How to make access to the server from different network devices?

Question

linux

I made an access point according to the article https://www.raspberrypi.org/documentation/configur...

I start the flask server like this The problem is how to give access to the server to those who connected via ETH? (perhaps it still needs to be configured? Then this is another question of mine). Preferably in the same gw.wlan domain. Another problem is that I also have a GSM modem with a dedicated IP and everyone who connects using this ip must go to the same server. How to connect all this?
app.run(host='gw.wlan', port=80)

Answer 1

It is necessary that the server listens for a connection on host 0.0.0.0