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martin-ger / esp32_nat_router

A simple NAT Router for the ESP32
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No documentation on port forwarding #15

Open martinville opened 4 years ago

martinville commented 4 years ago

Hi there. This is a very useful tool to have and absolutely love it! I'm surprised how well this works by both your code and the ESP32. Thank you.

I have a pc in my garage which I use for 3d printing/CNC and showing electronic projects on screen ect ect

It want to be able to RDP to it via TCP:3389 but seeing its on a different network 192.168.4.xxx Its not reachable from my WIFI LAN on 192.168.1.xxx. how can port forward from my network 192.168.1.xxx to 192.168.4.2 ?

Apology if this has been covered, I don't see any documentation.

mahaupt commented 3 years ago

You want to add a route / port forward to the nat routing table. I guess you can do this by this function: https://github.com/martin-ger/esp-lwip/blob/cf4da9ef1ac82efb1128aab6d0d5dd51583d56e0/src/include/lwip/lwip_napt.h#L95

tilman commented 3 years ago

@mailmartinviljoen did you get the port forwording to work?

martin-ger commented 3 years ago

Add the call(s) to ip_portmap_add() after esp32_nat_router.c#L367

tilman commented 3 years ago

Thanks a lot! Worked perfectly 👍

geidien commented 12 months ago

The code has since changed, where would you add the ip_portmap_add() calls now?