The authors of this book have been engaged in the teaching and application development of Linux network management. Consisting of 15 chapters, this book chiefly covers such contents as basic knowledge of network management, installation of Red Hat Linux, Linux disk file management, management of users and user groups, Linux services and process management, package management, configuration network connection, configuration of DNS server, configuration of DHCP server, configuration of FTP server, configuration of NFS server, configuration of Web server, configuration of mail server, configuration of firewall and configuration of proxy server. The book can be used as a textbook for vocational college and also a reference book for Linux network administrators.