---
title: "Discussion on \"Understanding TCP — Segments, Sequence Numbers & Connection Termination\" | Hashnode"
description: "Discussion on \"Understanding TCP — Segments, Sequence Numbers & Connection Termination\". How TCP establishes reliable connections, what's inside a TCP segment header, how ACK numbers enable reordering, and how the 4-way close works."
url: "https://hashnode.com/posts/understanding-tcp-segments-sequence-numbers-termination/6a6ef8e19433ddc0bc313211"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [Understanding TCP — Segments, Sequence Numbers & Connection Termination](https://weeklyupdate.hashnode.dev/understanding-tcp-segments-sequence-numbers-termination?utm_source=hashnode&utm_medium=feed)

How TCP establishes reliable connections, what's inside a TCP segment header, how ACK numbers enable reordering, and how the 4-way close works.

Aug 2 · 6 min read · weeklyupdate.hashnode.dev  
Read the article

-   [#computer-networking](https://hashnode.com/tag/computer-networking)
-   [#tcpip](https://hashnode.com/tag/tcpip)
-   [#networking](https://hashnode.com/tag/networking)
-   [#tcp-handshake](https://hashnode.com/tag/tcp-handshake)
-   [#tcp-header](https://hashnode.com/tag/tcp-header)
-   [#learning-journey](https://hashnode.com/tag/learning-journey)
-   [#build-in-public](https://hashnode.com/tag/build-in-public)

## Written by

[Abhijeet Shinde](https://hashnode.com/@abhijeet2005)

@abhijeet2005 · Mumbai

  
[View profile](https://hashnode.com/@abhijeet2005)

Curious Polymath | Student Software Engineer | Learning to Build Reliable & Scalable Systems

I’m a curious learner and aspiring software developer who enjoys building real-world systems, exploring new technologies, and learning in public. I write about coding, personal growth, and turning ideas into practical systems—while simplifying complex concepts for others.

## Responses

Markdown supported · ⌘↵ to post

No responses yet.