Network Concepts and Programming from Scratch
Networking course with fundamental concepts in depth with TCP/UDP/HTTP Socket Programming for beginners to expert
What you’ll learn
Confident at Answering Networking Related Question
Open up opportunities to Networking/System programming Companies
Get familiar with Linux and Learn Linux System programming side by side
Build Github portfolio, strengthen your employability
Decorate your Resume with projects done in this Course
Learn Networking concepts at all Layers of OSI Model
Course content has been designed keeping the MNCs interviews in Mind
Coding Assignments and Projects
Become a Networking professional Developer
Master designing and Writing TCP/UDP Servers in Linux environment
Build & Decode the complete packet from scratch
Concept of Packet Encapsulation
L2 and L3 Routing, Vlan based Routing
Network Concepts and Programming from Scratch
Basic UG course on Networking
Basic programming skills in C is required
1. Understand the Functioning of TCP/IP Stack (OSI Model). Understand the function of each layer in TCP/IP stack in good detail.
2. Explain the L2 routing concepts – Mac Addresses and ARP
3. Explain the L3 routing concepts – IP Addresses and IP protocol
4. Understand various ways to design a Linux TCP/UDP server program in C
5. Understand Socket programming in C
6. Understand the Networking devices functioning – L2 switch and L3 router
7. Understand packet Journey through the layers of TCP/IP stack
8. Design and implement HTTP Webservers from scratch
9. Read and manufacture the network packets from scratch
10. Understand the concept of TLVs
11. Concept of packet Encapsulation
12. Understand Domain Name System (DNS)
13. Virtual LANs (VLANs) and Routing in VLANs
14. Broadcast Domain and Collision Domain
We Understand – Networking by its nature is inclined towards being a theoretical subject of study. To arouse the interest of the students ,we elaborate each and every topic of this course through an assignment or project.
This course is thorough. We explain the design, discuss the code flow and then guide the audience how to implement the particular concept design in detail in a step by step manner. All you need is a Linux OS running on your system to do this course.
Who should do this course ?
The topics covered in this course are of utmost importance from interviews aspects and students graduating in computer science and looking to seek an opportunity in MNCs as a developer should have Networking concepts at his/her finger tips.
Better to have done Networking under graduate course, not mandatory.
Job seekers trying for the position of Networking developers in product based MNCs System software development including Networking is an evergreen area. Internet will not going to be doomed ever.
There is no pre-requisite for this course, however, it shall be advantage if you know a little of C.
Also, Please just do not sit and watch my codes. Write your own codes, even if it is same as mine !
We have a strong reasons to choose C as a language for this course:
1. The entire core networking development work is being done in C in industry. So, this reason alone is good enough that you should learn network development in C if you are aiming to join industry as a network protocol developer.
2. Network equipment need to interact with underlying hardware – the ASIC chips. What could be a better language other than C when it comes to interact and program the hardware.
3. C is middle level language – not as low as assembly, neither as high as Java/Python.
In C, its the programmer’s responsibility to write every line of code to get the task done, unlike Java/Python which provides rich rest of libraries to do the most tasks for you.
Using High Level Languages for learning network programming would obscure the low level details of networking
– that is what is going behind the scenes. If you are are beginner in network programming, you must learn things from scratch and only C provides you the opportunity to do that. So, you must do all your assignments in C.
4. Networking is all about cooking up the packets and sending it out of wire.
C will allow you to cook packets exactly the same way as you would like them to appear on wire. Lot of Bit level programming.
5. If you are a beginner in Networking, pls refrain from learning network programming in High Level Languages such as Java Or Python. It is not job oriented thing to do in networking domain.
No Third Party libraries
Whatever logic you implement, you need to implement it from scratch.
This course do not suggest taking help of any third party library to get the jobs done.
Use of external libraries completely defeats the purpose of the course.
However, it is recommended to use third party libraries for commonly used data structures such as linked lists/Trees/Queues etc which saves a lot of time implementing these data structures.
What else along with the course ?
If you are aiming to become a developer, then, besides strong in Data structure and Algorithms, you should have clarity of concepts related to other Linux utilities.
Networking is all about system programming, and you would be interested in learning other linux concepts of prime importance such as Inter Process Communication, Remote Procedure Calls etc.
Please take a look at my other courses in this regard.
These courses will summed you up as a more competitive developer in Networking & System Programming domain.
See what students are saying about this course
Just Take a Look at These Top Rated Reviews (Browse review section to verify these reviews)
He has put his sweat and heart into it.
The way he explains things keeps you hooked on to this course.
He directly gets TO THE POINT without beating around the bush.
No author of any networking book can explain things like Abhishek is doing.
What Abhishek is doing is that he is explaining the Meat of the subject.
One would have to read 10 books to understand this. or perhaps more.
There was a hunch in my heart that dont know networking clearly.
This course meets my expectations with respect to content, clarity and teaching style with proper presentations.
This course improves your understanding and removes the fear of not knowing…
not only that, it injects a good amount of confidence about your knowledge of Networking…Thanks for coming up with such a course. Thanks Again.
***** Come across right course at right time.
This course seems cover all important areas of networking. Author explains the topics in good detail and with good pace.
This course looks like designed to beat technical interviews.
***** Great Course, instructor is very thorough and provide quick guidance and clear any doubts promptly with high availability.
! Thanks Abhishek, and Udemy.
***** I am working as Firmware/Embedded engineer, and the courses from this guys are goddamn blessing.
In the real industry, as he mentioned earlier, all network programming or Linux system programming must be implemented with C cuz C is a perfect language for accessing memory spaces and customizing serial communication with other chips.
In the real industrial fields, no one is gonna teach you.
You are the only one who needs to figure it out by yourself cuz everyone wishes you not to excel in workplace.
Only one person can be a manager or supervisor. Take this guy’s courses.
Needless to say, quality guaranteed. If I could do hacking on this site, i am gonna crash his lectures. I do not want other people to get benefits from his lectures.
It would be best if he makes a lecture for “making Operating System from scratch” 🙂
Warning : This course has auto system-generated subtitles which may not be perfect. Please disable subtitles as per your convenience.
0. Setting up Linux Development Environment on your machine
For those who are not familiar with Linux Installation/environment
1. OSI Model Vs TCP/IP Stack
Data Encapsulation and Data Decapsulation
Ingress and egress Journey of packet through a TCP/IP Stack
2. Multi-node setup environment on your machine
Setup Multinode Cluster of Virtual machines on your machine
Local and Remote Subnets
Layer 3 Route Semantics
Configure Layer 3 routes in nodes
Understand L3 Routing table semantics
3. Subnetting and IP address
Differentiate between local and remote subnets
IP Address assignment scheme/policy
Understand MAC addresses and their use
Calculation of Networking ID, Broadcast address and Cardinality of a subnet
Understand the relationship between L3 routers and Subnets
Understand Point-to-Point links
MAC layer and IP rules of packet rejection/acceptance
4. Layer 2 Networking concepts
L3 Router as a gateway to subnet
Protocol Identifier fields at each layer
Ethernet header format
How Ethernet hdr makes L2 routing possible
ARP (Address resolution protocol)
ARP table population and use
Step by Step ARP protocol functioning
Assignment on ARP
Layer2 Switch – How it works
MAC address table
Step by Step description of L2 Switch functioning
Problem of Layer Thrashing
5. Layer 3 Networking concepts
Relationship between Layer2 and Layer3 routing
Explained the dependency of two layers over each other
Configuring Layer 3 routing table
Semantics of a Layer 3 route
Layer 3 route look up
Concept of Longest prefix match
IP Header – fields you should know
Network Layer Operations
Step by Step description of L3 routing routing
Loopback interface – purpose and configuring loopback interface
Exercise on Layer 3 route installation, routing and forwarding of traffic
BroadCast and Collision Domain
6. Virtual LANs (VLANs)
LANs and why they are outdated today
VLANs – The purpose
802.1Q VLAN hdr
Rules of Vlan Tagging
Vlan Aware L2 Switches
Vlan based L2 routing
Other Vlan Benefits
7. Router to Vlan Forwarding
Convept of SVI interfaces
SVI – VLAN Binding
Router to Vlan Forwarding – Step by Step
8. Inter Vlan Routing
Two Step Process
From Src host Machine to Gateway L3 router
From Gateway L3 router to Dst host machine
Exercise and more examples
9. Network troubleshooting tools
How ping works – ICMP protocol description
Networking applications troubleshooting utilities – ping, wireshark, tcpdump
Capturing the packets and examine its contents using tcpdump
10. Transport Layer
Contrasting Layer2, Layer 3 and Layer 4 together
TCP and UDP – Properties of two protocols
TCP Vs UDP
Understanding TCP in Detail
Concept of Headers stacking
Concept of port numbers
Linux System call interface
11. Socket programming concepts
Socket Programming Design
Select System call
Accept System call
Concept of Multiplexing
Server State machine
12. Application Layer
Different ways to implement Sockets
on Top of Transport layer
on Top of Network Layer
on Top of Data link layer
Designing HTTP Webserver from scratch
HTTP Webserver Implementation
Custom application sockets
13. Domain Name System
What is DNS ?
DNS Architecture and Design
Hosting a website
DNS Query types
Recursive DNS Query
Reverse DNS Query
14. IP-in-IP Encapsulation/Tunneling
What is IP-in-IP Encapsulation ?
Why we need IP-in-IP Encapsulation ?
How Encapsulated packet is routed in the network ?
Two scenarios using IP-in-IP Encapsulation
15. Concept of TLVs
What are TLVs
Why we need TLVs
Writing a TLV decoder
Benefits of TLVs in Network communication
STREAMS – Data Structure
TLV (De)Serialization using STREAMS
14 June 2019 – Added Section on TCP
06 Oct 2018 – Added Section 6 On VLANs
07 Sept 2018 – Added Section 11, Domain Name System
13 July 2018 – Added Section 12, IP-in-IP Encapsulation/Tunneling
17 June 2018 – Added Section 10, The Application Layer and HTTP Webserver Design & Implementation
10 June 2018 – Added Section 15, The concept of TLVs
Who this course is for:
UG students, PG Students
Those looking to build a career in Networking Domain
Coding lovers who love to build projects and see things in Action
Those, who want to distinguish themselves from Crowd
Course information :
BestSeller | h264, yuv420p, 1280×720 |ENGLISH, aac, 44100 Hz, stereo | 22h 33 mn | 15.01 GB
Instructor: Abhishek Sagar, Shiwani Nigam
Course Link :
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