Joseph Davies (of the Windows Server Networking team and also known as the Cable Guy) has recently released a new online book entitled TCP/IP Fundamentals for Microsoft Windows that is available on Technet.
From Joseph’s posting on the server networking newsgroup:
This online book is a structured, introductory approach to the basic
concepts and principles of the Transmission Control Protocol/Internet
Protocol (TCP/IP) protocol suite, how the most important protocols function,
and their basic configuration in the Microsoft® Windows Server® 2003 and
Windows® XP operating systems. This online book is available for free and provides a central location for
an existing or aspiring Windows network administrator to get a comprehensive
view of TCP/IP protocols and services in Windows XP and Windows Server 2003.
Unlike many other introductory TCP/IP book, this book provides an integrated
discussion of both Internet Protocol version 4 (IPv4) and Internet Protocol
version 6 (IPv6).