Linux tmpfs for Speed and Temporary Storage
Some things in Linux are hiding in plain sight. tmpfs is one of them. You use it every day without thinking about it. Every time you use /dev/shm, inspect /run, or work on…
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nmap on Linux: Guide to Network Scanning and Discovery
nmap is one of those tools every sysadmin eventually needs. For auditing servers, mapping out a home lab, or troubleshooting a connectivity issue, knowing how to use nmap properly saves a lot of…
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Linux Server Setup – Part 1: A Beginner’s Guide
Setting up a Linux server is one of the best ways to learn Linux and server management hands-on. Linux servers offer unmatched flexibility, performance, and control for hosting services, running applications, supporting production…
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What to buy for your Raspberry Pi 4
Update 2026: This article has been updated to fix broken links and verify long-term reliability. After 4 years, every device recommended below is still working in my lab, including multiple SD cards that…
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Raspberry Pi Reliability Has a Storage Problem
Raspberry Pi board has earned its reputation as one of the most versatile and capable single-board computers ever made. From home labs, to kiosks and lightweight infrastructure, the hardware itself is rarely the…
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Firewalla Gold Plus vs. Ubiquiti UDM Pro Max
In the market for a multi‑gigabit firewall/router, two names come up repeatedly: Firewalla Gold Plus and Ubiquiti Dream Machine Pro Max (UDM Pro Max). Both cost around $600 USD, sit at or near…
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What to buy for your Raspberry Pi 5
Back in January 2014, I ordered my first Raspberry Pi (Model B revision 2). Very soon, I realized that there was a host of options to choose from for the required accessories needed…
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Raspberry Pi Not Booting: How to Repair Micro SD Card
I have a Raspberry Pi 4 (2 GB RAM) that’s been running my UniFi Network Controller for about four years without issues. Yesterday it was unresponsive and would not boot at all. The…
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I was wrong! zswap IS better than zram
Rule of thumb / TL;DR:If your system only uses swap occasionally and keeping swap demand within ~20–30% of your physical RAM as zram is enough, ZRAM is the simpler and more effective option….
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Replace ISP Modem / Router
Many Internet Service Providers (ISPs) like AT&T, Comcast, Xfinity, Cox, Verizon, Spectrum, T-Mobile, and others supply a basic modem/router combo (gateway) to customers. These devices are often adequate to get online, but they…
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How I Chose the Best Managed Network Switch for My Home Lab
Recently, I started the process of upgrading my home network to give myself more room to experiment and grow. The first major step was replacing my router with a new firewall appliance, which…
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Learn Linux: 4 Devices to boost your Linux skills (2025)
Ready to go on a journey that will take your Linux skills to the next level and beyond what theoretical learning can? The devices in this article will give you hands-on experience and…
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5 Network Devices for work-from-home and Small Business
Over the past few years, we’ve seen a mass migration from the work office to the home office. This continues to increase the requirements for better home network security, capacity, and additional capabilities….
