WireGuard is a modern, fast, and secure VPN protocol built into the Linux kernel. It is simpler to configure than OpenVPN and IPsec while offering superior performance. This guide sets up a WireGuard VPN server on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server with a public IP […]
OpenSSL is a powerful toolkit for SSL/TLS cryptography. This guide covers generating self-signed certificates, Certificate Signing Requests (CSRs), and a private Certificate Authority (CA) using OpenSSL on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server OpenSSL installed (pre-installed on Ubuntu 24.04) A user with sudo privileges Step 1 […]
DKIM, SPF, and DMARC are email authentication standards that prevent spoofing and improve email deliverability. This guide configures all three on a Postfix server on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Postfix installed and running Access to your domain DNS records A user with sudo privileges […]
Login banners warn users of authorised use policies and can have legal implications for intruders. This guide configures pre-login SSH banners, post-login MOTD messages, and terminal login warnings on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Step 1 – Create an SSH […]
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 […]
Redis is an in-memory key-value store known for its flexibility, performance, and wide language support. This tutorial demonstrates how to install, configure, and secure Redis on an Ubuntu 22.04 server.
Fail2Ban monitors log files and automatically bans IP addresses showing brute-force patterns. This guide installs and configures Fail2Ban on Ubuntu 24.04 LTS to protect SSH and other services. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges UFW or iptables installed and active Step 1 – Install […]
ClamAV is a free open-source antivirus engine for detecting trojans, viruses, malware, and other malicious threats. While Linux servers are less susceptible to viruses than Windows, ClamAV is essential for scanning files from mixed environments. This guide installs ClamAV on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server […]
Learn how to secure your Nginx server on Ubuntu with a free Let’s Encrypt SSL certificate. Step-by-step instructions for HTTPS setup and auto-renewal.
In this guide, you will learn how to set up a self-signed SSL/TLS certificate for use with an Nginx web server on an Ubuntu server.
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