windows server 2008 networking & network access protection (nap)

[...]... developer in the Windows Core Networking Group ■ Sean Siler, an IPv6 program manager in the Windows Core Networking Group ■ Santosh Chandwani, the lead program manager in the Enterprise Networking Group ■ Ian Hameroff, the senior product manager in Security and Access Product Marketing ■ Gabe Frost, the product manager of Windows Core Networking ■ Rade Trimceski, the program manager of the Windows Networking. .. 561 Part IV 14 Network Access Protection Infrastructure Network Access Protection Overview 565 The Need for Network Access Protection 565 Malware and Its Impact on Enterprise Computing 565 Preventing Malware on Enterprise Networks 567 A05T624221.fm Page... C01624221.fm Page 8 Wednesday, December 5, 2007 4:54 PM 8 Windows Server 2008 Networking and Network Access Protection (NAP) Note APIPA addresses should never have a default gateway because APIPA is designed to function only on a single subnet Computers with APIPA IP addresses will regularly attempt to contact a DHCP server in case a DHCP server is brought online after the client computer starts Multicast... book or the companion CD, please send them to Microsoft Press by using either of the following methods: E-mail: mspinput@microsoft.com Postal Mail: Microsoft Press Attn: Windows Server 2008 Networking and Network Access Protection (NAP) Editor One Microsoft Way Redmond, WA 98052-6399 For additional support information regarding this book and the CD-ROM (including answers to commonly asked questions... IPv4 networks Most of the information in this chapter applies equally to the Windows Server 2008, Windows Vista, and Windows Server 2003 operating systems and other recent versions of Windows For information about IPv6, refer to Chapter 2, “IPv6.” This chapter assumes that you have a general understanding of TCP/IP and some networking experience Concepts This section provides a brief overview of important... focuses on IPv4, a Layer 3 protocol, but also discusses how IPv4 interacts with Layer 2 and Layer 4 protocols 3 C01624221.fm Page 4 Wednesday, December 5, 2007 4:54 PM 4 Windows Server 2008 Networking and Network Access Protection (NAP) IPv4 Addressing IPv4 addresses are four bytes, for a total length of 32 bits (One byte equals eight bits.) Each byte (known as an octet) is written as a decimal number... 192.168.10.64–192.168.10.127 192.168.10.128/26 192.168.10.128–192.168.10.191 192.168.10.192/26 192.168.10.192–192.168.1.255 C01624221.fm Page 6 Wednesday, December 5, 2007 4:54 PM 6 Windows Server 2008 Networking and Network Access Protection (NAP) How It Works: Binary Math Although IP addresses are expressed in decimal octets, you must use binary math (also known as Boolean math) if you want to use anything other... area network (LAN), such as an ad-hoc wireless network, without a DHCP server or static IP address configuration If a computer has an APIPA IP address on a network that has a DHCP server, it means that the computer could not contact the DHCP server Either the computer is not properly connected to the network, or the DHCP server was offline C01624221.fm Page 8 Wednesday, December 5, 2007 4:54 PM 8 Windows. .. unflagging energy and tireless commitment to making this book a success —Joseph and Tony A07I624221.fm Page xxv Wednesday, December 5, 2007 4:53 PM Introduction Welcome to Windows Server 2008 Networking and Network Access Protection (NAP) You can use the deployment guidelines in Part I of this book to build an addressing and packet flow infrastructure that uses Internet Protocol version 4 (IPv4) and... number of bits in the network address after the IP address For example, a 24-bit subnet mask could be written as 192.168.10.0/24 If you wanted to subdivide that network into four smaller networks, you could use a 26-bit network address (leaving only 6 bits for the host address) The four networks would be written as shown in Table 1-2 Table 1-2 Subdividing the 192.168.10.0/24 Network Network ID IP Address . 499 Part IV Network Access Protection Infrastructure 14 Network Access Protection Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 565 15 Preparing for Network Access Protection 561 Part IV Network Access Protection Infrastructure 14 Network Access Protection Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 565 The Need for Network Access Protection. Directory, ActiveX, Internet Explorer, MSDN, Outlook, SQL Server, Visual Basic, Visual Studio, Windows, Windows Media, Windows Server, and Windows Vista are either registered trademarks or trademarks