ZyXEL Communications P-662H-61 User manual

www.zyxel.com
P-662H/HW-D Series
802.11g ADSL2+ 4-Port Security Gateway
User’s Guide
Version 3.40
12/2008
Edition 3
DEFAULT LOGIN
IP Address http://192.168.1.1
User Password user
Admin Password 1234

About This User's Guide
P-662H/HW-D Series User’s Guide 3
About This User's Guide
Intended Audience
This manual is intended for people who want to configure the ZyXEL Device using the web
configurator. You should have at least a basic knowledge of TCP/IP networking concepts and
topology.
Related Documentation
• Quick Start Guide
The Quick Start Guide is designed to help you get up and running right away. It contains
information on setting up your network and configuring for Internet access.
• Web Configurator Online Help
Embedded web help for descriptions of individual screens and supplementary
information.
"It is recommended you use the web configurator to configure the ZyXEL
Device.
• Supporting Disk
Refer to the included CD for support documents.
• ZyXEL Web Site
Please refer to www.zyxel.com for additional support documentation and product
certifications.
User Guide Feedback
Help us help you. Send all User Guide-related comments, questions or suggestions for
improvement to the following address, or use e-mail instead. Thank you!
The Technical Writing Team,
ZyXEL Communications Corp.,
6 Innovation Road II,
Science-Based Industrial Park,
Hsinchu, 300, Taiwan.
E-mail: [email protected]

Document Conventions
P-662H/HW-D Series User’s Guide
4
Document Conventions
Warnings and Notes
These are how warnings and notes are shown in this User’s Guide.
1Warnings tell you about things that could harm you or your device.
"Notes tell you other important information (for example, other things you may
need to configure or helpful tips) or recommendations.
Syntax Conventions
• The P-662H/HW-D may be referred to as the “ZyXEL Device”, the “device”, the
“system” or the “product” in this User’s Guide.
• Product labels, screen names, field labels and field choices are all in bold font.
• A key stroke is denoted by square brackets and uppercase text, for example, [ENTER]
means the “enter” or “return” key on your keyboard.
• “Enter” means for you to type one or more characters and then press the [ENTER] key.
“Select” or “choose” means for you to use one of the predefined choices.
• A right angle bracket ( > ) within a screen name denotes a mouse click. For example,
Maintenance > Log > Log Setting means you first click Maintenance in the navigation
panel, then the Log sub menu and finally the Log Setting tab to get to that screen.
• Units of measurement may denote the “metric” value or the “scientific” value. For
example, “k” for kilo may denote “1000” or “1024”, “M” for mega may denote “1000000”
or “1048576” and so on.
• “e.g.,” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.

Document Conventions
P-662H/HW-D Series User’s Guide 5
Icons Used in Figures
Figures in this User’s Guide may use the following generic icons. The ZyXEL Device icon is
not an exact representation of your device.
ZyXEL Device Computer Notebook computer
Server DSLAM Firewall
Telephone Switch Router

Safety Warnings
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6
Safety Warnings
1For your safety, be sure to read and follow all warning notices and instructions.
• Do NOT use this product near water, for example, in a wet basement or near a swimming
pool.
• Do NOT expose your device to dampness, dust or corrosive liquids.
• Do NOT store things on the device.
• Do NOT install, use, or service this device during a thunderstorm. There is a remote risk
of electric shock from lightning.
• Connect ONLY suitable accessories to the device.
• Do NOT open the device or unit. Opening or removing covers can expose you to
dangerous high voltage points or other risks. ONLY qualified service personnel should
service or disassemble this device. Please contact your vendor for further information.
• Make sure to connect the cables to the correct ports.
• Place connecting cables carefully so that no one will step on them or stumble over them.
• Always disconnect all cables from this device before servicing or disassembling.
• Use ONLY an appropriate power adaptor or cord for your device. Connect it to the right
supply voltage (for example, 110V AC in North America or 230V AC in Europe).
• Do NOT allow anything to rest on the power adaptor or cord and do NOT place the
product where anyone can walk on the power adaptor or cord.
• Do NOT use the device if the power adaptor or cord is damaged as it might cause
electrocution.
• If the power adaptor or cord is damaged, remove it from the device and the power source.
• Do NOT attempt to repair the power adaptor or cord. Contact your local vendor to order a
new one.
• Do not use the device outside, and make sure all the connections are indoors. There is a
remote risk of electric shock from lightning.
• Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your
device.
• Use only No. 26 AWG (American Wire Gauge) or larger telecommunication line cord.
• Antenna Warning! This device meets ETSI and FCC certification requirements when
using the included antenna(s). Only use the included antenna(s).
• If you wall mount your device, make sure that no electrical lines, gas or water pipes will
be damaged.

Safety Warnings
P-662H/HW-D Series User’s Guide 7
This product is recyclable. Dispose of it properly.

Safety Warnings
P-662H/HW-D Series User’s Guide
8

Contents Overview
P-662H/HW-D Series User’s Guide 9
Contents Overview
Introduction and Wizards ......................................................................................................37
Getting To Know Your ZyXEL Device ........................................................................................ 39
Introducing the Web Configurator .............................................................................................. 43
Wizard Setup for Internet Access.............................................................................................. 59
Bandwidth Management Wizard ................................................................................................ 73
Network ...................................................................................................................................79
WAN Setup ................................................................................................................................ 81
LAN Setup ............................................................................................................................... 101
Wireless LAN ............................................................................................................................113
DMZ ......................................................................................................................................... 137
Network Address Translation (NAT) Screens .......................................................................... 141
Security .................................................................................................................................155
Firewalls .................................................................................................................................. 157
Firewall Configuration ..............................................................................................................169
Content Filtering ...................................................................................................................... 191
Content Access Control ........................................................................................................... 195
Register ....................................................................................................................................211
Introduction to IPSec ............................................................................................................... 215
VPN Screens ........................................................................................................................... 221
Certificates ............................................................................................................................... 247
Advanced ..............................................................................................................................271
Static Route ............................................................................................................................. 273
Bandwidth Management ..........................................................................................................277
Dynamic DNS Setup ................................................................................................................ 287
Remote Management Configuration ........................................................................................ 291
Universal Plug-and-Play (UPnP) ............................................................................................. 303
Maintenance, Troubleshooting and Specifications ..........................................................315
System ..................................................................................................................................... 317
Logs ........................................................................................................................................323
Tools ........................................................................................................................................ 329
Diagnostic ................................................................................................................................ 335
Troubleshooting ....................................................................................................................... 337
Product Specifications ............................................................................................................ 347

Contents Overview
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Appendices and Index .........................................................................................................353

Table of Contents
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Table of Contents
About This User's Guide..........................................................................................................3
Document Conventions............................................................................................................4
Safety Warnings........................................................................................................................6
Contents Overview ...................................................................................................................9
Table of Contents....................................................................................................................11
List of Figures.........................................................................................................................23
List of Tables...........................................................................................................................31
Part I: Introduction and Wizards........................................................... 37
Chapter 1
Getting To Know Your ZyXEL Device....................................................................................39
1.1 Introducing the ZyXEL Device ............................................................................................. 39
1.1.1 Applications of the ZyXEL Device .............................................................................. 39
1.1.2 Firewall for Secure Broadband Internet Access ......................................................... 40
1.1.3 Front Panel LEDs ....................................................................................................... 41
Chapter 2
Introducing the Web Configurator ........................................................................................43
2.1 Web Configurator Overview ................................................................................................. 43
2.2 Accessing the Web Configurator ......................................................................................... 43
2.3 Resetting the ZyXEL Device ................................................................................................ 46
2.3.1 Using the Reset Button .............................................................................................. 46
2.4 Navigating the Web Configurator ........................................................................................ 47
2.4.1 Navigation Panel ........................................................................................................47
2.4.2 Status Screen ............................................................................................................. 50
2.4.3 Status: Any IP Table ................................................................................................... 53
2.4.4 Status: WLAN Status .................................................................................................. 53
2.4.5 Status: Bandwidth Status ........................................................................................... 54
2.4.6 Status: VPN Status ..................................................................................................... 54
2.4.7 Status: Packet Statistics ............................................................................................. 55
2.4.8 Changing Login Password ........................................................................................ 57

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Chapter 3
Wizard Setup for Internet Access..........................................................................................59
3.1 Introduction .......................................................................................................................... 59
3.2 Internet Access Wizard Setup ............................................................................................. 59
3.2.1 Automatic Detection ................................................................................................... 61
3.2.2 Manual Configuration ................................................................................................. 61
3.3 Wireless Connection Wizard Setup ..................................................................................... 66
3.3.1 Automatically assign a WPA key ................................................................................ 69
3.3.2 Manually assign a WPA-PSK key .............................................................................. 69
3.3.3 Manually assign a WEP key ....................................................................................... 69
Chapter 4
Bandwidth Management Wizard............................................................................................73
4.1 Introduction .......................................................................................................................... 73
4.2 Predefined Media Bandwidth Management Services .......................................................... 73
4.3 Bandwidth Management Wizard Setup ............................................................................... 74
Part II: Network....................................................................................... 79
Chapter 5
WAN Setup...............................................................................................................................81
5.1 WAN Overview ................................................................................................................... 81
5.1.1 Encapsulation ............................................................................................................. 81
5.1.2 Multiplexing ................................................................................................................ 82
5.1.3 VPI and VCI ............................................................................................................... 82
5.1.4 IP Address Assignment .............................................................................................. 82
5.1.5 Nailed-Up Connection (PPP) ..................................................................................... 83
5.1.6 NAT ............................................................................................................................ 83
5.2 Metric .................................................................................................................................. 83
5.3 Traffic Shaping ..................................................................................................................... 84
5.3.1 ATM Traffic Classes ................................................................................................... 85
5.4 Zero Configuration Internet Access ..................................................................................... 85
5.5 Internet Connection ............................................................................................................ 86
5.5.1 Configuring Advanced Internet Connection ............................................................... 87
5.6 Configuring More Connections ............................................................................................ 89
5.6.1 More Connections Edit .............................................................................................. 90
5.6.2 Configuring More Connections Advanced Setup ....................................................... 92
5.7 Traffic Redirect .................................................................................................................... 94
5.8 Configuring WAN Backup ...................................................................................................94
5.9 WAN Backup Advanced Screen ......................................................................................... 96
5.10 Dial Backup Modem Setup ............................................................................................... 99

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Chapter 6
LAN Setup..............................................................................................................................101
6.1 LAN Overview ...................................................................................................................101
6.1.1 LANs, WANs and the ZyXEL Device ........................................................................ 101
6.1.2 DHCP Setup ............................................................................................................. 102
6.1.3 DNS Server Address ................................................................................................ 102
6.1.4 DNS Server Address Assignment ............................................................................ 102
6.2 LAN TCP/IP ....................................................................................................................... 103
6.2.1 IP Address and Subnet Mask ................................................................................... 103
6.2.2 RIP Setup .................................................................................................................104
6.2.3 Multicast ...................................................................................................................104
6.2.4 Any IP .......................................................................................................................105
6.3 Configuring LAN IP ............................................................................................................ 106
6.3.1 Configuring Advanced LAN Setup ........................................................................... 107
6.4 DHCP Setup ...................................................................................................................... 108
6.5 LAN Client List ................................................................................................................... 109
6.6 LAN IP Alias .......................................................................................................................110
Chapter 7
Wireless LAN.........................................................................................................................113
7.1 Wireless Network Overview ................................................................................................113
7.2 Wireless Security Overview ................................................................................................114
7.2.1 SSID ..........................................................................................................................114
7.2.2 MAC Address Filter ...................................................................................................114
7.2.3 User Authentication ...................................................................................................114
7.2.4 Encryption .................................................................................................................115
7.2.5 One-Touch Intelligent Security Technology (OTIST) .................................................116
7.3 Wireless Performance Overview ........................................................................................116
7.3.1 Quality of Service (QoS) ...........................................................................................116
7.4 Additional Wireless Terms ..................................................................................................116
7.5 General Wireless LAN Screen ...........................................................................................117
7.5.1 No Security ................................................................................................................118
7.5.2 WEP Encryption Screen ............................................................................................119
7.5.3 WPA(2)-PSK ............................................................................................................ 120
7.5.4 WPA(2) Authentication Screen ................................................................................. 122
7.5.5 Wireless LAN Advanced Setup ................................................................................124
7.6 OTIST ................................................................................................................................125
7.6.1 Enabling OTIST ........................................................................................................ 125
7.6.2 Starting OTIST ......................................................................................................... 127
7.6.3 Notes on OTIST ....................................................................................................... 128
7.7 MAC Filter .......................................................................................................................129
7.8 WMM QoS ......................................................................................................................... 130
7.8.1 WMM QoS Example ................................................................................................. 130

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7.8.2 WMM QoS Priorities ................................................................................................. 130
7.8.3 Services ................................................................................................................... 131
7.9 QoS Screen ....................................................................................................................... 131
7.9.1 ToS (Type of Service) and WMM QoS ..................................................................... 131
7.9.2 Application Priority Configuration ............................................................................. 132
7.10 Multiple SSID (P-662HW-D Models only) ........................................................................133
7.10.1 Multiple SSID Commands ...................................................................................... 134
7.10.2 Multiple SSID Example .......................................................................................... 135
Chapter 8
DMZ........................................................................................................................................137
8.1 Introduction ........................................................................................................................ 137
8.2 Configuring DMZ .............................................................................................................. 137
8.3 DMZ Public IP Address Example ...................................................................................... 139
Chapter 9
Network Address Translation (NAT) Screens.....................................................................141
9.1 NAT Overview ................................................................................................................... 141
9.1.1 NAT Definitions ........................................................................................................ 141
9.1.2 What NAT Does ....................................................................................................... 142
9.1.3 How NAT Works ....................................................................................................... 142
9.1.4 NAT Application ........................................................................................................ 142
9.1.5 NAT Mapping Types ................................................................................................. 143
9.2 SUA (Single User Account) Versus NAT ........................................................................... 144
9.3 NAT General Setup ...........................................................................................................144
9.4 Port Forwarding .................................................................................................................145
9.4.1 Default Server IP Address ........................................................................................ 146
9.4.2 Port Forwarding: Services and Port Numbers .......................................................... 146
9.4.3 Configuring Servers Behind Port Forwarding (Example) ......................................... 146
9.5 Configuring Port Forwarding .............................................................................................147
9.5.1 Port Forwarding Rule Edit ....................................................................................... 148
9.6 Address Mapping .............................................................................................................. 149
9.6.1 Address Mapping Rule Edit .....................................................................................150
9.7 Trigger Port ......................................................................................................................151
9.8 Edit Trigger Port ............................................................................................................... 153
Part III: Security.................................................................................... 155
Chapter 10
Firewalls.................................................................................................................................157
10.1 Firewall Overview ........................................................................................................... 157

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10.2 Types of Firewalls ............................................................................................................ 157
10.2.1 Packet Filtering Firewalls ....................................................................................... 157
10.2.2 Application-level Firewalls ...................................................................................... 158
10.2.3 Stateful Inspection Firewalls ..................................................................................158
10.3 Introduction to ZyXEL’s Firewall ...................................................................................... 158
10.3.1 Denial of Service Attacks ....................................................................................... 159
10.4 Denial of Service ............................................................................................................. 159
10.4.1 Basics .....................................................................................................................159
10.4.2 Types of DoS Attacks ............................................................................................. 160
10.5 Stateful Inspection ...........................................................................................................162
10.5.1 Stateful Inspection Process ....................................................................................163
10.5.2 Stateful Inspection and the ZyXEL Device ............................................................. 164
10.5.3 TCP Security .......................................................................................................... 164
10.5.4 UDP/ICMP Security ................................................................................................ 165
10.5.5 Upper Layer Protocols ...........................................................................................165
10.6 Guidelines for Enhancing Security with Your Firewall ..................................................... 166
10.6.1 Security In General ................................................................................................ 166
10.7 Packet Filtering Vs Firewall .............................................................................................167
10.7.1 Packet Filtering: ..................................................................................................... 167
10.7.2 Firewall ................................................................................................................... 167
Chapter 11
Firewall Configuration..........................................................................................................169
11.1 Access Methods ...............................................................................................................169
11.2 Firewall Policies Overview ...............................................................................................169
11.3 Rule Logic Overview ........................................................................................................170
11.3.1 Security Ramifications ............................................................................................ 170
11.3.2 Key Fields For Configuring Rules ........................................................................... 171
11.4 Connection Direction ........................................................................................................ 171
11.4.1 LAN to WAN Rules ................................................................................................. 172
11.4.2 Alerts ...................................................................................................................... 172
11.5 General Firewall Policy .................................................................................................172
11.6 Firewall Rules Summary ................................................................................................. 173
11.6.1 Configuring Firewall Rules ................................................................................... 175
11.6.2 Customized Services .............................................................................................178
11.6.3 Configuring A Customized Service ........................................................................ 178
11.7 Example Firewall Rule .....................................................................................................179
11.8 Predefined Services .........................................................................................................183
11.9 Anti-Probing ..................................................................................................................... 185
11.10 DoS Thresholds ............................................................................................................ 186
11.10.1 Threshold Values .................................................................................................. 186
11.10.2 Half-Open Sessions .............................................................................................187
11.10.3 Configuring Firewall Thresholds ........................................................................... 187

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Chapter 12
Content Filtering...................................................................................................................191
12.1 Content Filtering Overview ............................................................................................. 191
12.2 Configuring Keyword Blocking ........................................................................................ 191
12.3 Configuring the Schedule ...............................................................................................192
12.4 Configuring Trusted Computers ...................................................................................... 193
Chapter 13
Content Access Control.......................................................................................................195
13.1 Content Access Control Overview ................................................................................... 195
13.1.1 Content Access Control WLAN Application ........................................................... 195
13.1.2 Configuration Steps ................................................................................................ 195
13.2 Activating CAC and Creating User Groups .................................................................... 196
13.2.1 Configuring Time Schedule ................................................................................... 197
13.2.2 Configuring Services ............................................................................................. 198
13.2.3 Configuring Web Site Filters ................................................................................. 200
13.2.4 Testing Web Site Access Privileges ...................................................................... 205
13.3 User Account Setup ........................................................................................................206
13.4 User Online Status .......................................................................................................... 207
13.5 Trusted Devices .............................................................................................................. 208
13.6 Trusted-external Websites ..............................................................................................208
13.7 Content Access Control Logins ....................................................................................... 209
13.7.1 User Login ..............................................................................................................209
13.7.2 Administrator Login ................................................................................................ 210
Chapter 14
Register..................................................................................................................................211
14.1 myZyXEL.com overview ...................................................................................................211
14.1.1 Subscription Services Available on the ZyXEL Device ...........................................211
14.2 Registration ..................................................................................................................... 212
14.3 Service ............................................................................................................................. 213
Chapter 15
Introduction to IPSec............................................................................................................215
15.1 VPN Overview ................................................................................................................. 215
15.1.1 IPSec ...................................................................................................................... 215
15.1.2 Security Association ............................................................................................... 215
15.1.3 Other Terminology .................................................................................................. 215
15.1.4 VPN Applications ................................................................................................... 216
15.2 IPSec Architecture ...........................................................................................................216
15.2.1 IPSec Algorithms .................................................................................................... 217
15.2.2 Key Management ................................................................................................... 217
15.3 Encapsulation .................................................................................................................. 217

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15.3.1 Transport Mode ...................................................................................................... 218
15.3.2 Tunnel Mode ......................................................................................................... 218
15.4 IPSec and NAT ................................................................................................................218
Chapter 16
VPN Screens..........................................................................................................................221
16.1 VPN/IPSec Overview .......................................................................................................221
16.2 IPSec Algorithms ............................................................................................................. 221
16.2.1 AH (Authentication Header) Protocol ..................................................................... 221
16.2.2 ESP (Encapsulating Security Payload) Protocol .................................................... 221
16.3 My IP Address ................................................................................................................. 222
16.4 Secure Gateway Address ................................................................................................ 222
16.4.1 Dynamic Secure Gateway Address ....................................................................... 223
16.5 VPN Setup Screen .........................................................................................................223
16.6 Keep Alive ....................................................................................................................... 225
16.7 VPN, NAT, and NAT Traversal .........................................................................................225
16.8 Remote DNS Server ........................................................................................................ 226
16.9 ID Type and Content ........................................................................................................227
16.9.1 ID Type and Content Examples ............................................................................. 228
16.10 Pre-Shared Key .............................................................................................................229
16.11 Editing VPN Policies .....................................................................................................229
16.12 IKE Phases ................................................................................................................... 233
16.12.1 Negotiation Mode ................................................................................................. 234
16.12.2 Diffie-Hellman (DH) Key Groups .......................................................................... 235
16.12.3 Perfect Forward Secrecy (PFS) ..........................................................................235
16.13 Configuring Advanced IKE Settings ............................................................................. 235
16.14 Manual Key Setup .........................................................................................................238
16.14.1 Security Parameter Index (SPI) .......................................................................... 238
16.15 Configuring Manual Key ............................................................................................... 238
16.16 Viewing SA Monitor ......................................................................................................241
16.17 Configuring Global Setting ............................................................................................ 242
16.18 Telecommuter VPN/IPSec Examples ............................................................................ 243
16.18.1 Telecommuters Sharing One VPN Rule Example ................................................243
16.18.2 Telecommuters Using Unique VPN Rules Example ............................................. 244
16.19 VPN and Remote Management ..................................................................................... 245
Chapter 17
Certificates ............................................................................................................................247
17.1 Certificates Overview ....................................................................................................... 247
17.1.1 Advantages of Certificates .....................................................................................248
17.2 Self-signed Certificates .................................................................................................... 248
17.3 Configuration Summary ................................................................................................... 248
17.4 My Certificates ................................................................................................................ 248

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17.5 My Certificate Import ......................................................................................................250
17.5.1 Certificate File Formats .......................................................................................... 251
17.6 My Certificate Create ...................................................................................................... 252
17.7 My Certificate Details ......................................................................................................254
17.8 Trusted CAs ................................................................................................................... 257
17.9 Trusted CA Import ......................................................................................................... 259
17.10 Trusted CA Details ......................................................................................................... 260
17.11 Trusted Remote Hosts ................................................................................................. 262
17.12 Verifying a Trusted Remote Host’s Certificate ............................................................... 264
17.12.1 Trusted Remote Host Certificate Fingerprints ...................................................... 264
17.13 Trusted Remote Hosts Import ...................................................................................... 265
17.14 Trusted Remote Host Certificate Details ..................................................................... 265
17.15 Directory Servers ........................................................................................................... 268
17.16 Directory Server Add or Edit ........................................................................................ 269
Part IV: Advanced ................................................................................ 271
Chapter 18
Static Route...........................................................................................................................273
18.1 Static Route Overview ..................................................................................................273
18.2 Configuring Static Routes ...............................................................................................274
18.2.1 Static Route Edit ................................................................................................... 275
Chapter 19
Bandwidth Management.......................................................................................................277
19.1 Bandwidth Management Overview ................................................................................. 277
19.2 Application-based Bandwidth Management .................................................................... 277
19.3 Subnet-based Bandwidth Management ..........................................................................277
19.4 Application and Subnet-based Bandwidth Management ................................................. 278
19.5 Scheduler ........................................................................................................................ 278
19.5.1 Priority-based Scheduler ........................................................................................278
19.5.2 Fairness-based Scheduler ..................................................................................... 279
19.6 Maximize Bandwidth Usage ............................................................................................ 279
19.6.1 Reserving Bandwidth for Non-Bandwidth Class Traffic .......................................... 279
19.6.2 Maximize Bandwidth Usage Example .................................................................... 279
19.6.3 Bandwidth Management Priorities ......................................................................... 281
19.7 Configuring Summary .....................................................................................................281
19.8 Bandwidth Management Rule Setup ............................................................................. 282
19.8.1 Rule Configuration ................................................................................................. 283
19.9 Bandwidth Monitor .......................................................................................................... 286

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Chapter 20
Dynamic DNS Setup .............................................................................................................287
20.1 Dynamic DNS Overview .................................................................................................287
20.1.1 DYNDNS Wildcard ................................................................................................. 287
20.2 Configuring Dynamic DNS .............................................................................................. 287
Chapter 21
Remote Management Configuration...................................................................................291
21.1 Remote Management Overview ..................................................................................... 291
21.1.1 Remote Management Limitations .......................................................................... 292
21.1.2 Remote Management and NAT ..............................................................................292
21.1.3 System Timeout .................................................................................................... 292
21.2 WWW .............................................................................................................................. 292
21.3 Telnet ...............................................................................................................................294
21.4 Configuring Telnet ............................................................................................................ 294
21.5 Configuring FTP .............................................................................................................295
21.6 SNMP .............................................................................................................................. 296
21.6.1 Supported MIBs ..................................................................................................... 297
21.6.2 SNMP Traps ........................................................................................................... 297
21.6.3 Configuring SNMP ................................................................................................. 297
21.7 Configuring DNS ............................................................................................................. 299
21.8 Configuring ICMP ............................................................................................................299
21.9 TR-069 ............................................................................................................................. 300
Chapter 22
Universal Plug-and-Play (UPnP)..........................................................................................303
22.1 Introducing Universal Plug and Play ............................................................................... 303
22.1.1 How do I know if I'm using UPnP? ......................................................................... 303
22.1.2 NAT Traversal ........................................................................................................ 303
22.1.3 Cautions with UPnP ............................................................................................... 303
22.2 UPnP and ZyXEL ............................................................................................................304
22.2.1 Configuring UPnP .................................................................................................. 304
22.3 Installing UPnP in Windows Example .............................................................................. 305
22.4 Using UPnP in Windows XP Example ............................................................................. 308
Part V: Maintenance, Troubleshooting and Specifications.............. 315
Chapter 23
System...................................................................................................................................317
23.1 General Setup and System Name ................................................................................... 317
23.1.1 System Configuration ............................................................................................ 317

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23.2 Time Setting .................................................................................................................... 319
Chapter 24
Logs ......................................................................................................................................323
24.1 Logs Overview ................................................................................................................ 323
24.1.1 Alerts and Logs ......................................................................................................323
24.2 Viewing the Logs ............................................................................................................. 323
24.3 Configuring Log Settings ................................................................................................324
24.4 SMTP Error Messages .................................................................................................... 326
24.4.1 Example E-mail Log .............................................................................................. 327
Chapter 25
Tools.......................................................................................................................................329
25.1 Firmware Upgrade .......................................................................................................... 329
25.2 Configuration Screen .......................................................................................................331
25.2.1 Backup Configuration ............................................................................................. 331
25.2.2 Restore Configuration ............................................................................................ 332
25.2.3 Back to Factory Defaults ........................................................................................ 333
25.3 Restart ............................................................................................................................. 333
Chapter 26
Diagnostic..............................................................................................................................335
26.1 General Diagnostic ......................................................................................................... 335
26.2 DSL Line Diagnostic ......................................................................................................336
Chapter 27
Troubleshooting....................................................................................................................337
27.1 Problems Starting Up the ZyXEL Device ......................................................................... 337
27.2 Problems with the LAN ....................................................................................................337
27.3 Problems with the WAN ................................................................................................... 338
27.4 Problems Accessing the ZyXEL Device .......................................................................... 338
27.4.1 Pop-up Windows, JavaScripts and Java Permissions ........................................... 339
27.4.2 ActiveX Controls in Internet Explorer .....................................................................344
Chapter 28
Product Specifications........................................................................................................347
28.1 General ZyXEL Device Specifications .............................................................................347
28.2 Wall-mounting Instructions .............................................................................................. 351
Part VI: Appendices and Index ........................................................... 353
Appendix A Setting up Your Computer’s IP Address............................................................355