Richard Applegate Category: Network and IT System
How to Fix VMware Module Errors When Secure Boot Is Enabled on Linux
If you've ever tried to start VMware on a Linux machine and hit an error about vmmon or vmnet modules failing to load, there's…
Move Docker to Separate Drive on Ubuntu
Every Linux server failure I’ve witnessed from disk issues starts the same way: the root filesystem slowly fills up. No alarms. No drama. Just…
ERPNext v15 Slack Notifications for Stock Movements
If you are running ERPNext v15 and want real-time Slack notifications whenever stock movements occur, this step-by-step guide shows you exactly how to set…
UFW Firewall: Allow TCP Port 8123 from Specific IP
Firewalls are a foundational component of any secure Linux server environment. On Ubuntu and other Debian-based distributions, UFW (Uncomplicated Firewall) provides a straightforward yet…
Secure WireGuard Homelab: Complete Setup Guide
This page documents the complete, final configuration of a secure homelab environment built around WireGuard, Raspberry Pis, UFW, AdGuard Home, Fail2Ban, n8n workflow automation,…
WireGuard Split-Tunnel VPN: Secure Setup Guide
This document is the final, stable Standard Operating Procedure (SOP) for a small production homelab built on WireGuard, AdGuard Home, Docker monitoring, and UFW.…
N8N Production Server Monitoring & Security Automation
Production Monitoring & Security Automation Runbook