ZyXEL NBG420N Bedienungsanleitung PDF herunterladen (Seite 15)

Table of Contents

NBG420N User’s Guide

11.4.1 Game List Example ................................................................................................ 141

11.5 Trigger Port Forwarding ...................................................................................................142

11.5.1 Trigger Port Forwarding Example ........................................................................... 142

11.5.2 Two Points To Remember About Trigger Ports ...................................................... 143

11.6 NAT Advanced Screen ..................................................................................................... 143

Chapter 12

Dynamic DNS ........................................................................................................................147

12.1 Dynamic DNS Introduction ............................................................................................. 147

12.1.1 DynDNS Wildcard .................................................................................................. 147

12.2 Dynamic DNS Screen .................................................................................................... 147

Part III: Security.................................................................................... 151

Chapter 13

Firewall................................................................................................................................... 153

13.1 Introduction to ZyXEL’s Firewall .................................................................................... 153

13.1.1 What is a Firewall? ................................................................................................. 153

13.1.2 Stateful Inspection Firewall .................................................................................... 153

13.1.3 About the NBG420N Firewall ................................................................................. 153

13.1.4 Guidelines For Enhancing Security With Your Firewall .......................................... 154

13.2 Triangle Routes ............................................................................................................... 154

13.2.1 Triangle Routes and IP Alias .................................................................................. 154

13.3 General Firewall Screen ............................................................................................... 155

13.4 Services Screen ............................................................................................................. 156

13.4.1 The Add Firewall Rule Screen ............................................................................... 157

Chapter 14

Content Filtering ................................................................................................................... 161

14.1 Introduction to Content Filtering ...................................................................................... 161

14.2 Restrict Web Features .....................................................................................................161

14.3 Days and Times ............................................................................................................... 161

14.4 Filter Screen .................................................................................................................... 161

14.5 Schedule .......................................................................................................................... 163

14.6 Customizing Keyword Blocking URL Checking ............................................................... 164

14.6.1 Domain Name or IP Address URL Checking ......................................................... 164

14.6.2 Full Path URL Checking ......................................................................................... 164

14.6.3 File Name URL Checking ....................................................................................... 164

Chapter 15

IPSec VPN.............................................................................................................................. 165

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ZyXEL NBG420N Bedienungsanleitung Seite 15