linux-security Archives - Page 3 of 7 - ITFROMZERO

Self-Hosting a Postfix & Dovecot Mail Server on Fedora: Maximum Security with SSL and SELinux

By IT From Zero September 6, 2026

Step-by-step guide to installing Postfix and Dovecot on Fedora Server. Detailed instructions on SSL, DNS, and SELinux configuration to keep your mail out of spam.

Security

Systemd Hardening: Securing Services with ProtectSystem, ProtectHome, and PrivateTmp

By IT From Zero September 3, 2026

systemd ships with powerful built-in hardening features — ProtectSystem, ProtectHome, and PrivateTmp — that isolate services at the kernel level with no extra software required. This guide covers practical configuration steps and how to verify effectiveness with systemd-analyze security.

Centos

Installing Linux Malware Detect (LMD) with ClamAV on CentOS Stream 9: Protecting Your Web Server from Malware

By IT From Zero September 1, 2026

A practical guide to installing and configuring Linux Malware Detect (LMD) with ClamAV on CentOS Stream 9 for automated malware detection and quarantine on your web server. Covers installation, automated scan configuration, ClamAV engine integration, real-world testing, and log monitoring.

Ubuntu

Full Disk Encryption with TPM 2.0 on Ubuntu 24.04: Security Without the Hassle

By IT From Zero August 28, 2026

Forget about typing your LUKS password every time you boot. This guide shows you how to leverage TPM 2.0 to automate drive unlocking on Ubuntu 24.04 LTS while maintaining top-tier security.

Security

Runtime Security Monitoring with Tracee: The eBPF ‘Magic Eye’ for Linux Systems

By IT From Zero August 25, 2026

Hackers using fileless malware or container escapes? Don't worry, Tracee with the power of eBPF helps you capture every anomaly on Linux with high performance.

Network

Mastering testssl.sh: The Ultimate SSL/TLS Vulnerability Scanner for Linux

By IT From Zero August 25, 2026

Don't let the 'green padlock' fool you. Learn how to use testssl.sh for comprehensive SSL/TLS vulnerability testing and secure Web Server configuration.

Security

Tlog Guide: The “Security Camera” for Recording Every Linux Terminal Session

By IT From Zero August 20, 2026

Forget .bash_history; tlog is the real security auditing tool for Linux. Record entire Terminal sessions and replay them like video for absolute system control.

Fedora

UKI on Fedora: Manually Packaging the Kernel for Absolute Secure Boot Security

By IT From Zero August 17, 2026

Combine Kernel and Initrd into a single file with Unified Kernel Images (UKI) on Fedora. Optimize Secure Boot and prevent unauthorized system access.

Security

Mastering Cilium Tetragon: Monitoring and Blocking Runtime Attacks with eBPF

By IT From Zero August 9, 2026

A detailed guide on using Cilium Tetragon for monitoring and securing Linux Runtime based on eBPF technology. This article shares quick installation steps, how to write TracingPolicy, and real-world experience to protect servers from attacks.

Security

Setting Up a Tor Onion Service with Nginx: ‘Stealth’ Your Website on Linux

By IT From Zero August 9, 2026

A guide on setting up a Tor Onion Service with Nginx on Linux. Learn how to prevent IP leaks, secure headers, and apply OPSEC principles for a fully anonymous .onion website.