Zyxel-communications 5 Series Manual de usuario descargar pdf (Pagina 16)

ZyWALL 5/35/70 Series User’s Guide

16 Table of Contents

11.13.1 Firewall Edit Custom Service ..............................................................244

11.14 My Service Firewall Rule Example ...............................................................245

Chapter 12

Intrusion Detection and Prevention (IDP).......................................................... 251

12.1 Introduction to IDP ....................................................................................251

12.1.1 Firewalls and Intrusions ........................................................................251

12.1.2 IDS and IDP .........................................................................................252

12.1.3 Host IDP ..............................................................................................252

12.1.4 Network IDP .........................................................................................252

12.1.5 Example Intrusions ...............................................................................253

12.1.5.1 SQL Slammer Worm ...................................................................253

12.1.5.2 Blaster W32.Worm ......................................................................253

12.1.5.3 Nimda ..........................................................................................253

12.1.5.4 MyDoom ......................................................................................254

12.1.6 ZyWALL IDP .........................................................................................254

Chapter 13

Configuring IDP.................................................................................................... 255

13.1 Overview ........................................................................................................255

13.1.1 Interfaces ..............................................................................................255

13.2 General Setup ................................................................................................256

13.3 IDP Signatures ...............................................................................................257

13.3.1 Attack Types .........................................................................................257

13.3.2 Intrusion Severity ..................................................................................259

13.3.3 Signature Actions ..................................................................................259

13.3.4 Configuring IDP Signatures ..................................................................260

13.3.5 Query View ...........................................................................................262

13.3.5.1 Query Example 1 ........................................................................265

13.3.5.2 Query Example 2 ........................................................................266

13.4 Update ...........................................................................................................267

13.4.1 mySecurityZone ....................................................................................267

13.4.2 Configuring IDP Update ........................................................................268

13.5 Backup and Restore .......................................................................................269

Chapter 14

Anti-Virus.............................................................................................................. 271

14.1 Anti-Virus Overview .......................................................................................271

14.1.1 Types of Computer Viruses .................................................................271

14.1.2 Computer Virus Infection and Prevention .............................................271

14.1.3 Types of Anti-Virus Scanner ................................................................272

14.2 Introduction to the ZyWALL Anti-Virus Scanner .............................................272

14.2.1 How the ZyWALL Anti-Virus Scanner Works .......................................273

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Zyxel-communications 5 Series Manual de usuario Pagina 16