Book Image

Managing Mission - Critical Domains and DNS

By : Mark E.Jeftovic
Book Image

Managing Mission - Critical Domains and DNS

By: Mark E.Jeftovic

Overview of this book

Managing your organization's naming architecture and mitigating risks within complex naming environments is very important. This book will go beyond looking at “how to run a name server” or “how to DNSSEC sign a domain”, Managing Mission Critical Domains & DNS looks across the entire spectrum of naming; from external factors that exert influence on your domains to all the internal factors to consider when operating your DNS. The readers are taken on a comprehensive guided tour through the world of naming: from understanding the role of registrars and how they interact with registries, to what exactly is it that ICANN does anyway? Once the prerequisite knowledge of the domain name ecosystem is acquired, the readers are taken through all aspects of DNS operations. Whether your organization operates its own nameservers or utilizes an outsourced vendor, or both, we examine the complex web of interlocking factors that must be taken into account but are too frequently overlooked. By the end of this book, our readers will have an end to end to understanding of all the aspects covered in DNS name servers.
Table of Contents (17 chapters)
7
Types and Uses of Common Resource Records

Nameserver Considerations

In this chapter, we're going to look at various high-level considerations when deploying nameservers.

Whatever you choose here, you will probably be stuck with it for a long, long time. These decisions can come back to haunt you someday when you are under a DDoS attack (see Chapter 14, DNS and DDOS Attacks), are experiencing some other type of cascading failure, or have some reason to migrate a really large number of domains.

We'll look at questions such as anycast versus unicast, and you'll gain an understanding of the advantages of each, and whether you even need to go with anycast.

You'll be taken through numbering-scheme considerations and the concept of nameserver homogeneity versus heterogeneity. In my experience, many of the factors we examine here are frequently overlooked or glossed over.

By the time you've finished this...