ESP8266 Community Forum

Hi!. I recently bougth the esp and I wanted to make a webserver with arduino. I tried to make the esp accesible from the internet. I used NAT tecnology and port forwarding on my lan and router. The html script works with php, more specifically with the GET request, which sends info to the router (url) so it can forward the info to the esp.
The problem is that it does not work when I run the html script from a pc or device which is not connected to the same network as the esp. Should it be a firewall problem (router)? Anyone can help?

Thanks.