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  • Book Overview & Buying Learning RHEL Networking
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Learning RHEL Networking

Learning RHEL Networking

By : Andrew Mallett
4.3 (4)
Buy this Book
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Learning RHEL Networking

Learning RHEL Networking

4.3 (4)
By: Andrew Mallett
Buy this Book

Overview of this book

This book is ideal for administrators who need to learn the networking abilities of Red Hat Enterprise Linux 7. You may not be a Linux administrator already, but you will need to be able to test files in Linux and navigate the filesystem.
Table of Contents (13 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Introducing Enterprise Linux 7
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1. Introducing Enterprise Linux 7
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Red Hat Enterprise Linux
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CentOS
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Fedora
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Determining your distribution and version
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Summary
2
2. Configuring Network Settings
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2. Configuring Network Settings
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Elevating privileges
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Using ip and hostnamectl
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Introduction to the Red Hat NetworkManager
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Interacting with the NetworkManager using the Control Center
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Adding a new profile with the Control Center
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Interacting with the NetworkManager using nmtui
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Extreme interaction with NetworkManager using nmcli
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Summary
3
3. Configuring Key Network Services
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3. Configuring Key Network Services
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Domain Name System
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Configuring a DHCP server
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Configuring time services on RHEL 7
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Implementing e-mail delivery on RHEL 7
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Summary
4
4. Implementing iSCSI SANs
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4. Implementing iSCSI SANs
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The iSCSI target (server)
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Managing logical volumes with LVM
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Installing the targetd service and targetcli tools
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Managing iSCSI targets with targetcli
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Creating iSCSI targets
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Working with the iSCSI Initiator
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Summary
5
5. Implementing btrfs
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5. Implementing btrfs
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Overview of btrfs
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Overview of the lab environment
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Installing btrfs
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Creating the btrfs filesystem
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The Copy-On-Write technology
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Resizing btrfs filesystems
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Adding devices to the btrfs filesystem
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Balancing the btrfs filesystem
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Mounting multidisk btrfs volumes from /etc/fstab
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Using btrfs snapshots
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Optimizing btrfs for solid state drives
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Managing snapshots with snapper
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Summary
6
6. File Sharing with NFS
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6. File Sharing with NFS
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An overview of NFS
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Overview of the lab environment
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The NFS server configuration
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Using exportfs to create temporary exports
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Hosting NFSv4 behind a firewall
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Hosting NFSv3 behind a firewall
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Auto-mounting NFS with autofs
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Summary
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7. Implementing Windows Shares with Samba 4
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7. Implementing Windows Shares with Samba 4
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An overview of Samba and Samba services
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An overview of the lab environment
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Configuring time and DNS
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Managing Samba services
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The Samba client on RHEL 7
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Configuring file shares in Samba
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Troubleshooting Samba
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Summary
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8. Integrating RHEL 7 into Microsoft Active Directory Domains
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8. Integrating RHEL 7 into Microsoft Active Directory Domains
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Overview of identity management
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An overview of the lab environment
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Preparing to join an Active Directory domain
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Using realm to manage domain enrolment
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Logging on to RHEL 7 using Active Directory credentials
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User and group management with adcli
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Delegating Active Directory accounts with sudo
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Leaving a domain
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Understanding Active Directory as an identity provider for sssd
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Summary
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9. Deploying the Apache HTTPD Server
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9. Deploying the Apache HTTPD Server
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Configuring the httpd service
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Controlling the Apache web service
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Loading modules
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Virtual servers
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Automating virtual hosts
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Summary
10
10. Securing the System with SELinux
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10. Securing the System with SELinux
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What is SELinux
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Understanding SELinux
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Working with the targeted policy type
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SELinux tools
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Troubleshooting SELinux
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Summary
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11. Network Security with firewalld
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11. Network Security with firewalld
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The firewall status
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Routing
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Zone management
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Source management
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Firewall rules using services
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Firewall rules using ports
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Masquerading and Network Address Translation
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Using rich rules
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Implementing direct rules
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Summary
12
Index
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Index

Domain Name System

Domain Name System (DNS) servers help us to resolve friendly computer names, such as www.packtpub.com, to a less human-friendly IP address, such as 83.166.169.231. In this way, mere humans can access many computer systems by guessing the address or the DNS name. In the early days of UNIX computers, where access was limited to a few academic systems, hostnames were distributed by Network Information Service (NIS); a central computer maintained a single file that mapped hostnames to IP addresses. This file was then pushed out to client subscribers. Although this worked, it was clearly not scalable.

In 1988, the first release of the DNS server was developed by four graduates from UCB (the University of California, Berkeley). This software in now maintained by the ISC (Internet Systems Consortium). Even today, it's still known as Berkeley Internet Name Domain (BIND).

On Red Hat Enterprise Linux 7.1, the version of the DNS server or bind that is shipped is 9.9.4. Once...

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