#iptables -P FORWARD DROP
#iptables -F FORWARD
sysctl net.ipv4.ip_forward=1
iptables -A FORWARD -j ACCEPT
iptables -t nat -A POSTROUTING -o vSwitch0 -j SNAT --to xxx.xxx.xx.xxx
iptables -t nat -A POSTROUTING -o vSwitch1 -j SNAT --to 192.168.1.2
modprobe ip_nat_ftp
modprobe ip_conntrack_ftp
iptables -t nat -A PREROUTING -p tcp -d xxx.xxx.xx.xxx--dport 2033 -j DNAT --to-destination 192.168.1.13:2033
iptables -t nat -A PREROUTING -p udp -d xxx.xxx.xx.xxx--dport 2033 -j DNAT --to-destination 192.168.1.13:2033