View Larger Image	Christian Benvenuti O'Reilly Media, Paperback, Published December 2005, 550 pages, ISBN 0596002556
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• Operating Systems : Linux

• O'Reilly Media

Linux is popular partly because of its efficient and feature-rich network stack. If you've been wondering how Linux carries out the complicated tasks assigned to it by the IP protocols--or if you just want to learn about modern networking through real-life examples--Understanding Linux Network Internals is your guide.

Like the popular O'Reilly book Understanding the Linux Kernel, this book clearly explains the concepts behind system functioning and teaches you how to follow the actual C code that implements it. Although some background in the TCP/IP protocols is helpful, readers can learn a great deal from this text about the protocols themselves and their uses. And having grasped the concepts enumerated in this book, readers with a knowledge of C can use the book's code walk-throughs 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 show you 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.

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 in choosing one solution over another. A large number of flowcharts and other diagrams enhance the book's understandability.

Topics in this book 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

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