How To
Best AWS Certification Books for 2026
AWS certifications carry real weight on a resume. Hiring managers use them as a shortcut to gauge whether…
Category
Security
How To
Best CompTIA Security+ (SY0-701) Books for 2026
CompTIA Security+ (SY0-701) is the entry-level security certification that most IT departments recognize. The exam was overhauled with…
Cheat Sheets
SSH Commands Cheat Sheet for Linux SysAdmins
A quick reference of OpenSSH commands and options for daily Linux and Unix system administration. Covers connections, key…
FreeBSD
FreeBSD Jails with VNET Networking on FreeBSD 15
FreeBSD jails have been the standard for OS-level isolation since FreeBSD 4.0, years before Linux containers existed. With…
FreeBSD
FreeBSD 15.0 New Features: pkgbase, Post-Quantum Crypto, ZFS 2.4
FreeBSD 15.0 landed on December 2, 2025, and it changes how you manage the entire operating system. The…
How To
Setup Let’s Encrypt SSL Certificates with Certbot on Linux
Every web service you expose to the internet needs a valid SSL/TLS certificate. Let’s Encrypt makes this free…
How To
Install and Use WPScan WordPress Security Scanner
WPScan is a security scanner designed specifically for WordPress sites. It checks for known vulnerabilities in WordPress core,…
Arch Linux
Install Arch Linux with LUKS Full Disk Encryption
LUKS (Linux Unified Key Setup) encrypts your entire disk at the block level, protecting all data at rest.…
How To
UFW Firewall Commands with Examples on Ubuntu 24.04 / 22.04
UFW (Uncomplicated Firewall) is the default firewall management tool on Ubuntu and other Debian-based distributions. It provides a…
Security
Install and Configure Firewalld on Ubuntu 24.04 / 22.04
Firewalld is a dynamic firewall manager for Linux that supports IPv4, IPv6, Ethernet bridges, and IPSet configurations. It…
Containers
Install Frigate NVR with Docker on Ubuntu 24.04 / Debian 13
Frigate is an open-source network video recorder (NVR) with real-time AI object detection built in. It runs person,…
Linux Tutorials
Setup Fingerprint Reader Authentication with PAM on Linux
Fingerprint reader authentication adds a layer of biometric security to Linux systems, letting you authenticate with a finger…