... efficiently, or on the other hand youcan underestimate the demands on the network, resulting in one or more machinesslowing down to near uselessness.14 Part I: Red Hat Linux System and Network Administration ... set up a firewall and let Linux handle Web, FTP, and mailservice. History has shown that Linux is more secure in its fundamental architec-ture, but beyond that, there are thousands of eyes constantly ... administrator◆Installing and configuring servers◆Installing and configuring application software◆Creating and maintaining user accounts◆Backing up and restoring files◆Monitoring and tuning performance◆Configuring...