AWS NWD10: Operating System and ApplicationInside Amazon EC2, once the Security Group allows the traffic, AWS networking is finished and the packet is delivered to the instance's operating system. What Happens Next 1. OS Firewall The operatinMar 15, 2026·1 min read
AWS NWD5: SubnetAfter the Route Table, the packet is forwarded to the Subnet. Inside Amazon Virtual Private Cloud, the route table only decides where the packet should go next. Once the destination is determined, theMar 15, 2026·2 min read
AWS NWD4: Route TableA Route Table in Amazon Virtual Private Cloud is a set of rules that determines where network traffic should be directed inside a VPC. It acts like a navigation map that tells AWS which path a packet Mar 15, 2026·2 min read
AWS NWD3: Internet GatewayWhat is an Internet Gateway An Internet Gateway is a highly available AWS managed component that allows communication between a VPC and the public internet. It performs two main functions: Provides aMar 15, 2026·2 min read
AWS NWD2:Key Points of EC2 NetworkingInternet GatewayEntry point that connects the internet with your VPC. VPC RouterAWS internal router that decides where the packet should go. Route TableDefines how traffic is routed inside the VPC. Mar 15, 2026·1 min read
AWS NWD1:Understanding AWS Networking with a Simple Building Security Model![](https://cdn.hashnode.com/uploads/covers/6932b3a2befcebb3149cf31a/5c2073c6-17ea-4e1d-aeca-26b2e071e2cd.png align="middle") When engineers start learning networking in Amazon Virtual Private Cloud, Mar 15, 2026·2 min read
Day 3 Ubuntu: Level 2 Linux Production Incident ChallengeIf you are preparing for a DevOps or SRE switch, basic Linux commands are not enough. Scenario Alert received: Application latency is high. Users are facing errors. You log into the server. What dFeb 24, 2026·3 min read
