Managing user accounts is a fundamental Linux administration task. Ubuntu 26.04 LTS provides the adduser, usermod, and deluser commands to create, modify, and remove accounts safely. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server or desktop A user with sudo privileges Basic familiarity with the Linux terminal Step 1 – Add […]
SSH key authentication is far more secure than password-based login. A cryptographic key pair — private key on your machine, public key on the server — lets you connect without a password and protects against brute-force attacks. This guide covers generating a key pair and deploying it on Ubuntu 26.04 LTS. Tested and valid on: […]
Fail2Ban monitors log files and automatically bans IP addresses that show signs of brute-force activity — too many failed login attempts, repeated bad requests, or other malicious patterns. This guide installs and configures Fail2Ban on Ubuntu 26.04 LTS to protect SSH and other services. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]
Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure pluggable authentication modules on ibm aix 7.1 on […]
How to Configure PowerShell DSC for Configuration Management on Windows Server 2012 R2 PowerShell Desired State Configuration (DSC) is Microsoft’s built-in configuration management framework that allows you to define the intended state of a Windows system declaratively and have the system automatically enforce that state. On Windows Server 2012 R2, DSC is powered by the […]
How to Install Terraform on Windows Server 2012 R2 Terraform is HashiCorp’s infrastructure-as-code tool that enables you to define, provision, and manage cloud and on-premises infrastructure using declarative configuration files. On Windows Server 2012 R2, Terraform runs as a standalone binary with no installation wizard or service required — you simply extract the executable and […]
How to Install Ansible and Manage Windows Server 2012 R2 with Ansible Ansible is an agentless configuration management and automation platform that manages Windows hosts via WinRM (Windows Remote Management) rather than SSH. This makes it an excellent choice for automating Windows Server 2012 R2 deployments, as no software needs to be installed on the […]
How to Configure a GitHub Actions Self-Hosted Runner on Windows Server 2012 R2 GitHub Actions self-hosted runners allow you to execute CI/CD workflows on your own infrastructure rather than GitHub-hosted virtual machines. This is essential when your build process requires access to internal network resources, licensed software, hardware dongles, or a specific Windows Server configuration […]
How to Install Jenkins on Windows Server 2012 R2 Jenkins is one of the most widely adopted open-source automation servers in the industry, enabling organizations to build, test, and deploy software with repeatable, auditable pipelines. On Windows Server 2012 R2, Jenkins runs as a Windows service on top of the Java Runtime Environment, integrating naturally […]
How to Configure Remote Desktop Gateway on Windows Server 2012 R2 RD Gateway enables Remote Desktop connections from the internet to internal RDS servers or individual Windows computers without requiring a VPN. It wraps RDP traffic in HTTPS (SSL/TLS on port 443), allowing connections through corporate firewalls and NAT devices that typically block port 3389. […]
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