Book Image

Mastering Active Directory

By : Dishan Francis
Book Image

Mastering Active Directory

By: Dishan Francis

Overview of this book

Active Directory is a centralized and standardized system that automates networked management of user data, security, and distributed resources and enables interoperation with other directories. If you are aware of Active Directory basics and want to gain expertise in it, this book is perfect for you. We will quickly go through the architecture and fundamentals of Active Directory and then dive deep into the core components, such as forests, domains, sites, trust relationships, OU, objects, attributes, DNS, and replication. We will then move on to AD schemas, global catalogs, LDAP, RODC, RMS, certificate authorities, group policies, and security best practices, which will help you gain a better understanding of objects and components and how they can be used effectively. We will also cover AD Domain Services and Federation Services for Windows Server 2016 and all their new features. Last but not least, you will learn how to manage your identity infrastructure for a hybrid-cloud setup. All this will help you design, plan, deploy, manage operations on, and troubleshoot your enterprise identity infrastructure in a secure, effective manner. Furthermore, I will guide you through automating administrative tasks using PowerShell cmdlets. Toward the end of the book, we will cover best practices and troubleshooting techniques that can be used to improve security and performance in an identity infrastructure.
Table of Contents (20 chapters)

How DNS works

DNS-related service tickets are common in any helpdesk. Some of them can be easily fixed with simple DNS flush (ipconfig /flushdns), and some may require DNS server level troubleshooting. Even if the DNS issues are small or critical, it is important to know how DNS works in order to troubleshoot any DNS-related issue.

A few days ago, I posted a birthday card to my mother, who lives in Sri Lanka. I posted it from the local post office in Kingston upon Thames, England. Once I put it inside the post box, the delivery process started, and now it was the postal service's responsibility to deliver it to the correct person. So, the local post office worker who picked up my letter, did he/she know my parents' house location exactly? No, they don't, but at the end of my address, it said the country was Sri Lanka. They then knew that if this letter goes to Sri...