Salve Ewandrocesar,
tente algo desse tipo:
iptables -A INPUT -m multiport -p tcp --dport 23,20,21,137,138,139,5800,5900 -j ACCEPT
iptables -A INPUT -m multiport -p udp --dport 23,20,21,137,138,139,5800,5900 -j ACCEPT
iptables -A FORWARD -m multiport -p tcp --dport 23,20,21,137,138,139,5800,5900 -j ACCEPT
iptables -A FORWARD -m multiport -p udp --dport 23,20,21,137,138,139,5800,5900 -j ACCEPT
abraços