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ZyXEL Communications P-660HN-F1 manual 148

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Chapter 8 Network Address Translation (NAT)

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148	P-660HN-F1 User’s Guide

Contents

Default Login Details www.zyxel.com Page About This User's Guide Document Conventions Page Safety Warnings Page Page Contents Overview Page Table of Contents Part II: Wizard Page Part IV: Security Page Part V: Advanced Page Page Page Page List of Figures Page Page Page Page Page List of Tables Page Page Page PART Introduction Page Introducing the ZyXEL Device 1.1 Overview 1.2Ways to Manage the ZyXEL Device 1.3Good Habits for Managing the ZyXEL Device 1.4Applications for the ZyXEL Device 1.5 LEDs (Lights) 1.6 The RESET Button 1.7The WPS WLAN Button 1.7.1 Turn the Wireless LAN Off or On 1.7.2Activate WPS Page Introducing the Web Configurator 2.1 Overview Page 2.2 Web Configurator Main Screen 2.2.2 Navigation Panel Page 2.2.3 Main Window 2.2.4 Status Bar Status Screens 3.1 Overview 3.2 The Status Screen Page Page 3.3 Client List 3.4 WLAN Status 3.5 Packet Statistics Page 3.6 Any IP Table Wizard Page Internet and Wireless Setup Wizard 4.1 Overview 4.2Internet Access Wizard Setup Page 4.2.1Manual Configuration Page Page Page Page 4.3 Wireless Connection Wizard Setup Page Page 4.3.1 Manually Assign a WPA-PSKkey 4.3.2 Manually Assign a WEP Key Page Page Page ART Network Page WAN Setup 5.1 Overview 5.2 The Internet Access Setup Screen Page Page 5.2.1 Advanced Internet Access Setup Page 5.3 The More Connections Screen 5.3.1 More Connections Edit Page Page 5.3.2 Configuring More Connections Advanced Setup 5.4 The WAN Backup Setup Screen Page 5.5 WAN Technical Reference 5.5.2 Multiplexing 5.5.3 VPI and VCI 5.6 Metric 5.7 Traffic Shaping 5.8 Traffic Redirect Page Page LAN Setup 6.1 Overview 6.2 The LAN IP Screen 6.2.1 The Advanced LAN IP Setup Screen Page 6.3 The DHCP Setup Screen Page 6.4 The Client List Screen 6.5 The IP Alias Screen 6.5.1 Configuring the LAN IP Alias Screen 6.6 LAN Technical Reference 6.6.2 DHCP Setup 6.6.3 DNS Server Addresses 6.6.4LAN TCP/IP Page 6.6.5 RIP Setup 6.6.6 Multicast 6.6.7 Any IP Page Page Wireless LAN 7.1 Overview 7.1.2 What You Need to Know About Wireless 7.1.3 Before You Start 7.2 The AP Screen 7.2.1 No Security 7.2.2 WEP Encryption 7.2.3 WPA(2)-PSK 7.2.4 WPA(2) Authentication Page 7.2.5 Wireless LAN Advanced Setup 7.2.6 MAC Filter 7.3 The More AP Screen 7.3.1 More AP Edit 7.4 The WPS Screen 7.5 The WPS Station Screen 7.6 The WDS Screen 7.7 The QoS Screen 7.8 The Scheduling Screen 7.9 Wireless LAN Technical Reference Page 7.9.2 Additional Wireless Terms 7.9.3 Wireless Security Overview Page 7.9.4Signal Problems 7.9.5 BSS 7.9.6 MBSSID 7.9.7 Wireless Distribution System (WDS) 7.9.8 WiFi Protected Setup (WPS) Page Page Page Page Page Page Network Address Translation (NAT) 8.1 Overview 8.2 The NAT General Setup Screen 8.3The Port Forwarding Screen 8.3.1 Configuring the Port Forwarding Screen 8.3.2 The Port Forwarding Rule Edit Screen 8.4The Address Mapping Screen Page 8.4.1 The Address Mapping Rule Edit Screen 8.5 The SIP ALG Screen 8.6 NAT Technical Reference 8.6.2 What NAT Does 8.6.3 How NAT Works 8.6.4 NAT Application Corporation B Corporation A 8.6.5 NAT Mapping Types Page Page Security Page Firewalls 9.1 Overview 9.1.2 What You Need to Know About Firewall 9.1.3Firewall Rule Setup Example Page Page Page 9.2 The Firewall General Screen 9.3The Firewall Rule Screen Page 9.3.1 Configuring Firewall Rules Page Page 9.3.2 Customized Services 9.3.3 Configuring a Customized Service 9.4 The Firewall Threshold Screen 9.4.1 Threshold Values 9.4.2Configuring Firewall Thresholds Page 9.5 Firewall Technical Reference Page 9.5.2 Guidelines For Enhancing Security With Your Firewall 9.5.3Security Considerations 9.5.4 Triangle Route Page Page Content Filtering 10.1 Overview Page 10.2 The Keyword Screen 10.3 The Schedule Screen 10.4 The Trusted Screen Page Packet Filter 11.1 Overview 11.2 The Packet Filter Screen 11.2.1 Editing Protocol Filters 11.2.2 Configuring Protocol Filter Rules Page 11.2.3 Editing Generic Filters 11.2.4 Configuring Generic Packet Rules 11.3 Packet Filter Technical Reference 11.3.2 Firewall Versus Filters Page Page Certificates 12.1 Overview 12.2 The My Certificates Screen Page 12.2.1 My Certificate Import 12.2.2 My Certificate Create Page 12.2.3 My Certificate Details Page Page 12.3 The Trusted CAs Screen 12.3.1 Trusted CA Import 12.3.2 Trusted CA Details Page Page 12.4 The Trusted Remote Hosts Screens Page 12.4.1 Trusted Remote Hosts Import 12.4.2 Trusted Remote Host Certificate Details Page Page 12.5 The Directory Servers Screens 12.5.1 Directory Server Add and Edit 12.6Certificates Technical Reference 12.6.2 Private-PublicCertificates 12.6.3Verifying a Trusted Remote Host’s Certificate Page PART V Advanced Page Static Route 13.1 Overview 13.2 The Static Route Screen 13.2.1 Static Route Edit Page 14.1 Overview 14.1.3 802.1Q/1P Example Page Page 14.2 The 802.1Q/1P Group Setting Screen Page 14.2.1 Editing 802.1Q/1P Group Setting 14.3 The 802.1Q/1P Port Setting Screen Page Page Quality of Service (QoS) 15.1 Overview 15.1.3 QoS Class Setup Example Page Page 15.2 The QoS General Screen 15.3 The Class Setup Screen Page Page Page 15.4 The QoS Monitor Screen 15.5 QoS Technical Reference 15.5.3 DiffServ 15.5.4 Automatic Priority Queue Assignment Page Page Dynamic DNS Setup 16.1 Overview 16.2 The Dynamic DNS Screen Page Page Page Remote Management 17.1 Overview 17.1.1What You Can Do in the Remote Management Screens 17.1.2What You Need to Know About Remote Management 17.2 The WWW Screen 17.2.2 Configuring the WWW Screen 17.3 The Telnet Screen 17.4 The FTP Screen 17.5 The SNMP Screen Page 17.5.1 Supported MIBs 17.5.2 SNMP Traps 17.5.3 Configuring SNMP Page 17.6 The DNS Screen 17.7 The ICMP Screen Page Page Universal Plug-and-Play(UPnP) 18.1 Overview 18.2 The UPnP Screen 18.3 Installing UPnP in Windows Example Page Page 18.4 Using UPnP in Windows XP Example Page Page Page Page Page Page Maintenance Page System Settings 19.1 Overview 19.2 The General Screen Page 19.3 The Time Setting Screen Page Page Page Logs 20.1 Overview 20.2 The View Log Screen 20.3 The Log Settings Screen Page 20.4 SMTP Error Messages 20.5 Log Descriptions Page Page Page Page Page Page Page Tools 21.1 Overview 21.1.3Before You Begin 21.1.4 Tool Examples Page Page Page 21.2 The Firmware Screen Page 21.3 The Configuration Screen Page 21.4 The Restart Screen Page Diagnostic 22.1 Overview 22.2 The General Diagnostic Screen 22.3 The DSL Line Diagnostic Screen Page Page Troubleshooting and Specifications Page Product Specifications 23.1 Hardware Specifications 23.2 Firmware Specifications Page Page 23.3 Wireless Features Page 23.4 Power Adaptor Specifications Page Page Troubleshooting 24.1Power, Hardware Connections, and LEDs 24.2 ZyXEL Device Access and Login Page 24.3 Internet Access Appendices and Index Page Windows 95/98/Me Page Page Windows 2000/NT/XP Page Page Page Page Windows Vista Page Page Page Page Macintosh OS 8/9 Page Macintosh OS Linux Page Page Page Page Page Internet Explorer Pop-upBlockers Page Page JavaScript Java Permissions Mozilla Firefox Page Page Introduction to IP Addresses Structure Subnet Masks Notation Subnetting Example: Four Subnets Example: Eight Subnets Subnet Planning Configuring IP Addresses Wireless LAN Topologies Page Channel RTS/CTS Fragmentation Threshold Preamble Type IEEE 802.11g Wireless LAN Wireless Security Overview IEEE RADIUS Types of EAP Authentication Page Dynamic WEP Key Exchange WPA and WPA2 Page Page Security Parameters Summary Antenna Overview Antenna Characteristics Types of Antennas for WLAN Positioning Antennas Page Page Page Page Internal SPTGEN Overview The Configuration Text File Format Internal SPTGEN FTP Download Example Internal SPTGEN FTP Upload Example Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Command Examples Page Copyright Certifications Page ZyXEL Limited Warranty Page Page Page Page Page Page Page Index