IPTABLES=/usr/sbin/iptables
MODPROBE=/sbin/modprobe

# Loading modules
$MODPROBE ip_conntrack_ftp

# Acces FTP
$IPTABLES -A SERVICES -p tcp --dport 21 -m state --state NEW,ESTABLISHED -j ACCEPT
$IPTABLES -A SERVICES -p tcp --dport 60000:60050 -m state --state ESTABLISHED,RELATED -j ACCEPT

$IPTABLES -A INPUT -j SERVICES