Firebox Vclass User Guide 59
CHAPTER 4 Firebox Vclass Basics
This chapter provides an overview of the Firebox
Vclass hardware and the companion Vcontroller soft-
ware.
What is a Firebox Vclass Appliance?
Every Firebox Vclass appliance is a combination of
powerful network-monitoring hardware and software
policies that you, the administrator, set up and main-
tain. With every incoming or outgoing data stream
that it detects, the appliance performs a two-stage
task:
• It analyzes the initial packet for key traffic
specifications, including source, destination, type
of service, and specific appliance interface used by
the data stream.
• If the data matches all the specifications
established in a given policy, the appliance takes
action–directing that packet and the stream that
follows to the desired destination. It can also block
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