Manage complex systems with ease and equip yourself for a new career. This book builds upon the skills you learned in Volumes 1 and 2 of this course and it depends upon the virtual network and virtual machine you created there. However, more experienced Linux users can begin with this volume and download an assigned script that will set up the VM for the start of Volume 3. Instructions with the script will provide specifications for configuration of the virtual network and the virtual machine. Refer to the volume overviews in the book's introduction to select the volume of this course most appropriate for your current skill level. Start by reviewing the administration of Linux servers and install and configure various Linux server services such as DHCP, DNS, NTP, and SSH server that will be used to provide advanced network services. You’ll then learn to install and configure servers such as BIND for name services, DHCP for network host configuration, and SSH for secure logins to remote hosts. Other topics covered include public/private keypairs to further enhance security, SendMail and IMAP and antispam protection for email, using Apache and WordPress to create and manage web sites, NFS, SAMBA, and Chrony. This volume also covers SELinux, and building RPMs to distribute automation scripts. All of these services are installed on a single server host over the course of the book and by the time you are finished you will have a single server that provides these services for your network. What You Will Learn:
• Install, configure, and manage several Linux server services such as email with spam management and single and multiple web sites
• Work with NTP time synchronization, DHCP, SSH, and file sharing with Unix/Linux and Windows clients
• Create RPMs for distribution of scripts and administrative programs.
• Understand and work with enhanced security.

Who This Book Is For: Those who are already Linux power users – SysAdmins who can administer Linux workstation hosts that are not servers – who want to learn to administer the services provided by Linux servers such as web, time, name, email, SSH, and more. Source Code Repo: https://github.com/Apress/using-and-administering-linux-volume-3

轻松地管理复杂的系统，为自己的新事业做好准备。本书建立在你在本课程第一卷和第二卷中所学到的技能之上，它取决于你在那里创建的虚拟网络和虚拟机。然而，更有经验的Linux用户可以从本卷开始，下载一个指定的脚本，为第三卷的开始设置虚拟机。脚本的说明将提供虚拟网络和虚拟机的配置规范。请参考本书介绍中的卷概述，选择最适合您当前技能水平的本课程的卷。首先回顾Linux服务器的管理，安装和配置各种Linux服务器服务，如DHCP，DNS，NTP和SSH服务器，这些服务将用于提供高级网络服务。然后你将学习安装和配置服务器，如用于名称服务的BIND，用于网络主机配置的DHCP，以及用于安全登录远程主机的SSH。涵盖的其他主题包括进一步增强安全性的公钥/私钥对、SendMail和IMAP以及电子邮件的反垃圾邮件保护、使用Apache和WordPress来创建和管理网站、NFS、SAMBA和Chrony。本卷还包括SELinux，以及构建RPM来分发自动化脚本。在本书的过程中，所有这些服务都安装在一台服务器主机上，当你完成后，你将拥有一台为你的网络提供这些服务的服务器。你将学到什么？

- 安装、配置和管理几个Linux服务器服务，如带有垃圾邮件管理的电子邮件以及单个和多个网站。

- 使用NTP时间同步、DHCP、SSH，以及与Unix/Linux和Windows客户共享文件。

- 创建用于分发脚本和管理程序的RPM。

- 理解并使用增强的安全性。

本书适用于谁。那些已经是Linux强力用户的人--能够管理不是服务器的Linux工作站主机的SysAdmins--想要学习管理Linux服务器提供的服务，如网络、时间、名称、电子邮件、SSH，等等。源代码 Repo: https://github.com/Apress/using-and-administering-linux-volume-3