Preface
This document provides a description of the hardware and functional features contained in
the 4450 FlowThrough™ security processor.
Please refer to the latest Product Release Notes for the tested and released product
features, as well as the known hardware and software errata.
About This Document
This document assumes you are already familiar with the device technology and
terminology.
This document is intended for integrators and application developers responsible for and
familiar with software and hardware architecture of a target system. The datasheet is
primarily used by the hardware design team. Software and applications developers will use
other documents such as the User Manuals and Programming Guides.
Prerequisite
Before proceeding you should generally understand:
• Software and hardware of the target system
• General networking concepts
• General IPsec security concepts
Document Organization
This document is organized as follows:
Chapter 1, “4450 Product Description” provides an introduction/overview of the 4450
Security Processor.
Chapter 2, “Features” provides a generalized summary of the key features and functionality
of the 4450.
Chapter 3, “Performance Summary” defines the 4450 supported performance parameters.
Chapter 4, “4450 Operation” presents a detailed description of the 4450 internal features
and data flow through the device.
Chapter 5, “Host Messaging and System Configuration” contains the following: 4450
Messaging, Packet Fragmentation/Reassembly, Security Policy/SADB Management,
Exception handling and System Boot.
4450 – Data Sheet, DS-0131-06
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Hifn Confidential
EXAR [ EXAR CORPORATION ]
