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Installing and Configuring Auditd on Ubuntu Server: Tracing User Actions Down to the Kernel Level

By IT From Zero October 23, 2026

Server config tampered with but bash_history is empty? Learn how to configure Auditd on Ubuntu to trace all actions and unmask real user identities at the Linux kernel level.

Ubuntu

Installing ModSecurity v3 and OWASP CRS on Nginx Ubuntu: Building a Production-Ready Web Server WAF

By IT From Zero October 22, 2026

UFW and Fail2ban cannot inspect malicious payloads inside HTTP requests. Here is a step-by-step guide to deploying ModSecurity v3 with OWASP CRS on Nginx in Ubuntu to build a Layer 7 WAF that blocks SQLi, XSS, and RCE.

Ubuntu

How to Create Systemd Services and Systemd Timers on Ubuntu: A Robust Crontab Alternative

By IT From Zero October 22, 2026

Eliminate silent cron job failures by migrating to Systemd Services and Timers on Ubuntu. A step-by-step guide covering self-healing daemon setups to rapid journalctl log debugging.

Ubuntu

Optimizing RAM on Ubuntu with zRAM and Swap for Low-End VPS

By IT From Zero October 18, 2026

Combining high-speed zRAM with a fallback Swap file keeps 1GB–2GB RAM Ubuntu VPS instances stable and crash-free during traffic spikes. Full setup with practical sysctl tuning.

Ubuntu

A Practical Guide to Configuring and Managing AppArmor on Ubuntu: Application Security and Isolation

By IT From Zero October 17, 2026

Comprehensive guide to configuring AppArmor on Ubuntu. Harden Nginx and MySQL, prevent privilege escalation, and isolate services with minimal resource overhead.

Ubuntu

How to Install Docker Engine and Portainer CE on Ubuntu 24.04: Intuitive Container Management via Web UI

By IT From Zero October 16, 2026

Managing containers with raw CLI commands becomes error-prone as systems scale. Installing official Docker Engine with Portainer CE on Ubuntu 24.04 gives you full control over containers, images, and resources via an intuitive web UI, speeding up troubleshooting.

Ubuntu

How to Install and Configure ClamAV on Ubuntu Server: Automated Database Updates and Scheduled Malware Scans

By IT From Zero October 15, 2026

Detailed guide on installing ClamAV on Ubuntu Server, troubleshooting freshclam lock errors, scheduling automated webshell quarantine cron jobs, and optimizing RAM to avoid the OOM Killer.

Ubuntu

How to Install Netdata on Ubuntu: Real-Time System Monitoring with 1-Second Granularity

By IT From Zero October 12, 2026

A step-by-step guide to installing Netdata on Ubuntu Server: monitor CPU, RAM, and disk I/O in real time with 1s latency, secure it via Nginx, and optimize for 1GB VPS.

Ubuntu

Configuring Keepalived on Ubuntu Server: Setting Up Virtual IP and High Availability for Web Server Clusters

By IT From Zero October 11, 2026

Set up High Availability for web server clusters on Ubuntu using Keepalived and Virtual IP (VIP). Eliminate single points of failure with sub-second failover.

Ubuntu

Ubuntu Server Security Auditing with Lynis: Vulnerability Scanning and Practical Hardening

By IT From Zero October 10, 2026

A hands-on guide to installing Lynis on Ubuntu Server, analyzing Hardening Index reports, fixing common security flaws, and automating audits via cron.