---
title: "Discussion on \"Understanding the OSI Model and TCP/IP Layers\" | Hashnode"
description: "Discussion on \"Understanding the OSI Model and TCP/IP Layers\". A clear breakdown of the OSI model's 7 layers and how they map to the TCP/IP model's 4 layers, with security relevance for each layer."
url: "https://hashnode.com/posts/understanding-the-osi-model-and-tcp-ip-layers/6a346a27ec2361f099960153"
---

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# [Understanding the OSI Model and TCP/IP Layers](https://jeji-james.hashnode.dev/understanding-the-osi-model-and-tcp-ip-layers?utm_source=hashnode&utm_medium=feed)

A clear breakdown of the OSI model's 7 layers and how they map to the TCP/IP model's 4 layers, with security relevance for each layer.

Jun 18 · 2 min read · jeji-james.hashnode.dev  
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-   [#networking](https://hashnode.com/tag/networking)
-   [#osi-model](https://hashnode.com/tag/osi-model)
-   [#tcpip-model](https://hashnode.com/tag/tcpip-model)

## Written by

[Jeji James](https://hashnode.com/@jeji-james)

@jeji-james · Dublin, Ireland

  
[View profile](https://hashnode.com/@jeji-james)

From Curious Beginner to Cybersecurity Professional

Former Software Engineer | Master's Student in Cyber Security. Passionate about cybersecurity, networking, Linux, cloud security, GRC, and ethical hacking. I use this space to document my learning journey, share technical write-ups, and explore the evolving world of information security.

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