---
title: "Discussion on \"Day #24: Understanding Traffic Control in AWS: Security Groups & NACLs\" | Hashnode"
description: "Discussion on \"Day #24: Understanding Traffic Control in AWS: Security Groups & NACLs\". Let's understand what really happens before traffic reaches our EC2 instance."
url: "https://hashnode.com/posts/day-24-understanding-traffic-control-in-aws-security-groups-and-nacls/691df07d315dd94d348ef43f"
---

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# [Day #24: Understanding Traffic Control in AWS: Security Groups & NACLs](https://learning-out-loud-my-devops-journey.hashnode.dev/day-24-understanding-traffic-control-in-aws-security-groups-and-nacls?utm_source=hashnode&utm_medium=feed)

Let's understand what really happens before traffic reaches our EC2 instance.

Nov 19, 2025 · 7 min read · learning-out-loud-my-devops-journey.hashnode.dev  
Updated Jan 10  
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-   [#aws](https://hashnode.com/tag/aws)
-   [#vpc](https://hashnode.com/tag/vpc)
-   [#vpc-basics](https://hashnode.com/tag/vpc-basics)
-   [#aws-security-group](https://hashnode.com/tag/aws-security-group)
-   [#aws-nacl](https://hashnode.com/tag/aws-nacl)

## Written by

[Arnab](https://hashnode.com/@arnabnandi)

@arnabnandi · Kolkata, India

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

Once in a non-tech path, now growing a genuine love for DevOps. Documenting my journey, learnings, and everything in between.

Sharing real-time progress, roadblocks, and open source lessons. Hoping my notes help someone else feel less stuck. "Stop waiting to feel ready, stop waiting for the perfect moment, start messy, start scared and start before you feel qualified"

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