TCP/IP from Scratch: Building a Network Stack in Code

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About this Course

Understand network protocols by writing raw sockets and parsing packets. This comprehensive curriculum is designed to give you hands-on experience with TCP/IP from Scratch: Building a Network Stack in Code. This Network Engineering curriculum is designed to give you hands-on experience and deep conceptual understanding. Across 7 intensive modules, you'll tackle real-world challenges and build practical projects that reinforce your learning. By the end of this journey, you'll have the skills and proof of work to demonstrate your expertise.

What you'll learn

Capture and parse raw Ethernet frames from the network interface.

Implement ARP to discover MAC addresses on the local network.

Parse IPv4 headers and implement a basic ping utility.

Understand connectionless transport and build a simple UDP echo server/client.

W1

Raw Sockets and Ethernet Frames

Capture and parse raw Ethernet frames from the network interface.

3 videos•35m

3 readings

3 topics

1 homework

Topics

1.1

OSI and TCP/IP Models

12 minutes

1.2

Raw Sockets

12 minutes

1.3

Ethernet Frame Structure

11 minutes

Study Resources

→Unpacking a Raw Packet | Ethernet Frame | Part -1 - Medium →Ethernet Frame Capturing and Programming with Ethernet →GitHub - Aditya2906040/EthernetFrameParser: Ethernet Frame ...

W2

Address Resolution Protocol (ARP)

Implement ARP to discover MAC addresses on the local network.

3 videos•46m

3 readings

3 topics

1 homework

W3

The IP Layer and ICMP

Parse IPv4 headers and implement a basic ping utility.

3 videos•77m

3 readings

3 topics

1 homework

W4

UDP and Basic Transport

Understand connectionless transport and build a simple UDP echo server/client.

3 videos•34m

3 readings

3 topics

1 homework

W5

TCP Fundamentals (Handshake)

Implement the TCP 3-way handshake and sequence number tracking.

3 videos•40m

3 readings

3 topics

1 homework

W6

TCP Reliability and Teardown

Understand flow control, congestion, and connection termination.

3 videos•41m

2 readings

3 topics

1 homework

W7

Congestion Control and Windowing

Manage data flow reliability using sliding windows, retransmissions, and congestion avoidance.

3 videos•57m

3 readings

3 topics

1 homework

01

Learn

Watch curated videos and read study resources

02

Practice

Practice what you learned

03

Build Projects

Build projects using your new gained knowledge

04

Submit & Verify

Submit your project and get verified by our system

References

01Unpacking a Raw Packet | Ethernet Frame | Part -1 - Medium

02Ethernet Frame Capturing and Programming with Ethernet

03GitHub - Aditya2906040/EthernetFrameParser: Ethernet Frame ...

04GitHub - eprei/42_ft_malcolm: Educational project implementing ARP...

05Raw sockets for ARP: protocol 0x806 - Processors forum...

06GitHub topics: arp | Ecosyste.ms: Repos

07Protocol Parsing | sorah/xlat | DeepWiki

08pings/pings/ping.py at master · satoshi03/pings · GitHub

09sockets - Implementing ICMP ping in Go - Stack Overflow

10UDP and Raw IP Sockets | rapid7/rex-socket | DeepWiki

11UDP and RAW | lwip-tcpip/lwip | DeepWiki

12UDP and RAW Sockets - polimi.it

13TCP 3-Way Handshake Process - GeeksforGeeks

14TCP 3-Way Handshake Explained | openpcap.com

15How to reproduce TCP protocol 3-way handshake with raw ...

16Transmission Control Protocol - Wikipedia

17TCP (Transmission Control Protocol) Congestion Control | Noction

18Congestion Control in Computer Networks - GeeksforGeeks

19Handout # 17: Congestion Control - cs.toronto.edu

20Congestion Control Techniques in Computer Networks

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