This book covers the inexorable exhaustion of the IPv4 address space, the interim fix to this based on Network Address Translation (NAT) and Private Addresses, and the differences between IPv4 and IPv6. It will help you understand the limitations and problems introduced by the use of NAT and introduce you to the far simpler network and software designs possible, using a larger, unified address space. IPv6, a mature and viable replacement for IPv4, is currently used by more than 36% of all global Internet traffic. Wireless telephone service providers in many countries have migrated their networks to IPv6 with great success. The elimination of NAT and Private Addresses has vastly simplified network design and implementation. Further, there are now enough public addresses allocated to accommodate all anticipated uses for the foreseeable future. Most networking products and software, especially open-source software, are already fully IPv6 compliant. Today, no business should purchase obsolete products that support only IPv4. The global IPv6 Forum estimates that there are millions of networking professionals still needing to learn the fundamentals of IPv6 technologies to move forward. This book is for them. With plans in place for a shutdown of IPv4 on global networks ("Sunset IPv4") the time to learn is now. If you want a job in IT, especially network hardware or software, and you don't know IPv6, you are already obsolete. What You Will Learn This book serves as a guide to all relevant Internet Engineering Task Force (IETF) standards Request for Comments (RFCs), organized by topic and discussed in plain language Understand how IPv6 makes viable technologies such as multicast (for efficient global audio/video streaming), IPsec VPNs (for better security), and simpler VoIP Take "edge computing" to the limit by eliminating intermediary servers made necessary by IPv4 NAT-for example, making connections directly from my node to yours Discover how organizations can introduce IPv6 into existing IPv4 networks ("Dual Stack"), and then eliminate the legacy IPv4 aspects going forward ("Pure IPv6") for the mandates going into place now (for example, US DoD requirements to move all networks to Pure IPv6) Recognize that 5G networking (the Grand Convergence of conventional networks and wireless service) depends heavily on the advanced features IPv6 Who This Book Is For Networking professionals. Readers should have at least some familiarity with the precursor protocol (IPv4) and legacy TCP/IP based networks. Some knowledge of network models, such as DoD four-layer model or OSI 7-layer model, is helpful to understand where the Internet Protocol fits into the larger picture. For network software developers using the Sockets API (in UNIX, Windows, etc.), this book will help you to understand the extensions to that API needed to work with IPv6.

In order to deploy and use Microsoft Certificate Services, you need to understand the fundamentals of cryptography, digital signatures, encryption, TLS, and S/MIME. It is also important to understand the concepts behind public key infrastructure (PKI). This book teaches you all the required background knowledge you need. Then it takes you deeper, step by step, teaching you how to deploy Certificate Services and configure it to issue various digital certificate types, complete with examples of using these certificates with IIS, Outlook, and Windows. Microsoft-based networks-on-premises, hybrid, and cloud-based networks-are used in companies of all sizes. Within them, there are many applications of digital certificates that can be created and managed by Microsoft Certificate Services. As security is more important than ever, and cryptography and PKI are fundamental to so many of these defenses, understanding Microsoft Certificate Services is becoming an increasingly more desirable skill. Most IT workers don't realize the many uses and purposes of Certificate Services, especially within a corporate or government agency network, and how tightly integrated they are with the Microsoft Windows Domain style of networks and Active Directory (on-premises or cloud-based, including Azure, AWS, and Google Cloud Services). This book will teach you the gamut. You will appreciate the learning approach presented in the book, beginning with the basics (cryptographic primitives such as encryption and message digests), getting into combinations of primitives to accomplish specific things (such as digital signatures and envelopes), and then trying real-word systems based on digital certificates and PKI (such as TLS, S/MIME secure email, cryptographic authentication, and more). The book wraps it all up and teaches you how to deploy Certificate Services and issue the various types of certificates, including how they are used. What You Will Learn Understand basic cryptography (symmetric and asymmetric key encryption, message digests, and digital signatures and envelopes) Know how TLS, S/MIME, and cryptographic authentication work Discover applications of cryptography related to secure servers with TLS and cryptographic (passwordless) authentication to online services including Windows and secure email Get to know the common types of digital certificates, how to create and manage them, and examples of their use with IIS, Outlook, etc. Who This Book Is For Microsoft system and network engineers, security engineers, and CISOs. Readers should have familiarity with Windows Server 2019 (or more recent) and Active Directory.