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Barracuda Spam Firewall
User’s Guide
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Strany 1 - User’s Guide

1Barracuda Spam Firewall User’s Guide

Strany 2 - Copyright

Barracuda Spam Firewall Models10 Barracuda Spam Firewall User’s GuideBarracuda Spam Firewall ModelsThe Barracuda Spam Firewall comes in four models.

Strany 3 - Contents

Chapter 1 Introduction 11Locating Information in this DocumentLocating Information in this DocumentRefer to the following table to locate informati

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Locating Information in this Document12 Barracuda Spam Firewall User’s GuideADVANCED TabEmail Protocol Checking Setting Email Protocol Checking on pa

Strany 5 - Contents ■ 5

Chapter 2 Setting Up the Barracuda Spam Firewall 13Chapter 2 Setting Up the Barracuda Spam FirewallTo set up your Barracuda Spam Firewall, follow t

Strany 6

Setting the System IP Address14 Barracuda Spam Firewall User’s GuideSetting the System IP AddressThe Barracuda Spam Firewall is given a default IP ad

Strany 7 - Introduction

Chapter 2 Setting Up the Barracuda Spam Firewall 15Configuring the Barracuda Spam Firewall3. Go to the BASIC-->IP Configuration page and enter t

Strany 8 - Overview

Configuring your Corporate Firewall and Updating Firmware16 Barracuda Spam Firewall User’s Guide5. Go to the BASIC-->Administration page and do th

Strany 9 - Understanding Spam Scoring

Chapter 2 Setting Up the Barracuda Spam Firewall 17Routing your Incoming Email by Modifying MX Records3. Upgrade the firmware on the Barracuda Spam

Strany 10 - Warranty Policy

Installation Examples18 Barracuda Spam Firewall User’s GuideInstallation ExamplesThis section provides example installation types you can reference t

Strany 11

Chapter 2 Setting Up the Barracuda Spam Firewall 19Installation ExamplesBarracuda Spam Firewall in Front of Corporate FirewallThe figure below show

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2 Barracuda Spam Firewall User’s GuideCopyrightCopyright 2004, Barracuda Networkswww.barracudanetworks.comAll rights reserved. Use of this product a

Strany 13

Installation Examples20 Barracuda Spam Firewall User’s Guide

Strany 14 - Setting the System IP Address

Chapter 3 Managing the Barracuda Spam Firewall 21Chapter 3 Managing the Barracuda Spam FirewallThis chapter describes how to manage and configure y

Strany 15 - Click Save Changes

Viewing System Status and Statistics22 Barracuda Spam Firewall User’s GuideViewing System Status and StatisticsThis section contains the following to

Strany 16

Chapter 3 Managing the Barracuda Spam Firewall 23Viewing System Status and StatisticsViewing System StatisticsThe BASIC-->Status page provides e

Strany 17 - Post-Installation Tasks

Monitoring and Classifying Incoming Messages24 Barracuda Spam Firewall User’s GuideMonitoring and Classifying Incoming MessagesOn a regular basis you

Strany 18 - Installation Examples

Chapter 3 Managing the Barracuda Spam Firewall 25Monitoring and Classifying Incoming MessagesClassifying Messages from the Administration Interface

Strany 19

Monitoring and Classifying Incoming Messages26 Barracuda Spam Firewall User’s GuideClassifying Messages From Mail ClientsEnd users can classify their

Strany 20

Chapter 3 Managing the Barracuda Spam Firewall 27Monitoring and Classifying Incoming MessagesUnderstanding the Message LogThe following table descr

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Configuring the Spam Settings28 Barracuda Spam Firewall User’s GuideConfiguring the Spam SettingsThe BASIC-->Spam Scoring page lets you modify the

Strany 22

Chapter 3 Managing the Barracuda Spam Firewall 29Enabling and Disabling Virus Checking and NotificationEnabling and Disabling Virus Checking and No

Strany 23 - Viewing System Statistics

Contents 3ContentsChapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Overview . . . . . . . . . . .

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Setting Up Quarantine30 Barracuda Spam Firewall User’s GuideSpecifying the Quarantine Type The Quarantine Type determines if the Barracuda Spam Firew

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Chapter 3 Managing the Barracuda Spam Firewall 31Setting Up QuarantineSpecifying the Per-User Quarantine SettingsThe following table describes the

Strany 26 - 2. Click Save Changes

Configuring System IP Information32 Barracuda Spam Firewall User’s GuideOverriding the Per-User Quarantine Account SettingsThe Per-User Quarantine Ac

Strany 27 - Viewing Message Details

Chapter 3 Managing the Barracuda Spam Firewall 33Controlling Access to the Administration InterfaceControlling Access to the Administration Interfa

Strany 28 - Configuring the Spam Settings

Resetting and Shutting Down the System34 Barracuda Spam Firewall User’s GuideChanging the Web Interface Port and Session Expiration LengthThe followi

Strany 29 - Setting Up Quarantine

Chapter 3 Managing the Barracuda Spam Firewall 35Automating the Delivery of System ReportsResetting the System Using the Front PanelPressing the RE

Strany 30

Subscribing to Blacklist Services36 Barracuda Spam Firewall User’s GuideSubscribing to Blacklist ServicesThe BLOCK/ACCEPT-->External Blacklist pag

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Chapter 3 Managing the Barracuda Spam Firewall 37Using the Block/Accept FiltersUsing the Block/Accept FiltersThe IP BLOCK/ACCEPT tab provides a wid

Strany 32 - 3. Click Save Changes

Using the Block/Accept Filters38 Barracuda Spam Firewall User’s GuideFiltering by Sender DomainThe BLOCK/ACCEPT-->Sender Domain Block/Accept page

Strany 33

Chapter 3 Managing the Barracuda Spam Firewall 39Using the Block/Accept FiltersFiltering by Recipient Email AddressThe BLOCK/ACCEPT-->Email Reci

Strany 34 - Shutting Down the System

4 Barracuda Spam Firewall User’s GuideConfiguring System IP Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Contro

Strany 35 - Resetting the Bayes Database

Using the Block/Accept Filters40 Barracuda Spam Firewall User’s GuideNote: All messages, including those from whitelisted senders, go through attachm

Strany 36 - About the Blacklist Services

Chapter 3 Managing the Barracuda Spam Firewall 41Using the Block/Accept FiltersFiltering by Body ContentsThe BLOCK/ACCEPT-->Body Filtering page

Strany 37

Backing Up and Restoring System Configuration42 Barracuda Spam Firewall User’s GuideBacking Up and Restoring System Configuration You can backup and

Strany 38 - Filtering by Sender Domain

Chapter 3 Managing the Barracuda Spam Firewall 43Backing Up and Restoring System ConfigurationRestoring System DataTo restore system configuration

Strany 39 - Filtering by Attachment Type

Updating Spam and Virus Definitions Using Energize Updates44 Barracuda Spam Firewall User’s GuideUpdating Spam and Virus Definitions Using Energize U

Strany 40 - Filtering by Subject Line

Chapter 3 Managing the Barracuda Spam Firewall 45Customizing the Appearance of the Administration InterfaceCustomizing the Appearance of the Admini

Strany 41 - Filtering by Header Contents

Configuring Advanced Settings46 Barracuda Spam Firewall User’s GuideConfiguring Advanced SettingsThis section describes some of the expert settings a

Strany 42 - Backing Up System Data

Chapter 3 Managing the Barracuda Spam Firewall 47Configuring Advanced Settings3. Click Save Changes.Setting Email Protocol CheckingThe ADVANCED--&g

Strany 43 - Restoring System Data

Configuring Advanced Settings48 Barracuda Spam Firewall User’s GuideSPF/Caller ID ConfigurationSender Policy Framework/ Microsoft Caller ID:SPF (Send

Strany 44

Chapter 3 Managing the Barracuda Spam Firewall 49Configuring Advanced SettingsConfiguring Message Rate ControlThe ADVANCED-->Rate Controls page

Strany 45 - Barracuda Spam Firewall 600

Contents 5Assigning Features to User Accounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Creating New User Accounts . . . . . .

Strany 46 - Configuring Advanced Settings

Configuring Advanced Settings50 Barracuda Spam Firewall User’s Guide2. Click Download Now. This button will be disabled if the Barracuda Spam Firewal

Strany 47

Chapter 3 Managing the Barracuda Spam Firewall 51Configuring Advanced SettingsSetting Up Clustered Environments The ADVANCED-->Clustering page l

Strany 48

Configuring Advanced Settings52 Barracuda Spam Firewall User’s GuideImplementing Single Sign-onThe ADVANCED-->Single Sign-On page lets you configu

Strany 49 - 3. Click Add

Chapter 3 Managing the Barracuda Spam Firewall 53Configuring Advanced SettingsLocalizing the Spam SettingsThe ADVANCED-->Spam Rule Management pa

Strany 50 - 2. Click Download Now

Managing and Configuring Domains54 Barracuda Spam Firewall User’s GuideManaging and Configuring DomainsThe DOMAINS-->Domain Manager page lets you

Strany 51

Chapter 3 Managing the Barracuda Spam Firewall 55Preventing Dictionary Attacks Using Barracuda MS Exchange Accelerator3. Click Save Changes.Prevent

Strany 52 - Implementing Single Sign-on

Preventing Dictionary Attacks Using Barracuda MS Exchange Accelerator56 Barracuda Spam Firewall User’s Guide3. Enter the required information for eac

Strany 53 - Localizing the Spam Settings

Chapter 3 Managing the Barracuda Spam Firewall 57Replacing a Failed SystemReplacing a Failed SystemBefore you replace your Barracuda Spam Firewall,

Strany 54 - Editing Domain Settings

Managing User Accounts58 Barracuda Spam Firewall User’s GuideTo limit the accounts displayed on this page, use any of the filters described in the fo

Strany 55

Chapter 3 Managing the Barracuda Spam Firewall 59Managing User AccountsAssigning Features to User AccountsThe USERS-->User Features page lets yo

Strany 56

6 Barracuda Spam Firewall User’s Guide

Strany 57 - Managing User Accounts

Enabling SSL60 Barracuda Spam Firewall User’s GuideCreating New User AccountsThe USERS-->User Add/Update page lets you create new user accounts wi

Strany 58

Chapter 3 Managing the Barracuda Spam Firewall 61Enabling SSLWeb Interface HTTPS/SSL portThe SSL port used by the Barracuda Spam Firewall. Default

Strany 59

Customizing Non-Delivery Reports (NDRs)62 Barracuda Spam Firewall User’s GuideCustomizing Non-Delivery Reports (NDRs)The ADVANCED-->Bounce/NDR Mes

Strany 60 - Enabling SSL

Chapter 3 Managing the Barracuda Spam Firewall 63TroubleshootingTroubleshootingThe ADVANCED-->Troubleshooting page provides various tools that h

Strany 61

Troubleshooting64 Barracuda Spam Firewall User’s Guide

Strany 62

Chapter 4 Using the Barracuda Spam Firewall to Filter Your Emails 65Chapter 4 Using the Barracuda Spam Firewall to Filter Your EmailsThis chapter d

Strany 63 - Troubleshooting

Using the Quarantine Interface66 Barracuda Spam Firewall User’s GuideUsing the Quarantine InterfaceAt the end of every quarantine summary report is a

Strany 64

Chapter 4 Using the Barracuda Spam Firewall to Filter Your Emails 67Using the Quarantine InterfaceManaging your Quarantine InboxAfter logging into

Strany 65 - Your Emails

Changing your User Preferences68 Barracuda Spam Firewall User’s GuideChanging your User PreferencesAfter logging into the quarantine interface, selec

Strany 66

Chapter 4 Using the Barracuda Spam Firewall to Filter Your Emails 69Changing your User PreferencesEnabling and Disabling Spam Scanning of your Emai

Strany 67

Chapter 1 Introduction 7Chapter 1 IntroductionThis chapter provides an overview of the Barracuda Spam Firewall and includes the following topics:

Strany 68

Changing your User Preferences70 Barracuda Spam Firewall User’s GuideTo whitelist or blacklist senders, follow these steps:1. Go to the PREFERENCES--

Strany 69

Appendix A About Regular Expressions 71Appendix A About Regular ExpressionsThe Barracuda Spam Firewall lets you use regular expressions in many of

Strany 70

72 Barracuda Spam Firewall User’s GuideUsing Special Characters in ExpressionsThe following characters have a special meaning in regular expressions

Strany 71 - About Regular Expressions

Index 73IndexAAccount View page 57accounts, activating for individuals 49accounts, creating 60activating individual accounts 49administration interf

Strany 72 - Examples

74 Barracuda Spam Firewall User’s GuideFfailed system, replacing 57file attachmentsblocking 39quarantining 40file extensionsblocking 39qaurantining

Strany 73 - Index ■ 73

Index 75RRAID 10Rate Control page 49RBLs 36regular expressions, about 71removing Barracuda headers 48replacing failed system 57RESET button, using 3

Strany 74

76 Barracuda Spam Firewall User’s Guide

Strany 75 - Index ■ 75

Overview8 Barracuda Spam Firewall User’s GuideThe following figure shows each of these defense layers in action.Energize Updates Minimize Administrat

Strany 76

Chapter 1 Introduction 9OverviewThe following figure shows how Barracuda Central provides the latest spam and virus definitions through the Energiz

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