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Beej's Guide to Network Concepts

Brian “Beej Jorgensen” Hall

v1.0.19, Copyright © November 23, 2023

1 Foreword
2 Networking Overview
3 Introducing The Sockets API
4 The Layered Network Model
5 Project: HTTP Client and Server
6 The Internet Protocol (IP)
7 The Internet Protocol version 4
8 The Internet Protocol version 6
9 Project: A Better Web Server
10 Endianess and Integers
11 Parsing Packets
12 Project: Atomic Time
13 Project: The Word Server
14 Transmission Control Protocol (TCP)
15 User Datagram Protocol (UDP)
16 Project: Validating a TCP Packet
17 IP Subnets and Subnet Masks
18 IP Routing
19 Project: Computing and Finding Subnets
20 The Link Layer and Ethernet
21 ARP: The Address Resolution Protocol
22 Project 6: Routing with Dijkstra’s
23 Project: Sniff ARP packets with WireShark
- 23.1 What to Create
- 23.2 Step by Step
24 Network Hardware
- 24.1 Terminology and Components
- 24.2 Reflect
25 Project: Packet Tracer: Connect Two Computers
26 Project: Packet Tracer: Using a Switch
27 Project: Packet Tracer: Using a Router
28 Project: Packet Tracer: Multiple Routers
29 Select
30 Project: Using Select
31 Domain Name System (DNS)
32 Network Address Translation (NAT)
33 Dynamic Host Configuration Protocol (DHCP)
- 33.1 Operation
- 33.2 Reflect
34 Project: Digging DNS Info
35 Port Scanning
- 35.1 Mechanics of a Portscanner
  - 35.1.1 Portscanning UDP
- 35.2 Reflect
36 Firewalls
37 Trusting User Data
38 Project: Port Scanning
39 Project: Multiuser Chat Client and Server
40 Appendix: Bitwise Operations
41 Appendix: Installing Packet Tracer
- 41.1 Download Packet Tracer
- 41.2 Run Packet Tracer
42 Appendix: Multithreading
43 Appendix: JSON

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