Port Forwarding on a different subnet.

[Karakas]

I have a Isp provided Vodafone router which is connected to my Cisco router (897 VA-VAB). My main PC is connected to the Cisco router and therefore I have internet on the pc. When I try to port forward from my Vodafone router it says that it can't port forward to a different Subnet. Is there a way to fix this without unplugging my RJ45 cable and plugging it into my Vodafone router?

[MHM Cisco World · Accepted solution]

Do port forwarding in both

1- Cisco router' from PC to IP of link connect cisco to Vodafone

2- Vodafone from subnet of link connect cisco to Vodafone to Internet 

MHM

[Karakas]

I misscliked the accept solution button. Can you specify some commands for me to use in order to do that on the cisco router?. It would be helpful thanks.

[MHM Cisco World]

Ip nat inside source static udp/tcp <pc ip> <port> <interface <port>

MHM

[Karakas]

Which interface should I use where you say interface?

[MHM Cisco World]

Router-Interface-Vodafone 

MHM

[Karakas]

Do you mean in the vodafone router or on cisco cli? cause I can't understand.

[MHM Cisco World]

can you draw topology i will write note in your topology 

MHM

[Karakas]

Here is my topology 

 red is the vodafone router, black is the cisco router and green is my pc

[MHM Cisco World]

PC have IP a.a.a.1 

Cisco router interface connect to Vodafone have IP b.b.b.1 

Port forwarding 

Ip nat inside source static tcp/udp <a.a.a.1> <port> <b.b.b.1> <port>

This make cisco router do port forwarding to from a.a.a.1 to b.b.b.1 and then you config Vodafone to do port forwarding again from b.b.b.1 to public IP it get from internet 

MHM