Port forwarding ESP8266+ArduinoUNO

Projects Networking, Protocols, and Devices
1

Hi everyone,

My final goal is to control my Arduino via Internet.

The first step I accomplished was to control it using the same WiFi that it is connected to. I used AT commands and opened created a server on port 80, so I could sens data from a web browser.

Now I wanted to connect it from everywhere around the world, so I followed this tutorial in port forwarding:

I have a very similar router as the one he uses: HUAWEI Mobile WiFi e5377
It enables virtual server, so I think port forwarding shouldn't be a problem.

I link for example port 333 to the static IP from the ESP8266 in the WiFi, and I create from the ESP a server in port 333. Now I should be able to access it from my public IP adress:port, so I used this web to check if the port was open: Open Port Check Tool - Test Port Forwarding on Your Router

It was not, and I'm stuck in this step, the port always looks to be closed and I'm not really sure about why.

Any ideas, suggestions or critics will be welcome.
Thanks in advance!

2

Hello, i have the same problem with a 4g Huawei modem. After set up the port that i want to use for "port fordwarding" and trying to test if it from a relevant site it says that port is closed.
Also keep in mind that the device that you want to control from this port should be conected to the router at the time you want to test if it is "open".