Android : forwarding of packets to an IP address

Question

I have an Android device. I need to forward packets arriving at the external IP to an internal IP to which Android is connected to.

I would like to know if I can write an App to enable this forwarding.

Also, if this doesn't what is the conventional way this is done. If I should use some scripts where should I place them??

And oh, can I test this using an android emulator??

Thanks.

Answer 1

It is may be possible to emulate a behavior like port forwarding but not routing for non rooted devices.

Also if you want to forward traffic from the mobile.network to the wlan this is so far I know not possible. Android switches the co.netion between mobile.network and wlan. It is not possible to use both. Except some hot spot use cases.