Why is the server not visible on the Internet?

Question

JavaScript

There is a windows server 2012 node on it
There is such a code

var express = require("express");
var app = express();
app.get("/", function(request, response){
    response.send("<h2>Привет Express!</h2>");
});
app.listen(3000);

On the server I turn in the browser http://125.234.41.751:3000/ normally shows.
I'm trying to connect from my computer and it doesn't show anything.
How to make it visible on the Internet by ip?

Answer 1

In the firewall, in all likelihood, open access to port 3000.

Answer 2

Try to add hostname, by default only localhost is listened to.

//app.listen(3000);
app.listen(3000, '0.0.0.0');