Book Image

CentOS 7 Linux Server Cookbook - Second Edition

By : Jonathan Hobson
Book Image

CentOS 7 Linux Server Cookbook - Second Edition

By: Jonathan Hobson

Overview of this book

This book will provide you with a comprehensive series of starting points that will give you direct access to the inner workings of the latest CentOS version 7 and help you trim the learning curve to master your server. You will begin with the installation and basic configuration of CentOS 7, followed by learning how to manage your system, services and software packages. You will then gain an understanding of how to administer the file system, secure access to your server and configure various resource sharing services such as file, printer and DHCP servers across your network. Further on, we cover advanced topics such as FTP services, building your own DNS server, running database servers, and providing mail and web services. Finally, you will get a deep understanding of SELinux and you will learn how to work with Docker operating-system virtualization and how to monitor your IT infrastructure with Nagios. By the end of this book, you will have a fair understanding of all the aspects of configuring, implementing and administering CentOS 7 Linux server and how to put it in control.
Table of Contents (22 chapters)
CentOS 7 Linux Server Cookbook Second Edition
About the Authors
About the Reviewer

Setting up an authoritative-only DNS server

In this recipe, we will learn how to create an authoritative-only DNS server, which can give answers to queries about domains under their control themselves instead of redirecting the query to other DNS servers (such as our caching-only DNS server from the previous recipe). We will create a DNS server to resolve all our own hostnames and services in our own private local network.

As said before, while Unbound should be your first choice when needing a caching-only DNS server as it is the most secure DNS server solution available, it has only limited authoritative capabilities which often is not enough for professional DNS server usage. Here, instead of name lookup of our local servers, we will use the popular authoritative BIND DNS server package and configure a new DNS zone to provide highly customizable name resolution. Technically speaking, we will be writing both a forward and reverse zone file for our domain. Zone files are text files that...