Remote-access Guide

flask remote access

by Miss Alysa Runolfsdottir Published 2 years ago Updated 2 years ago
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How can I access my Flask app from another network?

Today, there are two ways to expose your flask application to the internet.Deploy the web application in your office server which has a public IP address and domain name.Deploy the web application in the cloud such as AWS, MS Azure, GCP or web hosting companies like GoDaddy, SiteGround, A2Hosting etc.

How do I connect to a remote server with a Flask?

If you want the Flask app to run on a remote system, you must install it and run it on that system. If you are the system administrator, that means copying the application (and its dependencies) over and setting up a WSGI web server to run it on the server.

How do I access my Flask server?

If you use the flask executable to start your server, use flask run --host=0.0. 0.0 to change the default from 127.0. 0.1 and open it up to non-local connections. If you run the server you will notice that the server is only accessible from your own computer, not from any other in the network.

What is the default IP address for Flask?

127.0.0.1Parameters of the flask run command. --host – the IP address of the web server to run your Flask application on. The default value is '127.0. 0.1'.

Why Flask is not used for production?

Although Flask has a built-in web server, as we all know, it's not suitable for production and needs to be put behind a real web server able to communicate with Flask through a WSGI protocol. A common choice for that is Gunicorn—a Python WSGI HTTP server.

How do I run a Flask from a different IP?

Another thing you can do is use the flask executable to start your server, you can use flask run --host=0.0. 0.0 to change the default IP which is 127.0. 0.1 and open it up to non local connections. So If we summarize then the outcome is you should use the app.

How do I host my flask app?

Step 1: Creating a Python Virtual Environment for your Project. Before you get started, you need to set up your Python developer environment. ... Step 2: Creating a Minimal Flask App. ... Step 3: Setting Up Your Gunicorn Configuration. ... Step 4: Pushing the Site to GitHub. ... Step 5: Deploying to DigitalOcean with App Platform.

How do I host a flask app for free?

How can I deploy my flask web app on vercel?Download vercel cli using npm i -g vercel . Refer here.add requirements. txt file with all the python packages mentioned you've used.add vercel.json file and add the below content(here I am using app.py as my main file)

How do I run a flask on local host?

To install flask, simply type in pip install flask in your computer terminal/command line. Once you have made sure flask is installed, simply run the hello.py script. Once you run the script, the website should now be up and running on your local machine, and it can be viewed by visiting localhost:5000 in your browser.

How do I find my remote address in flask?

Use flask. request. remote_addr to get an IP address using Flaskapp = flask. Flask(__name__)@app. route("/")def index():ip_address = flask. request. remote_addr.return "Requester IP: " + ip_address.app. run(host="0.0.0.0", port=8080)

How do I run a flask on another port?

1:092:31Changing the Port When Running a Flask App Through Command LineYouTubeStart of suggested clipEnd of suggested clipAnd there are a couple ways you can do it you can edit the configuration variables so flask run portMoreAnd there are a couple ways you can do it you can edit the configuration variables so flask run port is the name of it. And then you set it to something so in this case I'll set it to 8000.

How do I find the IP address of my flask?

To get IP address of visitors using Flask for Python, we can use the request. remote_addr property. to get the current client's IP address with request. remote_addr .

How do I host a flask app on my server?

How to Serve a Flask AppStep 1: Prerequisites. Complete the following prerequisites before you get started with your Flask app. ... Step 2: Create the Flask application. ... Step 3: Build your container image. ... Step 4: Create a container service. ... Step 5: Deploy the container. ... Step 6: Cleanup.

How do you use a production flask?

Building and Deploying Production-ready Flask AppProject Structure. Let's start with initializing a project. ... Initializing Flask App. It just takes two lines to initialize a flask app. ... Introduce Blueprints. ... Implement Blueprints. ... Unit Tests. ... Logging. ... WSGI. ... Testing.More items...•

How do you flask an app?

How to set up your Python and Flask development environmentChoose a Python version. ... Install a text editor or IDE. ... Start a new project with virtualenv. ... Install Flask and the Twilio Python SDK. ... Create a simple Flask application. ... The Django Alternative. ... Install ngrok.

How do I deploy flask app in Linux?

12:1822:12How to Deploy a Flask App to a Linux Server - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you have to make sure that the starting point of your application is from an it PI. SoMoreAnd you have to make sure that the starting point of your application is from an it PI. So underscore your net underscore underscore PI. That needs to be the file that's gonna start your application.

Use cases of this "weirdo"

A handy (web) console to manage a certain intermediate host which has its bunch ports proxying the targets that really matter

Known issue (s)

This can also be served by uwsgi --socket :5000 --gevent 1000 --master --wsgi-file=./app.py --callable app as a more friendly production deployment, but the telnet part won't survive by unknown cause while the ssh works quite well.

Why is my Python server only accessible from my computer?

This is the default because in debugging mode a user of the application can execute arbitrary Python code on your computer.

Can you use Flask in production?

While this is possible, you should not use the Flask dev server in production. The Flask dev server is not designed to be particularly secure, stable, or efficient. See the docs on deploying for correct solutions. The --host option to flask run, or the host parameter to app.run (), controls what address the development server listens to.

Running Flask with an SSH Remote Python Interpreter

One common cause of bugs in many applications is that development and production environments differ. Although in most cases it’s not possible to provide an exact copy of the production environment for development, pursuing dev-prod parity is a worthwhile cause.

Our Application

I’m lazy, so we’ll use a web-app that I made last year as an example. The application is a very simple old-school guestbook. In last year’s blog post, I used Docker Compose to describe an environment with both the Python service and a PostgreSQL database.

Configuring Our Box

Docker Compose is very handy, as it allows us to specify and configure services in a very concise way. If we want to make this work on a general Linux machine, we’ll need to handle this configuration ourselves. So let’s start with installing PostgreSQL.

The Finish Line

After setting up the database, we should be able to start Flask again with the debug configuration, and check out our cool guestbook:

Large enterprise level open source flask project?

I am looking for a large enterprise level open source flask project because I would like to see how professionals organize their models, templates, view functions etc.

Need to deploy my flask project

I've recently finished creating a flask app with SQLite database and I've been trying to deploy it so it can appear on google and be easily accessible to everyone.

A Fantasy Premier League stats site

I'm proud to share my first large-scale Flask project: The FPLephant. It's a stats website for fantasy soccer (very niche), but it was an awesome way to build up the Python I've been learning for a while.

UWSGI Threading not running on port 80

I have tried to enable threading to run the flask web server and a discord bot. The code runs fine in vscode on 127.0.0.1:5000 but when I git pull into a docker image it still runs on port 5000 and not on port 80.

Questions regarding how to make changes to a Flask website running on Nginx, Gunicorn and Ubuntu

I have deployed my first website and I am not sure how I should keep it up to date with the changes in the GitHub repository.

Hacking Flask Applications

One of the very first web applications I made was developed using Flask. It was the best choice since it has a lot of documentation online for a beginner like me, and has tons of extensions to support the implementation of additional features.

What is Flask?

Flask is a micro web framework written in Python. It has become one of the most popular Python web application frameworks.

The Werkzeug Debugger

Werkzeug provides an interactive debugger renders tracebacks and allows for the execution of Python code on the local machine.

Werkzeug Remote Code Execution Vulnerability

Upon entering the debugger documentation page you will see this warning:

How To Exploit The Vulnerability

So how do you find out if an application is vulnerable to this issue? And once the vulnerability is confirmed, how do you exploit it?

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What Makes This Unique

  1. Created for remote access and remote-only, instead of wandering on the local
  2. Telnet and SSH client only (for now), can be added further (but still well controlled)
  3. Made to access certain/specific target only (setup in config), away from being sidekick of villains
  4. Multiple users supported by (server-side) session based key info storage
See more on github.com

Use Cases of This "Weirdo"

  • A handy (web) console to manage a certain intermediate host which has its bunch ports proxying the targets that really matter 1. Like all web terminals, the only thing needed is a web browser (that has support to websocket), no client (such as putty) installation needed 2. Target of the web console can reach should be limited to the designated (things like a gateway) only 3. Use cases …
See more on github.com

Meanings

  • And beside what's mentioned in pyxterm.js- 1. learn to import server-side session(by flask-session) to serve multiple users 2. Use the default rooms of socketioto split the backends for different visitors
See more on github.com

Deployment

  • Clone this repository, get into the folder, then run: Now copy the file config_sample.py to config.py, then edit the domainto be your remote target, either ip addr or domain name should work. Make sure you have the telnet and/or ssh client binary installed on the server, with absolute paths here in the config.For example, if the server OS is macOS, and telnet was installed throug…
See more on github.com

Known Issue

  1. This can also be served by uwsgi --socket :5000 --gevent 1000 --master --wsgi-file=./app.py --callable appas a more friendly production deployment, but the telnet part won't survive by unknown caus...
  2. Don't even consider to run the server with more than 1 worker, no matter through uwsgi or gunicorn, unless consideration of phasing in a message queue. Talking about this here is bey…
  1. This can also be served by uwsgi --socket :5000 --gevent 1000 --master --wsgi-file=./app.py --callable appas a more friendly production deployment, but the telnet part won't survive by unknown caus...
  2. Don't even consider to run the server with more than 1 worker, no matter through uwsgi or gunicorn, unless consideration of phasing in a message queue. Talking about this here is beyond the scope,...

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