Up until now, Linux administration books have focused on the management of a single server. This is the first Linux administration guide specifically focused on the needs of administrators working in production/enterprise environments that may consist of hundreds or even thousands of servers which must be managed centrally to deliver optimal availability and performance. The book contains extensive coverage of Linux security; working with drivers and the kernel; TCP/IP networking; routing; network hardware; and NFS configuration. It also presents comprehensive, step-by-step guidance for configuring and managing email with sendmail; network management and debugging; using Linux in Web hosting environments; automating administration with daemons; and integrating with Windows clients and servers.