How to use ngrok to proxy internet access to local applications

This DEVscoOPS episode shows how to setup and run ngrok on docker to allow access to web applications that are running on your local machine.
References:
ngrok.com

[@twizzoe]

Thanks for the detailed explanation

[@deepaksahoo4533]

spot on, thanks a lot

[@pablosspot]

You're very welcome :)

[@Lucas-iv6ld]

Thank you!

[@user-op4nv3hu9h]

thanks

[@mohammaddanialhakimzol4864]

Hi, may i know.. how do you bypass the first warning page when accessing the ngrok link?
Isn't there should be a first time access warning page to notify user that you're using ngrok?

[@pablosspot]

Hello. Thanks for your comment. I have not seen any warning when I set this up. I might have to check this again and see if its maybe a version issue. Could you share the message you are getting?

[@sealkeen]

Hey, thank you for the tutorial! Do you know how to suspend the container during a computer reboot without restarting?

[@pablosspot]

Hi Sealkeen,
I am not aware of a way to suspend the container with a computer reboot. But what I do is add a switch on the docker run command with "--restart always" which will start the container when the computer reboots but this will generate a new ngrok endpoint as far as I know.

[@sealkeen]

​@@pablosspot If you hibernate the computer state, the endpoint will not change, but as for the container, I saw a "docker commit" being suggested as a container suspension (I haven't tried it). One possible alternative would probably be running it in a linux virtual machine.

[@AhmedAli-xf5ub]

Can it work with smtp service ?

[@pablosspot]

I have not tried it but i think it does. If you have a local SMTP service that you need to expose to the internet and you know which port it is running on (e.g. generic smtp ports are 25 and 465), you can start ngrok for that port.

[@gokulgoki5680]

If the link works when the app is terminated

[@pablosspot]

The ngrok link will not work if the app is not running.

[@albertocabrera5300]

I got "This site can’t be reached"

[@pablosspot]

Hi Alberto. Are you able to share the command you run to start your ngrok instance?