VPN – Secure on the Data Highway
I wrote this book because I kept seeing how badly VPNs are misunderstood. Many people use them without really knowing what they do, where the limits are, and where false assumptions can become dangerous.
That is why this book is not a provider brochure, but an honest, technical, and practical guide for people who want to understand what secure VPN usage really requires.
E-book: €9.99 · Print edition: €34.95 + €5.00 shipping within Germany
Who this book is for
For people who do not just want to use VPNs, but actually understand what is going on underneath.
Whether you are a private user, an SMB, or part of an organisation: as soon as data moves across untrusted networks, this topic concerns you.
The book is written in a way that remains readable for non-specialists without losing technical substance.
What you will find inside
- clear foundations on VPNs, tunnelling, routing, and common usage scenarios
- technical context for OpenVPN, WireGuard, IPsec/IKEv2, and related topics
- real risks, common thinking errors, and frequent misconfigurations
- practical guidance for secure day-to-day usage
- a clear distinction between real security and marketing promises
In short: not a shallow quick guide, but an honest technical book with practical relevance.
Versions and ordering
E-book
Available immediately, directly orderable via the cart, and ideal if you want to start right away.
€9.99
Print edition
Printed edition for readers who prefer working with a physical book.
€34.95
plus €5.00 shipping within Germany
Shipping costs are shown transparently and separately in the cart.
Why I wrote this book
I know how quickly people lose orientation in IT topics or fail to notice where the real risks actually are.
It mattered to me to write a book that stays understandable, remains honest, and does not pretend there is a magical easy fix for everything.
If this book helps you act more securely, understand things more clearly, and make better decisions, then it has achieved exactly what it was meant to do.