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WireGuard Kill Switch (IPv4): Block All Traffic If the VPN Drops Summary: Configure WireGuard with a kill switch that blocks all IPv4 internet traffic whenever the VPN tunnel is down,…

WireGuard Split Tunneling: Route Internet Through VPN, Keep Local Access Summary: Configure WireGuard to route all internet traffic through the VPN while keeping direct access to local network devices like…

WireGuard Client Setup on Ubuntu Summary: Install WireGuard on Ubuntu, generate keys, configure a VPN tunnel to a remote server, and verify the connection. KeyValueServer public IP203.0.113.10Client public IP198.51.100.50VPN subnet10.0.0.0/24Server…

Networking Basics for VPN Users Summary: A quick primer on IP addresses, public and private networks, subnet masks, CIDR notation, ports, and DNS — the concepts you need to follow…

Packaging Your Own Software for a PPA (From Scratch) Example Values Used in This Tutorial This tutorial uses the following fake example values throughout. Replace them with your own real…

Uploading cmatrix to a PPA (PPA Upload Tutorial) Example Values Used in This Tutorial This tutorial uses the following fake example values throughout. Replace them with your own real details…

Packaging cmatrix with quilt (Local Build Tutorial) Example Values Used in This Tutorial This tutorial uses the following fake example values throughout. Replace them with your own real details when…

Key Management for Launchpad (GPG + SSH) Example Values Used in This Tutorial This tutorial uses the following fake example values throughout. Replace them with your own real details when…

The following guide is for OPNsense 25.7.7_4 In part 1 we will explore the creation of a cron activated recovery script. A complete guide to automatically recover DHCP outages Some…

At first glance, it looks deceptively simple, “fill down Excel cells.”But that innocent-sounding task hides one of the most persistent, high-friction data problems in business: the hierarchical Excel sheet. Every…