iptables nat

Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination
DNAT       udp  --  anywhere             anywhere           udp dpt:34001 to:10.0.0.140:34001
DNAT       tcp  --  anywhere             anywhere           tcp dpt:34001 to:10.0.0.140:34001
DNAT       udp  --  anywhere             anywhere           udp dpt:34000 to:10.0.0.140:34000
DNAT       tcp  --  anywhere             anywhere           tcp dpt:34000 to:10.0.0.140:34000
DNAT       tcp  --  anywhere             anywhere           tcp dpt:telnet to:10.0.0.138:23

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

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination