---
title: "Discussion on \"Hands-On: Security Groups and NACLs in Action\" | Hashnode"
description: "Discussion on \"Hands-On: Security Groups and NACLs in Action\". I flipped a NACL rule order and lost access to my own app. Here's what Security Groups and NACLs actually do when you push them in a real VPC."
url: "https://hashnode.com/posts/hands-on-security-groups-and-nacls-in-action/69d3601140c9cabf44c8388f"
---

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# [Hands-On: Security Groups and NACLs in Action](https://aayush-dev.hashnode.dev/hands-on-security-groups-and-nacls-in-action?utm_source=hashnode&utm_medium=feed)

I flipped a NACL rule order and lost access to my own app. Here's what Security Groups and NACLs actually do when you push them in a real VPC.

Apr 6 · 3 min read · aayush-dev.hashnode.dev  
Updated Apr 20  
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## Written by

[Aayush Darange](https://hashnode.com/@aayushdarange)

@aayushdarange

  
[View profile](https://hashnode.com/@aayushdarange)

Devops Engineer | Cloud

DevOps engineer focused on building, automating, and securing cloud infrastructure. I work with AWS, Docker, Terraform, and CI/CD pipelines to ship scalable and reliable systems. I write about cloud services & architecture, deployment strategies, and real-world DevOps practices.

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