December 2005
Intermediate to advanced
1066 pages
33h 38m
English
Content preview from Understanding Linux Network InternalsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Part V. Internet Protocol Version 4 (IPv4)
The Linux kernel supports many Layer three (L3) protocols, such as AppleTalk, DECnet, and IPX, but this book talks just about the one that dominates modern networking: IP. While IPv4 will be described in detail, IPv6 will be only briefly mentioned as needed. I will not spend much time on the theory behind these protocols, with which you should be somewhat familiar, but I will describe the implementation in Linux. I will focus on aspects of the design that are not obvious or that differ substantially from other operating systems. I will also explain the main drawbacks of version 4 of the IP protocol and show how IPv6 tries to address them. Therefore, while there is both some background theory and some code, I expect the reader to be familiar with the basic IP protocol behavior. Here is what is covered in each chapter:
- Chapter 18, Internet Protocol Version 4 (IPv4): Concepts
Introduces the major tasks of the IP layer, and the strategies used.
- Chapter 19 Internet Protocol Version 4 (IPv4): Linux Foundations and Features
Shows how the IP-layer reception routine processes ingress packets, and how IP options are taken care of.
- Chapter 20 Internet Protocol Version 4 (IPv4): Forwarding and Local Delivery
Shows how ingress IP packets are delivered locally to the L4 protocol handler, or are forwarded when the destination IP address does not belong to the local host but the host has enabled forwarding.
- Chapter 21 Internet Protocol Version 4 (IPv4): ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.