Posture check: Azure Network Security Group allows all traffic on FTP (TCP Port 21)
Query: ```config from cloud.resource where cloud.type = 'azure' AND api.name= 'azure-network-nsg-list' AND json.rule = securityRules[?any(access equals Allow and direction equals Inbound and (sourceAddressPrefix equals Internet or sourceAddressPrefix equals * or sourceAddressPrefix equals 0.0.0.0/0 or sourceAddressPrefix equals ::/0) and (protocol equals Tcp or protocol equals *) and (destinationPortRange contains _Port.inRange(21,21) or destinationPortRanges[*] contains _Port.inRange(21,21) ))] exists```