Although the writer Tony Bourke including fair bit of good information on configuring four commercial load-balancing solution, the most valuable part of his work is his high-level discussion of how load balancing fit into a larger network environment, and an explanation of the relative benefits of alternative approaches to problem. Comparison of flat-based solution with a design based on Network Address Translation (NAT) is part of the value of this book; subsequent appeal took the form of dozens of network diagrams a typical working document solutions. Bourke demonstrate familiarity with the design constraints in real life to documenting various load-balancing solutions and show what each can do for the organization - he showed that a host-based solution that implements the balancing NAT can double as a firewall, so save some money will be needed for specialized security devices.