Ubuntu Archives - ITFROMZERO - Share tobe shared!

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.

Network

How to Install AdGuard Home on Linux: Block Ads Network-Wide and Secure Your Home Network

By IT From Zero October 17, 2026

A complete guide to installing AdGuard Home on Linux. Learn how to resolve systemd-resolved port 53 conflicts, set up encrypted upstream DoH/DoT, and secure your home network.

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

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.

Linux

Configuring DNS-over-TLS with systemd-resolved on Linux: Boost Security for DNS Resolution

By IT From Zero October 8, 2026

A guide to configuring DNS-over-TLS and DNSSEC with systemd-resolved on Linux — encrypting DNS queries to block ISP eavesdropping and man-in-the-middle attacks. Includes a 5-minute quick start, DNSSEC configuration, per-link DNS, and debugging tips from real production experience.

Ubuntu

How to Set Up Two-Factor Authentication (2FA) for SSH on Ubuntu with Google Authenticator

By IT From Zero October 7, 2026

Step-by-step guide to setting up two-factor authentication (2FA) for SSH on Ubuntu with Google Authenticator. Combine SSH keys and TOTP codes for robust server security.

Ubuntu

How to Install and Configure WireGuard VPN Server on Ubuntu: Setting Up a High-Speed Virtual Private Network

By IT From Zero October 7, 2026

A step-by-step guide to building a WireGuard VPN server on Ubuntu. Master Cryptokey Routing, tune MTU to prevent packet bottlenecks, and generate QR codes for quick client setup.

Ubuntu

How to Install and Configure Prometheus with Grafana on Ubuntu Server

By IT From Zero October 4, 2026

A hands-on guide to installing and configuring Prometheus, Node Exporter, and Grafana on Ubuntu Server for accurate, continuous hardware monitoring.