books:

	Understanding Linux Network Internals Christian Benvenuti O'Reilly Media, Inc., 2005 - 1062 pages average customer review:based on 4 reviews view larger image
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Like the popular O'Reilly book, "Understanding the Linux Kernel," this book clearly explains the underlying concepts and teaches you how to follow the actual C code that implements it. Although some background in the TCP/IP protocols is helpful, you can learn a great deal from this text about the protocols themselves and their uses. And if you already have a base knowledge of C, you can use the book's code walkthroughs to figure out exactly what this sophisticated part of the Linux kernel is doing.

Part of the difficulty in understanding networks -- and implementing them -- is that the tasks are broken up and performed at many different times by different pieces of code. One of the strengths of this book is to integrate the pieces and reveal the relationships between far-flung functions and data structures. "Understanding Linux Network Internals" is both a big-picture discussion and a no-nonsense guide to the details of Linux networking. Topics include:

Key problems with networking

Network interface card (NIC) device drivers

System initialization

Layer 2 (link-layer) tasks and implementation

Layer 3 (IPv4) tasks and implementation

Neighbor infrastructure and protocols (ARP)

Bridging

Routing

ICMP

Author Christian Benvenuti, an operating system designer specializing in networking, explains much more than how Linux code works. He shows the purposes of major networking features and the trade-offs involved inchoosing one solution over another. A large number of flowcharts and other diagrams enhance the book's understandability.

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The best Linux networking software book to start with

I have read a number of books on the TCP/IP protocols and their implementations; both the original Berkeley (BSD) Unix TCP/IP stack and the Linux TCP/IP stack. I must say that this is the best of all of them. This book makes the subject very approachable for the newcomer to network protocol software but the explanations are detailed enough to satisfy an old dog like me. Benvenuti's writing style is clear and very readable. He liberally provides diagrams to illustrate the concepts he is discussing.

My only fault with the book is that the transport layer protocols (UDP and TCP) are not covered. Benvenuti provides a list of important areas of the networking software that are not covered in the book but gives other references for most of these. I hope that he is working on a volume 2 to cover these areas.

I would sum up by saying that if you want to learn about the Linux networking software or network protocol software in general, start with this book. This book will give you the background to understand other, less well written books that cover the remaining networking software topics.

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TAKE THE LINUX NETWORK TOUR!

Are you a newcomer who already has some knowledge of networking? If you are, then this book is for you! Author Christian Benvenuti, has done an outstanding job of writing practical guide that represents a good starting point for anyone willing to learn more about the Linux kernal internals.

Benvenuti, begins by introducing you to the basic knowledge you need to understand the rest of the book comfortably. Then, the author will show you how and when network devices are initialized and registered with the kernal. He also puts into context all of the features that can influence the path of a packet inside the kernal, and to give you an idea of the big picture. Next, he looks at the link layer or L2 counterpart of routing: bridging. The author continues by explaining the main drawbacks of version 4 of the IP protocol and shows you how IPv6 tries to address them. He also discusses how the router and the application host know who each other are. Finally, he introduces the routing process, and how it plays a central role in the Linux networking code.

In this most excellent book, the author shows you how Linux carries out the complicated tasks assigned to it by the IP protocols. More importantly, one of the strengths of this book is that it integrates the pieces and shows you the relationships between far flung functions and data structures.

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Broad coverage

This is a wonderful book to understanding how the linux networking code works. Good coverage of networking code for a beginner-developer to grasp.

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recommendations

Recommended LINUX / UNIX OS,Internals & Device Driver books (Kaiwan)
Books for writing network software
Start hacking the Linux kernel
Internals of Operating System
Linux / Unix Essentials

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