Tabla Post-Pre-Routing


      _____                                _____
     /     \                              /     PREROUTING -->[Decisión de   ]------->POSTROUTING->
     \D-NAT/     [Encaminamiento]         \S-NAT/
                     |                       ^
                     |                     __|__
                     |                    /     |                   | OUTPUT|
                     |                    \D-NAT/
                     |                       ^
                     |                       |
                     ---> Proceso Local ------