F-SECURE ANTI-VIRUS - FOR MICROSOFT EXCHANGE Administrator's Manual

F-Secure Anti-Virus for

Microsoft Exchange

Administrator’s Guide

"F-Secure" and the triangle symbol are registered trademarks of F-Secure Corporation and F-Secure

product names and symbols/logos are either trademarks or registered trademarks of F-Secure

Corporation. All product names referenced herein are trademarks or registered trademarks of their

respective companies. F-Secure Corporation disclaims proprietary interest in the marks and names of

others. Although F-Secure Corporation makes every effort to ensure that this information is accurate,

F-Secure Corporation will not be liable for any errors or omission of facts contained herein. F-Secure

Corporation reserves the right to modify specifications cited in this document without prior notice.

Companies, names and data used in examples herein are fictitious unless otherwise noted. No part of

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mechanical, for any purpose, without the express written permission of F-Secure Corporation.

This product includes software developed by the Apache Software Foundation (http://

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All files in the SpamAssassin distribution fall under the same terms as Perl itself, as described in the

“Artistic License”.

This product may be covered by one or more F-Secure patents, including the following:

12000040-9B02

GB2353372 GB2366691 GB2366692 GB2366693 GB2367933 GB2368233

GB2374260

3

Contents

About This Guide 9

How This Guide Is Organized ............................................................................................ 10

Conventions Used in F-Secure Guides.............................................................................. 12

Symbols .................................................................................................................... 12

Chapter 1 Introduction 14

1.1 Overview....................................................................................................................15

1.2 How F-Secure Anti-Virus for Microsoft Exchange Works...........................................16

1.3 Key Features..............................................................................................................19

1.4 Scanning Methods .....................................................................................................21

1.5 F-Secure Anti-Virus Mail Server and Gateway Products...........................................22

Chapter 2 Deployment 23

2.1 Installation Modes......................................................................................................24

2.2 Network Requirements...............................................................................................25

2.3 Deployment Scenarios...............................................................................................26

2.3.1 Single Exchange Server (2000/2003/2007)....................................................27

2.3.2 Multiple Exchange 2000/2003 Servers...........................................................28

2.3.3 Multiple Exchange Server 2007 Roles ...........................................................29

2.3.4 Large organization using Exchange 2007......................................................30

2.3.5 Centralized Quarantine Management.............................................................32

Chapter 3 Installation 35

3.1 System Requirements................................................................................................36

4

3.1.1 Installation on Microsoft Exchange Server 2000/2003...................................36

3.1.2 Installation on Microsoft Exchange Server 2007............................................38

3.2 Other System Component Requirements..................................................................40

3.2.1 SQL Server Requirements .............................................................................40

3.2.2 Additional Windows Components...................................................................42

3.2.3 Web Browser Software Requirements ...........................................................43

3.3 Improving Reliability and Performance ......................................................................43

3.4 Centrally Administered or Stand-alone Installation? ..................................................44

3.5 Installation Overview..................................................................................................45

3.6 Installing F-Secure Anti-Virus for Microsoft Exchange...............................................46

3.7 After the Installation ...................................................................................................60

3.7.1 Importing Product MIB files to F-Secure Policy Manager Console.................60

3.7.2 Configuring the Product..................................................................................61

3.8 Upgrading from the Version 6.62...............................................................................63

3.9 Upgrading the Evaluation Version..............................................................................65

3.10 Uninstalling F-Secure Anti-Virus for Microsoft Exchange ..........................................66

Chapter 4 Using F-Secure Anti-Virus for Microsoft Exchange 67

4.1 Administering F-Secure Anti-Virus for Microsoft Exchange .......................................68

4.2 Using Web Console ...................................................................................................69

4.2.1 Logging in for the First Time...........................................................................69

4.2.2 Modifying Settings and Viewing Statistics with Web Console........................71

4.2.3 Checking the Product Status .........................................................................72

4.3 Using F-Secure Policy Manager Console ..................................................................72

4.3.1 Modifying Settings and Viewing Statistics in Centrally Administered Mode ...72

Chapter 5 Centrally Managed Administration 75

5.1 Overview....................................................................................................................76

5.2 F-Secure Anti-Virus for Microsoft Exchange Settings................................................76

5.2.1 General Settings.............................................................................................76

5.2.2 Transport Protection.......................................................................................84

5.2.3 Storage Protection..........................................................................................99

5.3 F-Secure Anti-Virus for Microsoft Exchange Statistics.............................................126

5.3.1 Common.......................................................................................................127

5

5.3.2 Transport Protection.....................................................................................128

5.3.3 Storage Protection........................................................................................129

5.3.4 Quarantine....................................................................................................132

5.4 F-Secure Content Scanner Server Settings.............................................................132

5.4.1 Interface........................................................................................................133

5.4.2 Virus Scanning .............................................................................................134

5.4.3 Virus Statistics..............................................................................................136

5.4.4 Database Updates........................................................................................138

5.4.5 Spam Filtering ..............................................................................................138

5.4.6 Threat Detection Engine...............................................................................139

5.4.7 Proxy Configuration......................................................................................140

5.4.8 Advanced......................................................................................................141

5.5 F-Secure Content Scanner Server Statistics ...........................................................142

5.5.1 Server...........................................................................................................142

5.5.2 Scan Engines ...............................................................................................143

5.5.3 Common.......................................................................................................144

5.5.4 Spam Control................................................................................................144

5.5.5 Virus Statistics..............................................................................................145

5.6 F-Secure Management Agent Settings....................................................................145

5.7 F-Secure Automatic Update Agent Settings ............................................................147

Chapter 6 Administration with Web Console 149

6.1 Overview..................................................................................................................150

6.2 Home........................................................................................................................150

6.3 Transport Protection.................................................................................................155

6.3.1 Attachment Filtering......................................................................................158

6.3.2 Virus Scanning .............................................................................................161

6.3.3 Grayware Scanning......................................................................................165

6.3.4 Archive Processing.......................................................................................168

6.3.5 Content Filtering ..........................................................................................172

6.3.6 Security Options...........................................................................................175

6.4 Storage Protection ...................................................................................................179

6.4.1 Real-Time Scanning.....................................................................................181

6.4.2 Manual Scanning .........................................................................................191

6.4.3 Scheduled Scanning ....................................................................................204

6.5 Spam Control...........................................................................................................216

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6.6 Quarantine ...............................................................................................................218

6.6.1 Query............................................................................................................220

6.6.2 Options.........................................................................................................220

6.7 Automatic Updates...................................................................................................228

6.7.1 Communications...........................................................................................231

6.8 Content Scanner Server...........................................................................................235

6.8.1 Options.........................................................................................................236

6.9 Server Properties.....................................................................................................246

6.9.1 Network Configuration .................................................................................247

6.9.2 Administration...............................................................................................249

6.9.3 Notifications..................................................................................................254

6.9.4 Lists and Templates .....................................................................................255

6.9.5 Sample Submission......................................................................................259

Chapter 7 Quarantine Management 261

7.1 Introduction ..............................................................................................................262

7.1.1 Quarantine Reasons.....................................................................................263

7.2 Configuring Quarantine Options...............................................................................264

7.3 Quarantine Status ....................................................................................................264

7.3.1 Quarantine Logging......................................................................................264

7.4 Searching the Quarantined Content.........................................................................264

7.5 Query Results Page.................................................................................................269

7.5.1 Viewing Details of the Quarantined Message ..............................................270

7.6 Quarantine Operations.............................................................................................271

7.6.1 Reprocessing the Quarantined Content.......................................................273

7.6.2 Releasing the Quarantined Content.............................................................274

7.6.3 Removing the Quarantined Content.............................................................275

7.6.4 Deleting Old Quarantined Content Automatically.........................................275

7.7 Moving the Quarantine Storage...............................................................................276

Chapter 8 Administering F-Secure Spam Control 278

8.1 Overview..................................................................................................................279

8.2 Spam Control Settings in Centrally Managed Environments ...................................280

8.3 Spam Control Settings in Web Console ..................................................................284

7

8.4 Realtime Blackhole List Configuration .....................................................................289

8.4.1 Configuring Realtime Blackhole Lists...........................................................289

8.4.2 Optimizing F-Secure Spam Control Performance........................................291

Chapter 9 Updating Virus and Spam Definition Databases 293

9.1 Overview..................................................................................................................294

9.2 Automatic Updates with F-Secure Automatic Update Agent....................................294

9.3 Configuring Automatic Updates ...............................................................................294

AppendixA Variables in Warning Messages 296

List of Variables................................................................................................................ 297

AppendixB Services and Processes 299

B.1 List of Services and Processes............................................................................... 300

AppendixC Deploying the Product on a Cluster 303

C.1 Installation Overview............................................................................................... 304

C.2 Creating Quarantine Storage...................................................................................305

C.2.1 Quarantine Storage in Active-Passive Cluster .............................................305

C.2.2 Quarantine Storage in Active-Active Cluster................................................310

C.2.3 Creating the Quarantine Storage for a Single Copy Cluster Environment ...312

C.2.4 Creating the Quarantine Storage for a Continuous Cluster Replication Environ-

ment..............................................................................................................319

C.3 Installing the Product................................................................................................323

C.3.1 Installing on Active-Passive Cluster .............................................................323

C.3.2 Installing on Active-Active Cluster................................................................325

C.4 Administering the Cluster Installation with F-Secure Policy Manager......................328

C.5 Using the Quarantine in the Cluster Installation.......................................................329

C.6 Uninstallation............................................................................................................331

C.7 Troubleshooting .......................................................................................................331

AppendixD Sending E-mail Alerts And Reports 332

D.1 Overview................................................................................................................. 333

D.2 Solution....................................................................................................................333

8

D.2.1 Creating a Scoped Receive Connector........................................................334

D.2.2 Grant the Relay Permission on the New Scoped Connector........................335

D.2.3 Specify SMTP Server for Alerts and Reports...............................................335

Chapter E Troubleshooting 336

E.1 Overview..................................................................................................................337

E.2 Starting and Stopping...............................................................................................337

E.3 Viewing the Log File.................................................................................................338

E.4 Common Problems and Solutions............................................................................338

E.4.1 Installing Service Packs................................................................................341

E.4.2 Securing the Quarantine...............................................................................342

E.4.3 Administration Issues ...................................................................................342

E.5 Frequently Asked Questions....................................................................................343

Technical Support 344

F-Secure Online Support Resources ............................................................................... 345

Web Club .........................................................................................................................347

Virus Descriptions on the Web .........................................................................................347

9

ABOUT THIS GUIDE

How This Guide Is Organized.................................................... 10

Conventions Used in F-Secure Guides..................................... 13

10

How This Guide Is Organized

F-Secure Anti-Virus for Microsoft Exchange Administrator's Guide is

divided into the following chapters:

Chapter 1. Introduction. General information about F-Secure Anti-Virus

for Microsoft Exchange and other F-Secure Anti-Virus Mail Server and

Gateway products.

Chapter 2. Deployment. Instructions and examples how to set up your

network environment before you can install F-Secure Anti-Virus for

Microsoft Exchange.

Chapter 3. Installation. Instructions how to install and set up F-Secure

Anti-Virus for Microsoft Exchange.

Chapter 4. Using F-Secure Anti-Virus for Microsoft Exchange.

Instructions how to use and administer F-Secure Anti-Virus for Microsoft

Exchange.

Chapter 5. Centrally Managed Administration. Instructions how to

remotely administer F-Secure Anti-Virus for Microsoft Exchange and

F-Secure Content Scanner Server when they have been installed in

centralized administration mode.

Chapter 6. Administration with Web Console. Instructions how to

administer F-Secure Anti-Virus for Microsoft Exchange with the Web

Console.

Chapter 7. Quarantine Management. Instructions how you can manage

and search quarantined mails with the F-Secure Anti-Virus for Microsoft

Exchange Web Console.

Chapter 9. Updating Virus and Spam Definition Databases. Instructions

how to update your virus definition database.

Chapter 8. Administering F-Secure Spam Control. General information

about and instructions on how to configure F-Secure Spam Control.

Appendix A. Variables in Warning Messages. Lists variables that can

be included in virus warning messages.

About This Guide 11

Appendix B. Services and Processes. Describes services, devices and

processes of F-Secure Anti-Virus for Microsoft Exchange.

Appendix D. Sending E-mail Alerts And Reports. Instructions how to

configure the product to send alerts to the administrator by e-mail.

Chapter E. Troubleshooting. Solutions to some common problems.

Technical Support. Contains the contact information for assistance.

About F-Secure Corporation. Describes the company background and

products.

See the F-Secure Policy Manager Administrator's Guide for detailed

information about installing and using the F-Secure Policy Manager

components:

 F-Secure Policy Manager Console, the tool for remote

administration of F-Secure Anti-Virus for Microsoft Exchange.

 F-Secure Policy Manager Server, which enables communication

between F-Secure Policy Manager Console and the managed

systems.

12

Conventions Used in F-Secure Guides

This section describes the symbols, fonts, and terminology used in this

manual.

Symbols

⇒ An arrow indicates a one-step procedure.

Fonts

Arial bold (blue) is used to refer to menu names and commands, to

buttons and other items in a dialog box.

Arial Italics (blue) is used to refer to other chapters in the manual, book

titles, and titles of other manuals.

Arial Italics (black) is used for file and folder names, for figure and table

captions, and for directory tree names.

Courier New is used for messages on your computer screen.

WARNING: The warning symbol indicates a situation with a

risk of irreversible destruction to data.

IMPORTANT: An exclamation mark provides important information

that you need to consider.

REFERENCE - A book refers you to related information on the

topic available in another document.

l

NOTE - A note provides additional information that you should

consider.

TIP - A tip provides information that can help you perform a task

more quickly or easily.

13

Courier New bold is used for information that you must type.

SMALL CAPS (BLACK) is used for a key or key combination on your

keyboard.

Arial underlined (blue)

is used for user interface links.

Arial italics is used for window and dialog box names.

PDF Document

This manual is provided in PDF (Portable Document Format). The PDF

document can be used for online viewing and printing using Adobe®

Acrobat® Reader. When printing the manual, please print the entire

manual, including the copyright and disclaimer statements.

For More Information

Visit F-Secure at http://www.f-secure.com for documentation, training

courses, downloads, and service and support contacts.

In our constant attempts to improve our documentation, we would

welcome your feedback. If you have any questions, comments, or

suggestions about this or any other F-Secure document, please contact

us at documentation@f-secure.com

.

14

1

INTRODUCTION

Overview..................................................................................... 15

How F-Secure Anti-Virus for Microsoft Exchange Works........... 16

Key Features.............................................................................. 19

Scanning Methods...................................................................... 21

F-Secure Anti-Virus Mail Server and Gateway Products............ 22

CHAPTER 1 15

Introduction

1.1 Overview

Malicious code, such as computer viruses, is one of the main threats for

companies today. In the past, malicious code spread mainly via disks and

the most common viruses were the ones that infected disk boot sectors.

When users began to use office applications with macro capabilities -

such as Microsoft Office - to write documents and distribute them via mail

and groupware servers, macro viruses started spreading rapidly.

After the millennium, the most common spreading mechanism has been

the e-mail. Today about 90% of viruses arrive via e-mail. E-mails provide

a very fast and efficient way for viruses to spread themselves without any

user intervention and that is why e-mail worm outbreaks, like Sober,

Netsky and Bagle, have caused a lot of damage around the world.

F-Secure Anti-Virus Mail Server and Gateway products are designed to

protect your company's mail and groupware servers and to shield the

company network from any malicious code that travels in HTTP or SMTP

traffic. In addition, they protect your company network against spam. The

protection can be implemented on the gateway level to screen all

incoming and outgoing e-mail (SMTP), web surfing (HTTP and

FTP-over-HTTP) and file transfer (FTP) traffic. Furthermore, it can be

implemented on the mail server level so that it does not only protect

inbound and outbound traffic but also internal mail traffic and public

sources, such as public folders on Microsoft Exchange servers.

Providing the protection already on the gateway level has plenty of

advantages. The protection is easy and fast to set up and install,

compared to rolling out antivirus protection on hundreds or thousands of

workstations. The protection is also invisible to the end users which

ensures that the system cannot be by-passed and makes it easy to

maintain. Of course, protecting the gateway level alone is not enough to

provide a complete antivirus solution; file server and workstation level

protection is needed, also.

Why clean 1000 workstations when you can clean one attachment at the

gateway level?

16

1.2 How F-Secure Anti-Virus for Microsoft Exchange

Works

F-Secure Anti-Virus for Microsoft Exchange is designed to detect and

disinfect viruses and other malicious code from e-mail transmissions

through Microsoft Exchange Server. Scanning is done in real time as the

mail passes through Microsoft Exchange Server. On-demand scanning of

user mailboxes and public folders is also available.

Scanning

Attachments and

Message Bodies

F-Secure Anti-Virus for Microsoft Exchange scans attachments and

message bodies for malicious code. It can also be instructed to remove

particular attachments according to the file name or the file extension.

If the intercepted mail contains malicious code, F-Secure Anti-Virus for

Microsoft Exchange can be configured to disinfect or drop the content.

Any malicious code found during the scan process can be placed in the

Quarantine, where it can be further examined. Stripped attachments can

also be placed in the Quarantine for further examination.

Flexible and Scalable

Anti-Virus Protection

F-Secure Anti-Virus for Microsoft Exchange is installed on Microsoft

Exchange Server and it intercepts mail traveling to and from mailboxes

and public folders. The messages and documents are scanned with the

scanning component, F-Secure Content Scanner Server, which also

disinfects the infected messages.

Alerting F-Secure Anti-Virus for Microsoft Exchange has extensive alerting

functions, which means that the system administrator can specify a

recipient, such as the network administrator, to be notified about the

infection found in the data content.

Powerful and Always

Up-to-date

F-Secure Anti-Virus for Microsoft Exchange uses the award-winning

F-Secure Anti-Virus techniques and scanning engines to ensure the

highest possible detection rate and disinfection capability. The F-Secure

Anti-Virus definition databases are updated typically multiple times a day

and they provide F-Secure Anti-Virus for Microsoft Exchange an always

up-to-date protection capability.

CHAPTER 1 17

Introduction

F-Secure Anti-Virus scanner consistently ranks at the top when compared

to competing products. Our team of dedicated virus researchers is on call

24-hours a day responding to new and emerging threats. In fact,

F-Secure is one of the only companies to release tested virus definition

updates continuously, to make sure our customers are receiving the

highest quality service and protection.

Virus and Spam

Outbreak Detection

Massive spam and virus outbreaks consist of millions of messages which

share at least one identifiable pattern that can be used to distinguish the

outbreak. Any message that contains one or more of these patterns can

be assumed to be a part of the same spam or virus outbreak.

F-Secure Anti-Virus for Microsoft Exchange can identify these patterns

from the message envelope, headers and body, in any language,

message format and encoding type. It can detect spam messages and

new viruses during the first minutes of the outbreak.

Stand-alone and

Centralized

Administration Modes

F-Secure Anti-Virus for Microsoft Exchange can be installed either in

stand-alone or centrally administered mode. Depending on how it has

been installed, F-Secure Anti-Virus for Microsoft Exchange is managed

either with the F-Secure Anti-Virus for Microsoft Exchange Web Console

or F-Secure Policy Manager.

Scalability and

Reliability

F-Secure Policy Manager provides a scalable way to manage the security

of multiple applications on multiple operating systems, from one central

location. F-Secure Policy Manager is comprised of two components,

F-Secure Policy Manager Console and F-Secure Policy Manager Server,

which are used to administer applications. They are seamlessly

integrated with the F-Secure Management Agents that handle all

management functions on local hosts.

Easy to

Administer

If F-Secure Anti-Virus for Microsoft Exchange is installed in stand-alone

mode it can be managed with the web-based user interface.

If F-Secure Anti-Virus for Microsoft Exchange has been installed in

centrally administered configuration, it is managed with F-Secure Policy

Manager. With its graphical user interface, F-Secure Policy Manager

Console provides a centralized view of the domains and hosts in your

network, lets you configure the security policies for all F-Secure

18

components and set up scheduled scans and run manual scanning

operations. F-Secure Policy Manager receives status information from

F-Secure Anti-Virus for Microsoft Exchange.

F-Secure Policy Manager Server is the server side component that

handles communication between F-Secure Anti-Virus for Microsoft

Exchange and F-Secure Policy Manager Console. It exchanges security

policies, software updates, status information, statistics, alerts, and other

information between F-Secure Policy Manager Console and all managed

systems.

Figure 1-1 (1) E-mail arrives from the Internet to F-Secure Anti-Virus for Microsoft

Exchange, which (2) filters malicious content from mails and attachments, and (3)

delivers cleaned files forward.

CHAPTER 1 19

Introduction

1.3 Key Features

F-Secure Anti-Virus for Microsoft Exchange provides the following

features and capabilities.

Superior Protection  Superior detection rate with multiple scanning engines.

 Automatic malicious code detection and disinfection.

 The grayware scan detects spyware, adware, dialers, joke

programs, remote access tools, and any other unwelcome files

and programs.

 Heuristic scanning detects also unknown Windows and macro

viruses.

 Recursive scanning of ARJ, BZ2, CAB, GZ, JAR, LZH, MSI,

RAR, TAR, TGZ, Z and ZIP archive files.

 Automatic and consistent virus definition database updates.

 Suspicious and unsafe attachments can be stripped away from

e-mails.

 Password protected archives can be treated as unsafe.

 Intelligent file type recognition.

Virus Outbreak

Detection

 The virus outbreak detection is an additional active layer of

protection that automatically detects virus outbreaks and

quarantines suspicious messages.

 Virus outbreaks are transparently detected and infected

messages are quarantined before the outbreak becomes

widespread.

 Quarantined unsafe messages can be reprocessed

automatically.

20

Transparency and

Scalability

 Viruses are intercepted before they can enter the network and

spread out on workstations and servers.

 Real-time scanning of internal, inbound and outbound mail

messages and public folder notes.

 Automatic protection of new mailboxes and public folders.

 Total transparency to end-users. Users cannot bypass the

system, which means that messages and documents cannot be

exchanged without scanning.

Management  Controlling and monitoring the behavior of the products remotely.

 Starting predefined operations remotely.

 Monitoring statistics provided by the products remotely with

F-Secure Policy Manager or F-Secure Anti-Virus for Microsoft

Exchange Web Console.

 Possibility to configure and manage stand-alone installations with

the convenient F-Secure Anti-Virus for Microsoft Exchange Web

Console.

 You can manage and search quarantined content with the

F-Secure Anti-Virus for Microsoft Exchange Web Console.

Protection against

Spam

 Possible spam messages are transparently detected before they

become widespread.

 Efficient spam detection based on different analyses on the

e-mail content.

 Multiple filtering mechanisms guarantee the high accuracy of

spam detection.

 Spam messages can be separated from legitimate messages and

processed using the Spam Confidence Levels.

 Spam detection works in every language and message format.

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