Programster's Blog

Tutorials focusing on Linux, programming, and open-source

security SSH passwords

Configure SSH To Allow Logging In Via Password For Certain Users or Groups

Learn how to allow specific users to authenticate using a password, whilst everyone else has to authenticate via a key file instead.

SSH security Docker

Use Remote Docker Host With SSH

This tutorial will show you how you can configure Docker to safely use a remote Docker host, by simply configuring SSH details, rather than having to set up any kind of fancy TLS security.

security UFW firewall

UFW Cheatsheet

A cheatsheet for using the uncomplicated firewall (UFW).

security github DevOps

Create A GitHub Deploy Key

Create a GitHub deploy key in order to give your pipelines restricted access to just one project.

security DevOps Jenkins

Jenkins - Storing Passwords, Secrets, and Credentials

Learn how to store secrets / credentials in Jenkins.

security PHP QR-code

Setting Up Google 2FA on PHP

Get started with using 2FA in PHP with Google Authenticator.

security AWS IAM

AWS - Create Specific Keys For Security Access

See just how easy it is to create keys for your services that have limited access rights. This could save your bacon.

SSH security CentOS-7

CentOS 7 - Disable Root Login

SSH security SSL openssl rsa

Managing Encryption Keys (ssh/ssl)

SSH security authenticaiton two-factor-authentication

Ubuntu - SSH Two Factor Authentication