Zyxel-communications Internet Security Appliance ZyWALL5UTM 4.0 Instrukcja Użytkownika Pobierz pdf (Strona 15)

ZyWALL 5/35/70 Series User’s Guide

15 Table of Contents

13.3.3 Signature Actions ..................................................................................244

13.3.4 Configuring IDP Signatures ..................................................................245

13.3.5.1 Query Example 1 ........................................................................247

13.3.5.2 Query Example 2 ........................................................................249

13.4.1 mySecurity Zone ...................................................................................250

13.4.2 Configuring IDP Update ........................................................................251

Chapter 14

Anti-Virus .............................................................................................................. 254

14.1.1 Types of Computer Viruses .................................................................254

14.1.2 Computer Virus Infection and Prevention .............................................254

14.1.3 Types of Anti-Virus Scanner ................................................................255

14.2 Introduction to the ZyWALL Anti-Virus Scanner .............................................255

14.2.1 How the ZyWALL Anti-Virus Scanner Works .......................................256

14.2.2 Notes About the ZyWALL Anti-Virus .....................................................256

14.3 General Anti-Virus Setup ...............................................................................257

14.4.1 mySecurity Zone ...................................................................................259

14.4.2 Configuring Anti-virus Update ...............................................................259

Chapter 15

Anti-Spam ............................................................................................................. 262

15.1.1 Anti-Spam External Database ...............................................................262

15.1.1.1 SpamBulk Engine ........................................................................263

15.1.1.2 SpamRepute Engine ...................................................................263

15.1.1.3 SpamContent Engine ..................................................................263

15.1.1.4 SpamTricks Engine .....................................................................264

15.1.2 Spam Threshold ....................................................................................264

15.1.3 Phishing ................................................................................................264

15.1.4 Whitelist ................................................................................................265

15.1.5 Blacklist .................................................................................................265

15.1.6 SMTP and POP3 ..................................................................................265

15.1.7 MIME Headers ......................................................................................266

15.2 Anti-Spam General Screen ............................................................................266

Chapter 16

Content Filtering Screens ................................................................................... 274

16.1 Content Filtering Overview .............................................................................274

16.1.1 Restrict Web Features ..........................................................................274

16.1.2 Create a Filter List ................................................................................274

16.1.3 Customize Web Site Access ................................................................274

16.3 Content Filtering with an External Database ..................................................276

16.6 Customizing Keyword Blocking URL Checking ..............................................286

16.6.1 Domain Name or IP Address URL Checking ........................................286

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Zyxel-communications Internet Security Appliance ZyWALL5UTM 4.0 Instrukcja Użytkownika Strona 15