Book Image

CentOS 7 Server Deployment Cookbook

By : Timothy Boronczyk, IRAKLI NADAREISHVILI
Book Image

CentOS 7 Server Deployment Cookbook

By: Timothy Boronczyk, IRAKLI NADAREISHVILI

Overview of this book

CentOS is derived from Red Hat Enterprise Linux (RHEL) sources and is widely used as a Linux server. This book will help you to better configure and manage Linux servers in varying scenarios and business requirements. Starting with installing CentOS, this book will walk you through the networking aspects of CentOS. You will then learn how to manage users and their permissions, software installs, disks, filesystems, and so on. You’ll then see how to secure connection to remotely access a desktop and work with databases. Toward the end, you will find out how to manage DNS, e-mails, web servers, and more. You will also learn to detect threats by monitoring network intrusion. Finally, the book will cover virtualization techniques that will help you make the most of CentOS.
Table of Contents (18 chapters)
CentOS 7 Server Deployment Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Setting up BIND as a resolving DNS server


This recipe teaches you how to set up a resolving DNS server using BIND. Domain Name Service (DNS) is the unsung workhorse of the Internet, which translates memorable names such as facebook.com and google.com to IP addresses such as 172.217.18.238 and 31.13.76.68.

Communication across the Internet uses IP addresses to identify systems, but numbers are hard for people to remember. For example, it's easier for us to remember google.com than 172.217.18.238 (or the IPv6 address 2607:f8b0:4006:80e::200e). So, when you type google.com in your browser's address bar, your system queries a DNS server to resolve the name to its IP address and then requests the page from the web server at that address. When you write an e-mail, a DNS server retrieves the IP address of the recipient's mail server before the message is sent.

A resolving DNS server maintained by your service provider is probably the first server to receive such lookup requests and it will respond...