uch has changed since the first edition of Firewalls and Internet Security
was published in 1994. For one thing, the Web was still a rather obscure concept for most people at that time, so this edition is nearly a complete rewrite.
This book will teach you how to plan and execute a security strategy that allows easy access to Internet services while defeating even the wiliest of hackers. Firewalls and Internet Security
was written by well-known senior researchers at AT&T Bell Labs, Lumeta, and Johns Hopkins University. You will benefit from their actual, real-world experience maintaining, improving, and redesigning AT&T's Internet gateway.
Download the PDFs of Chapter 2: "A Security Review of Protocols: Lower Layers" and Chapter 3: "Security Review: The Upper Layers"
Reproduced from Firewalls and Internet Security, Repelling the Wily Hacker, 2nd Edition by permission of Addison-Wesley. ISBN 020163466, copyright 2003. All rights reserved.