server hardening Archives - ITFROMZERO

Hands-on Guide to Linux Server Security Auditing and Hardening with Lynis

By IT From Zero October 29, 2026

A hands-on guide to auditing and hardening Linux server security with Lynis during a midnight incident. Learn installation, custom.prf tuning, fixing 3 common flaws, and setting up automated Telegram alerts.

Security

OpenSCAP Guide for Linux: Automated Scanning and CIS Benchmark Remediation

By IT From Zero October 25, 2026

A comprehensive guide to using OpenSCAP for scanning, generating reports, and automatically remediating Linux configurations against CIS Benchmarks safely without service disruptions.

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.

Security

Securing Sudo with 2FA: The Final Defense Against Root Hijacking

By IT From Zero September 23, 2026

Hackers have your password but not your phone? They'll be stopped in their tracks. A guide to adding a 2FA layer to sudo for ultimate root protection on Linux.

Security

Ransomware Defense on Linux Servers: Proactive Protection, Early Detection, and Data Recovery

By IT From Zero June 17, 2026

A practical guide to Linux server ransomware defense using a defense-in-depth model: SSH hardening, abnormal encryption detection scripts, offline backups with BorgBackup, and an incident response plan for when things go wrong. Aimed at sysadmins and DevOps teams managing production servers.

Security

Mastering Linux PAM: Hardening Passwords and Stopping Brute-force Attacks for Your Server

By IT From Zero June 2, 2026

A guide to upgrading Linux PAM security: Enforcing strong passwords, auto-locking accounts during brute-force attacks, and integrating Multi-Factor Authentication (MFA).

Security

Hardening Linux Server: A Comprehensive Security Checklist for Beginners

By IT From Zero March 20, 2026

In the digital age, Linux server security is vital. This article offers a comprehensive hardening checklist covering essential steps – from system updates, SSH configuration, to firewalls and user management – helping you protect your server from all online threats.