# iptables -t nat -L
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination         
DNAT       tcp  --  anywhere             206.193.194.3       tcp dpt:9800 to:192.168.1.240:9800 
DNAT       tcp  --  anywhere             206.193.194.3       tcp dpt:3389 to:192.168.1.240:3389 
DNAT       tcp  --  anywhere             206.193.194.3       tcp dpt:http to:192.168.1.251:80 
DNAT       tcp  --  anywhere             206.193.194.3       tcp dpt:http to:192.168.1.251:80 
DNAT       tcp  --  anywhere             anywhere            tcp dpt:http to:192.168.1.251:80 

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination         
MASQUERADE  all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination