Posture check: Alibaba Cloud Security group allow internet traffic to FTP port (21)
Query: ```config from cloud.resource where cloud.type = 'alibaba_cloud' AND api.name = 'alibaba-cloud-ecs-security-group' AND json.rule = "permissions is not empty and permissions[?(@.policy=='Accept' && @.direction=='ingress' && @.sourceCidrIp=='0.0.0.0/0')].portRange contains _Port.inRange(21,21)"```