Network Flow Analysis teaches the busy network administrator how to build every component of a flow-based network awareness system, and how network analysis and auditing can help address problems and improve network reliability.
The TCP/IP Guide is a must-have addition to the libraries of internetworking students, educators, networking professionals, and those working toward certification.
If you're responsible for keeping a network secure, you'll find Linux Firewalls invaluable in your attempt to understand attacks and to detect and even prevent compromises.
Nagios is robust but also complex, and Nagios: System and Network Monitoring, 2nd Edition, updated to address Nagios 3.0, will help you take full advantage of this program.
Cisco Routers for the Desperate, 2nd Edition is designed to be read once and left alone until something breaks. When it does, you'll have everything you need to know in one easy-to-follow guidebook.