[root@lacl-001 ~]$cat /root/ipt/gateway
service iptables stop
iptables -t nat -A POSTROUTING -s 192.168.103.0/24 -o eth0 -j SNAT --to 202.115.169.56
iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
#4444/445/69/135/139
iptables -A FORWARD -p tcp --dport 4444 -j DROP
iptables -A FORWARD -p udp --dport 4444 -j DROP
iptables -A FORWARD -p tcp --dport 445 -j DROP
iptables -A FORWARD -p udp --dport 445 -j DROP
iptables -A FORWARD -p tcp --dport 69 -j DROP
iptables -A FORWARD -p udp --dport 69 -j DROP
iptables -A FORWARD -p tcp --dport 135 -j DROP
iptables -A FORWARD -p udp --dport 135 -j DROP
iptables -A FORWARD -p tcp --dport 139 -j DROP
iptables -A FORWARD -p udp --dport 139 -j DROP
service iptables status
[root@lacl-001 ~]$