Hi everyone 👋
Now, before we dive into the nitty-gritty of things such as IP addresses, subnets, firewalls, and protocols, I have one question to start off with you.
What, according to you, was the first-ever message ever communicated through a computer network?
No, not "Hello, world."
And not something deep, either.
Quite simply, it was "LO".
One of the researchers at UCLA was typing the word "LOGIN" to the computer at the Stanford Research Institute, located about 350 miles away. The L arrived. The O arrived. He typed the G, and the system at Stanford crashed.
The message that was sent for the first time through a computer network was a sign of an inevitable failure. The two letters that emerged from that failure, however, have changed the entire history of networking.
That happened on October 29, 1969.
Recently, I have uploaded a premiere post for a new series: Networking Foundations, a 14-post series that covers you from the very first step in computer networking to Zero Trust security, cloud infrastructure, and packet analysis.
Post 1 is called: What is a network? The why before the how. And the "why" is a story most guides skip entirely.
Here’s the blog talks about:
🔹 The comprehensive origin tale: from Cold War tensions to the very first four nodes of ARPANET
🔹 What exactly is a network: the proper definition starting from basics
🔹 The four kinds of networks (PAN, LAN, MAN, WAN) and how their security differ
🔹 What goes on when you input a URL: the whole process, each one of the attack surfaces
🔹 The trust issue: how the design of the internet is the main cause of most security problems
🔹 Useful commands: ping, traceroute, ipconfig, check out your network right now
This supplement comprises four original diagrams crafted exclusively for the blog post, which include a geographic ARPANET map that depicts the initial four nodes and the first connection.
This is Post 1 of 14. The complete series will take you through topics such as IP addressing, DNS, cloud networking, packet analysis with Wireshark, and Zero Trust architecture, all the while incorporating security at every stage.
If you have ever desired a solid groundwork in networking, not a mere overview of the surface but an insightful, well-connected comprehension, this series has been designed for you.
📖 Read Post 1 here: https://vickkykruzprogramming.dev/blog/what-is-a-network-the-why-before-the-how
Also, get a subscription to our newsletter to have each new installment of the series straight into your inbox right when it gets published. 🔔