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Detecting and Responding to a Hacked Server: A Practical Step-by-Step Guide

By admin February 28, 2026

A step-by-step guide to detecting and responding to a compromised Linux server: from manual command-line inspection and rootkit scanning with rkhunter/chkrootkit, to server isolation and setting up Fail2ban for long-term defense. Includes real commands and hands-on experience.

Ubuntu

Things to Do After Installing Ubuntu Server 22.04 to Avoid 2 AM Disasters

By admin February 28, 2026

A practical checklist of what to do right after installing Ubuntu Server 22.04: secure SSH with key-based authentication, enable UFW firewall, create a swap file, configure timezone, and set up Fail2ban — all distilled from real-world production incident experience.