ZyXEL Communications 5 Series - Manual (Page 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