networking

1 tutorial series · 5 posts

Tutorial Series

WireGuard VPN

In this compelling guide to VPN networking basics, you'll discover the essential concepts that empower your online privacy. Learn about IP addresses, the crucial differences between public and private networks, subnet masks, and CIDR notation. Embrace the power of effective routing and understand the significance of ports and DNS within VPN configurations. Equip yourself with the knowledge needed to navigate upcoming VPN tutorials seamlessly!

4 Parts · Feb 2026 Start Series →

Posts

ASUS ProArt X870E-Creator WiFi: NIC Investigation and Wake-on-LAN on the Intel I226-V

The ASUS ProArt X870E-Creator WiFi motherboard running Linux has a notable limitation: the onboard Intel I226-V 2.5GbE NIC does not support Wake-on-LAN, despite correct configurations, while the Aquantia AQC113CS 10GbE NIC functions properly. This issue stems from the chipset's architecture, and users cannot update the NIC firmware without restricted access. The Aquantia NIC is recommended for reliable Wake-on-LAN functionality.

May 8, 2026

Fixing Wake-on-LAN on the Linux atlantic Driver

A critical kernel bug in the atlantic driver hindered Wake-on-LAN for AQC-series NICs after power off, despite the functionality being recognized. The resolution, a simple one-line fix, restores the intended behavior, ensuring the driver’s compatibility. Deploying it via DKMS guarantees ongoing functionality with future kernel updates.

May 6, 2026

OPNsense WAN Watchdog with Cooldown, Log Rotation & Cron Integration. PART 1

This guide outlines the steps to create a cron-activated recovery script for OPNsense 25.7.7_4 to address DHCP outages. The script monitors connectivity, logs activity, and reconfigures the WAN interface as needed. It implements cooldown mechanisms to prevent reboot loops and integrates with the system's configuration and scheduling functions.

Nov 14, 2025

OPNsense: Automatic Recovery When WAN Fails

This post addresses the absence of a built-in WAN recovery mechanism in OPNsense 25.7.7_4, which can lead to internet connection loss requiring manual reboot. The author presents a DIY solution: a shell script that pings a reliable host, attempts to renew DHCP leases, and reboots the system if necessary. The script can be scheduled via cron for regular monitoring, enhancing network reliability.

Sep 3, 2025

Running OPNsense on the HP T740 — Fixing GIANT-LOCKED and Power Recovery Issues

The article addresses the "GIANT-LOCKED" boot issue and power recovery problems encountered when using OPNsense on HP T740 thin clients. The root cause lies in the legacy device probing by FreeBSD's firmware, which can lead to system freezes and improper resets following a power cut. Solutions involve modifying the boot loader configuration to disable legacy device probing and manage ACPI settings, ensuring reliable system operation without external peripherals.

Aug 31, 2025