interfaces {
    ge-0/0/0 {
        unit 0 {
            description UNTRUST;
            family inet {
                address 192.168.137.100/24;
            }
        }
    }
routing-options {
    static {
        route 0.0.0.0/0 next-hop 192.168.137.1;
    }
}
security {
    zones {
        security-zone UNTRUST {
            interfaces {
                ge-0/0/0.0 {
                    host-inbound-traffic {
                        system-services {
                            all;
                        }
                        protocols {
                            all;
                        }
                    }
                }
            }
        }
    }
}