User`s guide

Chapter 1 Introduction ■ 7
Chapter 1 Introduction
This chapter provides an overview of the Barracuda Spam Firewall and includes the following topics:
■ Overview (on this page).
■ Barracuda Spam Firewall Models (page 10).
■ Technical Support (page 10).
■ Warranty Policy (page 10).
■ Locating Information in this Document (page 11).
Overview
The Barracuda Spam Firewall is an integrated hardware and software solution that provides powerful
and scalable spam and virus-blocking capabilities that do not bog down your email servers. The system
has no per-user license fee and can scale to support tens of thousands of active email users.
Using the web-based administration interface, you can configure up to ten defense layers that protect
your users from spam and viruses. The ten defense layers are:
■ Denial of service and security protection
■ IP block list
■ Rate control
■ Virus check with archive decompression
■ Proprietary virus check
■ User-specified rules
■ Spam fingerprint check
■ Intention analysis
■ Bayesian analysis
■ Rule-based spam scoring