Ultimate Guide to Self-Hosted Dynamic DNS: Ditch DuckDNS for KarlDNS
Stop dealing with expiring hostnames and insecure API tokens. Learn how to deploy KarlDNS, a secure, account-free, self-hosted DynDNS using FastAPI, SQLite…
Karl.Fail
Blog
Stories from the homelab. Security research, self-hosting, and things learned along the way.
How I Built a Sub-Millisecond Threat Intelligence API for $0
How I built a free, sub-millisecond threat intelligence API using Node-RED to identify malicious IPs and domains. Stop paying vendors for open-source data.
The Great Karlflix Migration: Moving My Media Stack to a Proxmox LXC
Meta Description: Learn how I migrated my bloated Debian VM media stack to a sleek Proxmox LXC, enabling Jellyfin hardware transcoding, Gluetun WireGuard, and SSO.
Claude SysAdmin: An AI Guide for the Exceptionally Lazy
Too lazy for homelab chores? Learn how I used AI tools like Claude as my personal SysAdmin to automate Proxmox updates, fix WordPress, and refactor UniFi firewalls.
I Spent 250€ on AI Pentesting Agents (PentAGI, Strix, Xalgorix)
Curious if autonomous AI pentesting actually works? I spent 200€ on OpenAI and Claude APIs to test PentAGI, Strix, and Xalgorix. Read my real-world…
Monitoring Your Personal Attack Surface with Shodan and n8n
Automate your home network security with n8n and Shodan. Monitor your personal attack surface, scan your DynDNS, and get instant Discord alerts for open ports.
Windows 11 VM Performance: Hardening, Debloating, and Setup Guide
I am currently testing a Windows 11 VM for gaming with GPU passthrough, instead of CachyOS, which I talked about in my previous post. While Linux has made
How I Automated My WoW Nerd Obsession with n8n, Browserless & Python (A Self-Hosting Guide)
In which a grown adult builds an entire self-hosted automation flow just to find out which World of Warcraft specs are popular this week. Priorities?…
Unlocking Full PS5 DualSense Features in Moonlight & Sunshine
There is nothing worse than buying premium hardware and having your software treat it like a generic accessory. I recently picked up a PS5 DualSense…
The 2026 Guide to Linux Cloud Gaming: Proxmox Passthrough with CachyOS & Sunshine
Build the Ultimate Linux Cloud Gaming Server: A step-by-step guide to Proxmox, CachyOS, and AMD RX 7900 XTX passthrough. Fixes for Vulkan, Sunshine, and…
Why I Cancelled ChatGPT Plus: Saving €15/Month with Gemini Advanced
The Switch: Why I Dumped ChatGPT Plus for Gemini For a long time, I was a loyal subscriber to ChatGPT Plus. I happily paid the €23.99/month to…
Forget Google: Build Your Own Search API with SearXNG
Learn how to self-host SearXNG on Proxmox or Docker, use its free search API, and integrate it with Node-RED for OSINT, automation, and…
