High Level Tech Intro Archives — Page 3 of 4

Raspberry Pi – Teaching Electronics + Programming in Large Virtual Events Part 1

The Raspberry Pi Foundation was founded in 2009 to teach basic computer science. Inexpensive, standardized and versatile. If you are going to leverage them to teach electronics in a larger setting, especially virtual events, there are some best practices that will reduce friction, allow you to teach larger groups and…

How to Include a Raspberry Pi in a Remote Demo – Part 2

March 20, 2021 High Level Tech Intro Raspberry Pi No Comments

A few posts back I had an article on How to Include a Raspberry Pi in a Remote Demo. We just did another virtual event leveraging Raspberry Pis with more than 3 dozen attendees. and I’ve discovered a few more tricks I’d like to share. A minor one was the…

Slackware, Still Very Much Alive

February 28, 2021 High Level Tech Intro No Comments

A recent article at tecmint.com says that there are over 600 Linux distros (distributions). Of those 500 are in active development. If you aren’t familiar, a “distro” is a way of packaging up the Linux kernel with a set of applications. Different ones have evolved with different priorities and methodologies.…

When a 2% Increase in Cache Hit Rate Can Save You 20% in Data Center Costs

February 19, 2021 Analytics CDNs High Level Tech Intro No Comments

One of the key differences with Fastly is the ability to Cache the Uncacheable. You can programmatically purging content so fast that we even have customers caching API read calls. The cache holds onto content longer rather than passing to origin on “uncacheable” content. When the data changes, your system…

How to Include a Raspberry Pi in a Remote Demo – Part 1

January 30, 2021 High Level Tech Intro Raspberry Pi No Comments

Raspberry Pi single board computers have been around for more than 8 years now. They are great for IoT (Internet of Things), learning about InfoSec (Information Security), as a portable/inexpensive development environment or working into events to teach programming or electronics. When the time comes to do a virtual course…

Reverse Engineering a Linux Install

January 23, 2021 High Level Tech Intro No Comments

The Linux world is full of different package managers. Yum, Apt and others can make it complex when a solution doesn’t support a distro (distribution) you are already standardized on. If the option of compiling yourself is not available, the next option is to convert the available packages or extract…

VNC, A Quick Introduction

November 30, 2020 High Level Tech Intro Raspberry Pi No Comments

When I started in tech, the command line was everything. You’d telnet (gasp!) or ssh into different systems and do your updates, upgrades and configurations. More and more systems now have a UI now, and not everything can be done via web page. So how do you remotely (and securely!)…

j5 USB-C Triple Display Docking Station

September 30, 2020 Gear High Level Tech Intro No Comments

Desktop real estate is key to productivity, especially when working on complex topics. The more you can see without having to scroll means less mental energy goes into adjusting to pages scrolling or tabs switching. I’ve recently written about how I’ve achieved this with Linux. For work I’m on a…

Authentication? Authorization? What’s the diff?

February 12, 2020 High Level Tech Intro No Comments

Early on in security courses one of the key lessons is around authentication, authorization and access control. The first two are fairly straight forward. They then roll into the last of the concepts – access control which I’ll cover last. Authentication Authentication is verifying that you are who you claim…

Regex and Performance

January 15, 2020 High Level Tech Intro No Comments

Compute power costs money. This is one reason why it is important that developers write their regular expressions (regex) with efficiency in mind. It also needs to be written correct so that it functions explicitly as intended. I was using a SaaS tool to simulate the performance impacts of certain…

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