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How to setup 2FA On Linux SSH Login

  This is a simple setup guide to enabling Two Factor Authentication (2FA) on Linux SSH login. I this article I wont go deep into setup and issues that I have faced when implementing this. First thing is first Update your system first. I have used Ubuntu 20.04 and it is always up to date. To enable 2FA you need to install google authenticator modules sudo apt install libpam-google-authenticator Configuration for PAM and SSHD Add the the following line to /etc/pam.d/sshd and After adding this line please restart the sshd services.  auth required pam_google_authenticator.so Go to /etc/ssh/sshd_config and check if the following line exist. Default value will be "no" so change it to "yes" to activate.  ChallengeResponseAuthentication yes Configuration for Authenticator In the terminal run google authenticator command It will ask few things to acknowledge by user. Details you can see from the below video. Once this part is done you are ready to use the 2FA in ubuntu. T...
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3d printing test run (egg)

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Creality Ender-3 bed leveling test run

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3d printing test run (nuts & bolts)

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Python scrip to get public_url from ngrok using API.

First of all what is ngrok?  ngrok exposes local servers behind NATs and firewalls to the public internet over secure tunnels. This can be used by developers who want to run webhooks with https if you dont have a local ssl certificate. For example telegram, Facebook etc use webhook but they only allow ssl. If you want to know more about the ngrok , <---- please click this link for more information. The script after setup the ngrok in the local machine you can run the ngrok command to start the tunnel. in my case i run the ngrok as a service which i have explained in my previous post . After the service is running you can run the python script or your preferred to fetch the public_url from ngrok which can be use to automate the process. For example Telegram Bot with webhook enable only communicates with https urls so from this method you can get the randomly generated https url to use in such scenarios. In case if you have a doubt about usage of ngrok and automation ...
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TIPS#01: How to run a script as a Linux service?

If you want to run your own script for example a shell script, python etc as a Linux service, please follow this guide. I have tested and already using this methods and this works perfectly. In this example i am using an Ubuntu Linux and a shell script (which will run ngrok as service) if you want to know more about ngrok check out there website. STEP#1: Prepare you script file that you want to run as a service. once you are done with editing save and exit STEP#2: Prepare the service Go to "/etc/systemd/system" and create a file with your naming preferences but should end with a ".service" for example my file name was ngrok.service This how the file should look like. ExecStart is where you define the script that you want to run. Once you done editing save the file and follow the commands as follows. To enable the service  systemctl enable ngrok.service Reload the deamon systemctl daemon-reload Test the service if you run ...
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Space is my second hobby

I love exploring and when it comes to technology and bit of rocket science, my interest goes towards SpaceX by Elon musk. There dragon capsule entered earth atmosphere today after successful test mission to ISS. Please enjoy the video.
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Xilinx sends lawyers after an engineer teaching FPGA programming

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