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Marcus Holtz

Welcome to the Holtzweb blog

This is where my notes and documentation for my projects live.


Create a new password for every service or website you visit

Unique passwords for every service or website

Let’s hash some information into a password The creation of different passwords for every service or website you’re using can become a pain. Using a repeatable method to generate these passwor...

Copy your m3u music playlist to a directory

Create a copy of your playlist's music files to a directory

🎶 Copy music files in a playlist for export 💿 Copy your mp3s, in order, from an m3u playlist into a directory for export. These scripts will: Collect files in your music playlist ...

Web Browser Privacy

Web Browser Privacy Presentation

Web Browser Privacy 😎 This presentation attempts to help take back control for the average user and make the web a little more bearable. 🔗 Links to Presentation 📄 Browser Privacy presentatio...

Setting up OPNsense router as a WireGuard VPN

OPNsense as a WireGuard Server with Site-to-Site VPN

WireGuard on OPNsense There are multiple scenarios where WireGuard can be used, but they all require different configs for that setup. This writeup should enable a single user (Roadwarrior) and f...

Addons for Gecko based browsers

Browser addons, Sidebery, and Floorp settings

Sidebery addon setup inside Floorp browser I use the Sidebery addon with the Floorp browser as my primary means of browsing. You can accomplish the same thing in Firefox with my ffProfile setup sc...

Local mirror of Fedora repos on LAN to save bandwidth

Create local cache of Fedora mirrors, update systems over LAN

Use a cached dnf mirror of Fedora repositories and update systems over the local network to save bandwidth Limited bandwidth, no internet access, just trying to be green? Cache your files! De...

Windows and Linux on dual boot single drive system encrypted with hibernation and working uefi

Dual Boot Linux and Windows with Hibernation and Encryption

Dual boot Windows and Linux both encrypted and capable of hibernation Emergency Fix for Dual Boot Presumably anyone reading this has mostlikly already attempted to dual boot and is here for a fix...

wireless penetration defense nzyme

nzyme - wireless monitoring system

Monitor your Wireless Networks with nzyme Detect and physically locate threats using an easy to build and deploy sensor system. The goal of nzyme is to be accessible to as many people as possi...

Rename Proxmox Nodes without loosing anything

Rename Nodes on a Proxmox Cluster

Rename a Proxmox Node Renaming a Proxmox Node isnt a right click feature In order to rename a node, you basically have to move everything around. This isnt an intended feature, and the official d...

Create a reverse proxy with OPNsense and HAProxy using Let's Encrypt certificates

Setup OPNsense with HAProxy and Let's Encrypt

Setting up HAProxy and Let’s Encrypt on OPNsense HAProxy uses ACME Let’s Encrypt for SSL authentication OPNSense’s HAProxy package can use ACME for certificates. First, we must install those two...