Networking

Network configuration, IP addressing, VLANs, routing, and network troubleshooting guides. Learn about VPN setup, subnet management, private IP ranges, interface configuration, and network security best practices.

Reserved Network Ranges Beyond 192.168.x.x

June 2, 2026

system-administration

Complete guide to private IP ranges (10.x, 172.16-31.x, 192.168.x) and documentation addresses (203.0.113.x), including VPN collision avoidance and vendor defaults

Getting and Setting Incus Mac Addresses

May 30, 2026

incus virtualization scripts

View and configure MAC addresses for Incus containers, including a script to generate random virtual MAC addresses

Ansible Accept Host Keys the First Time

May 24, 2026

system-administration ssh

Set up Ansible to accept SSH host keys on first connection while maintaining security for subsequent connections

Remote Unlock with Genkernel

May 21, 2026

gentoo system-administration ssh

Configure genkernel to build an initramfs with SSH and LUKS support for remote system unlocking on Gentoo

Eth0 to Predictable Network Names

May 18, 2026

system-administration gentoo

Migrate from eth0 to predictable network interface names on Gentoo using udevadm and OpenRC

Nmap Cheatsheet

April 21, 2026

system-administration cheatsheet

Essential nmap commands for host discovery, MAC address enumeration, and vulnerability scanning

Dedicated Server, Public Subnet, and Vswitch on Hetzner

March 4, 2026

system-administration virtualization gentoo

Configure Hetzner vswitch with public subnet routing for virtual machines using layer 3 networking instead of layer 2

Hetzner Vswitch/VLAN Configuration

March 1, 2026

system-administration gentoo virtualization

Set up Hetzner vswitch with VLAN tagging for static IP management across virtual machines on Gentoo