---
title: "Discussion on \"Building a Secure AWS Network From Scratch: Public Subnet, Private Subnet, Bastion Host, and NAT Gateway\" | Hashnode"
description: "Discussion on \"Building a Secure AWS Network From Scratch: Public Subnet, Private Subnet, Bastion Host, and NAT Gateway\". When you first launch an EC2 instance, AWS feels simple.\nYou click a few buttons.You get a public IP.You SSH in.\nAnd for a while, that feels like “cloud”.\nBut the moment you ask:\nWho should be allowed in?\nWho should never be seen?\nHow do private syst..."
url: "https://hashnode.com/posts/building-a-secure-aws-network-from-scratch-public-subnet-private-subnet-bastion-host-and-nat-gateway/695a662bc11e8123be6c7468"
---

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# [Building a Secure AWS Network From Scratch: Public Subnet, Private Subnet, Bastion Host, and NAT Gateway](https://yashwanth11187aws1.hashnode.dev/building-a-secure-aws-network-from-scratch-public-subnet-private-subnet-bastion-host-and-nat-gateway?utm_source=hashnode&utm_medium=feed)

When you first launch an EC2 instance, AWS feels simple. You click a few buttons.You get a public IP.You SSH in. And for a while, that feels like “cloud”. But the moment you ask: Who should be allowed in? Who should never be seen? How do private syst...

Jan 4 · 5 min read · yashwanth11187aws1.hashnode.dev  
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