What is DDNS? – Dynamic DNS Explained

What is DDNS? Dynamic DNS is a service that allows you to access devices that are in your home, such as a computer, router, or security camera, even if your IP address changes.

What is a Firewall? 6 minutes Nugget

What is a Firewall? This is an animated video explaining what a network firewall is. A firewall is a system that is designed to prevent unauthorized
access from entering a private network by filtering the
information that comes in from the internet.

Digging Into Android Startup

Android Startup – High-level walk-through of the Android boot process, from power button to Launcher. Discussion of Android application launching process.