Free Online courses

Online courses can provide you the time to dig deeper and truly master a new skill tr topic. Open Yale Courses and MIT Open CourseWare are two of the best places to learn about new topics, ideas, concepts, and better ways to solve problems in life and business.

zerotier

ZeroTier’s software is open source and free to use for most purposes including personal useinternal use within a business or academic institution, and evaluation for uses that require commercial licensing.

https://www.zerotier.com/pricing/

Roberts RM33 Raspberry Pi Internet Radio (Yet Another…)

https://www.instructables.com/id/Roberts-RM33-Raspberry-Pi-Internet-Radio-Yet-Anoth

LFCE: Advanced Linux Networking

https://app.pluralsight.com/library/courses/linux-networking-advanced-lfce/table-of-contents

Freeware library to create Excel files

https://github.com/dotnetcore/NPOI

How To Install and Configure OpenVPN On Your DD-WRT Router

https://www.howtogeek.com/64433/how-to-install-and-configure-openvpn-on-your-dd-wrt-router/

Installing OpenVPN client and server on a DD-WRT router

How to install OpenVPN on Ubuntu 16.04

Open Port Check Tool

https://networkappers.com/tools/open-port-checker

 

https://www.yougetsignal.com/tools/open-ports/

An In-Depth Guide to iptables, the Linux Firewall

This is a great guide to iptables:

An In-Depth Guide to iptables, the Linux Firewall

An easy way to generate a self-signed certificate online

You can generate a self-signed certificate online here:

http://www.selfsignedcertificate.com/

This will generate a two files – a certificate and a key.

If you are using IIS server you need to convert these to .pfx. For this you can use the SSL Converter here:

https://www.sslshopper.com/ssl-converter.html