Today, we published our fourth digital guide in the Extreme Privacy series. This time, it is all about VPNs and firewalls. 9 chapters | 34,000 words | 87 pages | $20. This digital (PDF) supplement to Extreme Privacy continues a new approach to our tutorials. It is not a replacement for the printed book, but a much more thorough guide about VPNs and firewalls. It provides our entire playbook which we use for our clients when we need to issue network-wide firewalls which must be private and secure. We also explain all maintenance and best practices for this new lifestyle. All updates are free and delivered digitally. More details can be found at https://inteltechniques.com/book7d.html.