You must be able to simulate traffic from 100 s of hosts. Perform benchmarking experiments, and adjust the firewall framework as necessary. More devices can be made available for fixed duration. Once the basic parallel firewall framework is up and running, examine the following extensions Device fault tolerance . If one device stops working, redirect the traffic to the other devices.
Re-run the benchmarks and determine the performance impact of various degrees of failure.
Dynamic traffic load balancing . Traffic distribution changes over time. If you rely purely on a static traffic division, some devices may be under-utilized. Consider addressing other features in this framework .