewall": "package firewall\n\nconfig defaults\n    option syn_flood 1\n    option input ACCEPT\n    option output ACCEPT\n    option forward REJECT\n"
                        }
                    }
                }
            }
        }
    }
}