#cidr articles | Hashnode

ASAbhijeet Shindeweeklyupdate.hashnode.dev4d ago · 6 min read

IP Addressing, CIDR & Subnet Masks — How Devices Know They're on the Same Network

1. Why This Topic Matters In the last post, I mapped out what happens when you call fetch() — the browser hands off to the OS, DNS resolves a domain, TCP shakes hands, and the request eventually gets

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ARAnkit Rajaws-networking-explained.hashnode.devDec 29, 2025 · 4 min read

🚀 AWS Networking Explained with Hands-on Project (VPC, Subnets, IGW, NAT, Peering & CIDR)

When learning AWS networking, concepts like VPC, subnets, route tables, IGW, NAT Gateway, CIDR, and VPC peering can feel confusing without hands-on practice. In this blog, I’ll: Explain core AWS networking concepts in simple terms Walk through a re...

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KSKodali sai kishorekishoreinfosec.hashnode.devOct 19, 2025 · 5 min read

🧩 Computer Networking Basics – Understanding IP, IPv4, and Subnet Mask (Beginner’s Guide)

🌐 Introduction When I first started learning about Computer Networking, all those terms — IP addresses, routers, subnet masks — felt like a foreign language.But as I went deeper, I realized networking is just about how devices talk to each other — l...

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BSBittu Sharmabittublog.hashnode.devSep 26, 2025 · 4 min read

🧩 CIDR for DevOps Engineers: A Complete Guide with Practical Examples

As a DevOps Engineer, you’ll often design and manage cloud networks, Kubernetes clusters, and VPCs. At the heart of all these lies a concept that defines how networks are structured and divided: CIDR (Classless Inter-Domain Routing). Whether you’re p...

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HSHarshal Sonarharshalsonar.hashnode.devAug 14, 2025 · 5 min read

🚀 Networking Basics for Cloud & DevOps Beginners – Part 1 of Docker Networking Series

Before learning Docker Networking, it’s essential to understand basic networking concepts such as IP addresses, subnets, subnet masks, gateways, and CIDR.Many beginners get confused with these terms, so we will break them down step by step, with exam...

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KKKunal Kumar Singhcreate-vpc-using-required-cidr.hashnode.devAug 5, 2025 · 2 min read

Create a VPC using IPv4 CIDR

In Day 3 we have seen how we can create a VPC today we will see how we can create a VPC using specified IPv4 CIDR address. It is very small task for today we just need a slight change from the Day 3. Let’s do it. Scenario : The Nautilus DevOps team i...

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VDVaishnavi Dzerotoroot.hashnode.devJul 20, 2025 · 5 min read

Day 78 of 90 Days of DevOps Challenge: VPC Components in detail

Yesterday, I learned that a VPC provides you with your own private, isolated section of the AWS cloud, where you can launch resources securely. And hypervisors, although invisible to most of us, are the virtual engine room that powers the entire clou...

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PBPravin Bhatiyanetworking-in-cybersecurity.hashnode.devJul 16, 2025 · 2 min read

Cybersecurity Fundamentals 07

Locking Data & Unlocking Careers Part 7 : Cryptography — The Science That Keeps Secrets Safe What makes WhatsApp chats private? Or keeps your online banking secure?It’s not luck. It’s cryptography — the art and science of hiding information. 🔍 Wha...

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JBJack browntechnicaljack.hashnode.devMay 29, 2025 · 2 min read

🔗 Demystifying Subnetting and CIDR – The Power Behind Smarter IP Networks

Subnetting and CIDR might sound intimidating, but they’re foundational skills for anyone working with networks. In this post, I’ll break down the concepts in a simple way and show you how to calculate subnets in seconds using a free tool I built: Sub...

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S(Shivam (Anirudh) Nandyanirudhh.hashnode.devMay 6, 2025 · 6 min read

How CIDR Transformed IP Addressing

Before you jump to CIDR, let’s take a deep breath and understand the basics of IP addresses and what they really are. Imagine you're writing a letter to a friend. You need their house address so the mailman knows where to deliver it, right? The inter...

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