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🌐 Networking & Security VPN setup, packet analysis, mail servers, and security tools
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2026 (3 posts)
Rescuing a Failing Disk with ddrescue
Copy a dying disk while it is still readable: only the areas that hold data, surviving the drive's own collapses, …
Network Troubleshooting: A Layered Diagnostic Method
A machine on the LAN does not answer, or half-answers: work out which layer is broken instead of trying commands at …
SPF, DMARC and DKIM: The Email Security Triad
Understanding how SPF, DMARC, and DKIM work to protect your emails from spam and phishing
2025 (36 posts)
Manzolo PPA (My Own Ubuntu Repository)
Manzolo PPA — My Personal Ubuntu Repository
Install my tools directly with apt!
Secure, GPG-signed repository hosted at …
Build Your Own Ubuntu Repository with Docker
Build Your Own Ubuntu Repository with Docker 📦
Ever wanted to distribute your own software packages just like Ubuntu …
Installing NVIDIA Container Toolkit
A guide to installing the NVIDIA Container Toolkit to enable GPU support for Docker containers
Docker Compose Playground
Docker Playground Manager 🐳
Introducing Docker Playground Manager, a powerful tool for managing Docker development …
APT Package Repository Management Guide
Complete guide to manage APT packages, identify repository sources, and audit installed packages on Debian/Ubuntu …
Encrypted LVM Disk Resize (LUKS + LVM)
Quick guide to resize QEMU disks with LUKS encryption and LVM partitions
QEMU/VirtualBox Disk Resize
Quick guide to resize QEMU/VirtualBox virtual disks and expand partitions
Batch Image Optimization
Quick guide to batch optimize JPEG images for web use, reducing file size while maintaining quality
LUKS Encrypted Container
Quick guide to create and use LUKS encrypted containers for secure file storage on Linux
Windows System Repair and Maintenance
Repair corrupted Windows system files with DISM and SFC - in the order that actually works, and why the popular one …
SD Card Backup and Restore
Quick guide to backup and restore SD cards using dd and gzip compression
Network Traffic Analysis with tcpdump (Debian/Ubuntu)
Network Traffic Analysis with tcpdump (Debian/Ubuntu)
Introduction
tcpdump is a lightweight, command-line packet capture …
Network Traffic Analysis with Wireshark (Debian/Ubuntu)
Network Traffic Analysis with Wireshark (Debian/Ubuntu)
Introduction
Wireshark is a powerful open-source tool for …
APT and DPKG Guide (Debian/Ubuntu)
APT and DPKG Guide (Debian/Ubuntu)
Introduction
apt and dpkg are core tools for package management on Debian and Ubuntu …
OpenVPN Server Installation and Configuration Guide (Debian/Ubuntu)
OpenVPN Server Installation and Configuration Guide (Debian/Ubuntu)
Introduction
Setting up an OpenVPN server allows …
Mail Server Installation and Configuration Guide (Debian/Ubuntu)
Mail Server Installation and Configuration Guide (Debian/Ubuntu)
Introduction
Setting up a complete mail server allows …
RDP Installation and Configuration Guide (Debian/Ubuntu)
RDP Installation and Configuration Guide (Debian/Ubuntu)
Introduction
Remote Desktop Protocol (RDP) enables remote …
LVM RAID Management Guide (Debian/Ubuntu)
LVM RAID Management Guide (Debian/Ubuntu)
Introduction
Logical Volume Management (LVM) is a flexible storage management …
LUKS Disk Encryption Management Guide (Debian/Ubuntu)
LUKS Disk Encryption Management Guide (Debian/Ubuntu)
Introduction
LUKS (Linux Unified Key Setup) is a standard for …
ZFS Pool Management Guide (Debian/Ubuntu)
ZFS Pool Management Guide (Debian/Ubuntu)
Introduction
ZFS (Zettabyte File System) is an advanced filesystem and volume …
GPG Bash Playground
GPG Bash Playground Guide
Introduction
The GPG Bash Playground is an educational Bash script that demonstrates the …
Chroot Guide for Debian/Ubuntu
Chroot Guide for Debian/Ubuntu
Introduction
A chroot (change root) environment allows you to switch the root directory …
Linux Boot Repair (Debian/Ubuntu)
Linux Boot Repair Guide (Debian/Ubuntu)
Introduction
Boot issues in Debian or Ubuntu can prevent your system from …
Windows Boot Repair
Windows Boot Repair Guide
Introduction
Windows boot issues can prevent your system from starting correctly, often due to …
Wordpress backing up (files and database) and dockerizing
WordPress Management Script Usage Guide
Introduction
The wp-management script is a powerful Bash tool designed to …