Networking Concepts Every DevOps Engineer Must Know

► Grab your Networking Playbook: https://bit.ly/3OR6jZc ► From Zero to DevOps Professional in 6-months: https://bit.ly/4tn8djd This video covers the core networking fundamentals every engineer needs to know - from basic IP addresses to advanced Kubernetes networking. We'll follow a simple approach: watch how one application grows from a single server to a complex cloud system, and learn each networking concept exactly when it becomes necessary. ▬▬▬▬▬▬ 𝗧𝗵𝗮𝗻𝗸𝘀 𝗧𝗮𝗶𝗹𝘀𝗰𝗮𝗹𝗲 𝗳𝗼𝗿 𝗺𝗮𝗸𝗶𝗻𝗴 𝘁𝗵𝗶𝘀 𝘃𝗶𝗱𝗲𝗼 𝗽𝗼𝘀𝘀𝗶𝗯𝗹𝗲! 🙌 ▬▬▬▬▬▬ 👉 If setting up secure network access between your devices and cloud infrastructure still feels painful, Tailscale makes it embarrassingly simple: https://tailscale.com/techworldwithnana 🎁 Use code NANA to get 3 free months off any paid plan! ▬▬▬▬▬▬ What You'll Learn ▬▬▬▬▬▬ → IP addresses, DNS, ports, and network interfaces explained simply → How virtualization and VMs changed networking → Cloud networking: VPC, subnets, security groups, NAT Gateway (AWS) → How Docker networking works (bridge networks, overlay networks, port mapping) → Kubernetes networking deep dive: pods, CNI, services, Ingress, network policies Networking is one of the most important — and most skipped — foundations for DevOps, cloud, and software engineers. In this video, I'll walk you through how networking actually works, from a single physical server all the way to containers and Kubernetes, using one practical real-world example the whole way through. No dry theory. Just concepts that finally make sense. ▬▬▬▬▬▬ 𝗧𝗜𝗠𝗘𝗦𝗧𝗔𝗠𝗣𝗦 ▬▬▬▬▬▬ 00:00 Introduction 00:58 Phase 1: The Physical Server Era (IP, DNS, ports, eth0) 10:30 Phase 2: Virtual Machines & Hypervisors 18:10 Phase 3: Cloud Networking ((AWS VPC, subnets, security groups)) 22:33 Phase 4: Docker Networking ( (Docker bridge, overlay, port mapping)) 28:16 Phase 5: Kubernetes Networking (pods, CNI, services, Ingress, network policies) 37:11 Key Takeaways ▬▬▬▬▬▬ 𝗖𝗼𝗻𝗻𝗲𝗰