After spinning up a fresh Ubuntu 24.04 LTS server, a few essential steps harden the system, create a non-root administrative account, and prepare it for production workloads. This guide walks through every step from first login to a locked-down, up-to-date server. Tested and valid on: Ubuntu 24.04 LTS Prerequisites A fresh Ubuntu 24.04 LTS server […]
Let’s Encrypt provides free, automatically-renewing SSL certificates. Certbot is the recommended ACME client that handles the entire certificate lifecycle. This guide secures an Nginx-hosted domain on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Nginx installed with a server block for your domain Domain DNS A record pointing […]
The hostname identifies your server on a network and appears in shell prompts, log files, and monitoring dashboards. Ubuntu 26.04 LTS uses hostnamectl — a systemd utility — to view and change the hostname persistently without a reboot. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A user with sudo privileges […]
Managing user accounts is a fundamental Linux administration task. Ubuntu 24.04 LTS provides the adduser, usermod, and deluser commands to create, modify, and remove accounts safely. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server or desktop A user with sudo privileges Basic familiarity with the Linux terminal Step 1 – Add […]
This guide secures an Apache virtual host on Ubuntu 24.04 LTS with a free Let’s Encrypt SSL certificate using Certbot. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Apache installed with a virtual host configured Domain DNS A record pointing to your server Port 80 and 443 open in UFW Step […]
Accurate system time is critical for SSL certificates, logs, cron jobs, and distributed systems. Ubuntu 26.04 LTS uses systemd-timesyncd as the default NTP client. This guide shows you how to configure it, verify time synchronisation, and optionally switch to a different NTP server pool. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]
UFW (Uncomplicated Firewall) is the default firewall management tool on Ubuntu. It wraps iptables with a simplified interface. This guide shows you how to set up and manage UFW on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges SSH access to the server […]
A reverse proxy sits in front of one or more backend application servers, forwarding client requests and returning responses. Nginx makes an excellent reverse proxy — lightweight, fast, and easy to configure. This guide sets up Nginx as a reverse proxy on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 […]
Security vulnerabilities are patched regularly in Ubuntu’s package repositories. unattended-upgrades automatically downloads and installs security updates — and optionally all updates — so your server stays protected without manual intervention. This guide configures it on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A user with sudo privileges […]
SSH key authentication is far more secure than passwords. This guide covers generating an Ed25519 key pair and deploying it on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server with SSH running A user account on the server An SSH client on your local machine (Linux/macOS/Windows) Step 1 […]
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