How to Filter Websites with Cloudflare Zero Trust
Administer custom control of the web in your home or business.
Public-Key/Asymmetric Cryptography Explained
A primer on the single most important technology in cyber security.
How to Build a Secure Mini CA with a Raspberry Pi and Yubikey
Create a small certificate authority for your home network by running Step-CA on a Raspberry…
How to Prepare a Headless Raspberry Pi For Your Network
Configure a Raspberry Pi that's ready to go on your network at the first bootup; no keyboard…
GnuPG Part 4 – Encrypt and Sign Files
How to manually encrypt and sign files with GnuPG.
GnuPG Part 3 – Import, Sign, and Trust Keys
How to import public keys from other PGP users, perform key signing, and how trust works.
Do I Need a VPN? Their Uses Explained
A primer on Virtual Private Networks (VPNs) for average users.
Email Security – SPF, DKIM, and DMARC Demystified
Introduction to the email security standards SPF, DKIM, and DMARC.
GnuPG Part 2 – Create and Manage Keys
Generate and manage PGP keys with GnuPG.
GnuPG Part 1 – Introduction
Introduction to PGP encryption with GnuPG on Linux.