Ubuntu 9. 04: System Administration and Security

This book is designed as an administration and security reference. Administration tools are covered as well as the underlying configuration files and system implementations. The emphasis is on what administrators will need to know to perform key administration and security tasks. The book is organized into four parts: system administration, security, and file system and device management, and shell use and configuration. System administration covers software installation and update, user management, start up and service management using Upstart, kernel configuration, virtualization, system logs, and shell configuration. Security includes PolicyKit authorization, encryption, SSH, SE Linux, firewalls. Device and file system management topics cover udev, the Hardware Abstraction Layer (HAL), LVM, RAID, and backups. The ebook version features hyper-linked overview, contents, index, chapters, sections, and Web sites.