[SOLVED] Flask web app not responding to external requests on EC2

Issue

I've got a very simple Flask application that I'm hosting on an Amazon EC2 node and for whatever reason I can't see it externally. The flask app is here

from flask import Flask

app = Flask(__name__)
app.config['DEBUG'] = False

@app.route('/')
def hello_world():
    return 'Hello World!'

@app.route('/p1')
def p1():
    return "P1!!!"

if __name__ == '__main__':
    app.run(host='0.0.0.0')

When I run the script it looks like the server is running fine, so in my browser (on a different computer) I put the following :5000 (the IP address I pull off of AWS). What's interesting is that it just seems to hang, and eventually produces an error. My guess is that I'm missing some configuration in AWS but I don't know what it is. Any help would be greatly appreciated

EDIT I tried deploying the app on my local machine. And when I try to access it from the browser using localhost:5000, it works. When I replace localhost with my IP address, it fails

Solution

Was able to ultimately answer my own question, both really

The problem I was having on AWS was that my inbound for that EC2 was not allowing access through the ports that I would need.

When I tried running it on my local machine at work, firewall settings change the address of localhost (and my IP) so that's why I couldn't access it outside of using localhost:5000

Answered By - sedavidw

Answer Checked By - Mildred Charles (WPSolving Admin)