There is a certain temptation when learning Linux to immediately build a gigantic home lab with: (Ok, maybe I’m exaggerating quite a bit) And then three days later you realize you can no longer remember which VM broke DNS. So I decided to start smaller. Way effing smaller. Instead of building a fake Fortune 500 data center in my laptop,
Category: Networking
Excerpt I was following a Linux networking course and just wanted to run Ubuntu in GNS3. Instead, I spent the evening fixing permissions, ports, storage, virtualization, and my own bad assumptions. Post I was following a Linux course for networks by David Bombal. The plan was simple: You know… a lab. Instead, I ended up learning and debugging the damn
There is something almost insulting about how simple the internet feels. You type a name. It responds. As if by instinct. As if somewhere behind the curtain there is intelligence, intention, maybe even elegance. There isn’t. There are numbers. Cold, indifferent numbers. IP addresses. The kind that do not care what you think you are doing, only where your data
I came across DNS while going through Chapter 7, and it felt like one of those topics that looks simple at first and then slowly reveals how much of the world depends on it. DNS is not something people talk about. It does not have the appeal of artificial intelligence or cybersecurity or whatever the current buzzword happens to be.
How to use PowerShell to find the living machines and the listening services, and then document the carnage You run a network. People lie about what is online. Firewalls pretend to be polite. Your job is to stop believing statements and start believing signals. Ping sweeps and port scans do what polite questions will not: they expose truth. Do this
Packets don’t lie. You just need the right tool to hear what they’re saying. The Eternal Packet Debate Every network engineer has that moment of doubt. You’re staring at your terminal, packets are flying, and you ask yourself the age-old question: Should I fire up Wireshark or stick with tcpdump? Both tools live in the same world of packet capture
When your desktop gives you the finger, it’s not failure, it’s feedback. Every crash, every freeze, every fan screaming for mercy is your lab teaching you what the classroom never could: limits, patience, and the beauty of breaking things just to learn how to fix them. The Dream (The Impossible Dream) You start with ambition. You tell yourself this is
We thought the cloud would free us from risk. It simply reminded us that every solution carries its own kind of failure. When the Cloud Blinked The world slowed down for a moment, not because of disaster or conflict, but because a few servers inside Amazon’s vast digital empire stopped responding. AWS went down, and suddenly, students could not log
The cloud isn’t magic—it’s someone else’s network, rented by the minute. Master it, or it will master you. The Illusion of the Cloud People love saying “it’s in the cloud”—as if that erases the need for cables, routers, and subnets. It doesn’t. Every byte of “cloud” data still travels through copper, fiber, and radio waves. The only difference is that
A secure Windows network is not built on trust or technology. It is built on doubt, discipline, and the refusal to believe that anything is ever safe. The Illusion of Safety We like to think a Windows network is safe because it is Windows. Familiar. Polished. Backed by billion-dollar branding. The truth is, Windows is only as secure as the