ZyXEL Communications NBG-460N User Manual
NBG-460N
Wireless N Gigabit Router
Default Login Details
IP Address http://192.168.1.1
Password 1234
Firmware Version 3.60
Edition 3, 9/2009
www.zyxel.com
www.zyxel.com
Copyright © 2009
ZyXEL Communications Corporation
About This User's Guide
About This User's Guide
Intended Audience
This manual is intended for people who want to configure the NBG-460N 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.
• Supporting Disc
Refer to the included CD for support documents.
• ZyXEL Web Site
Please refer to www.zyxel.com
product certifications.
for additional support documentation and
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: techwriters@zyxel.com.tw
Customer Support
In the event of problems that cannot be solved by using this manual, you should
contact your vendor. If you cannot contact your vendor, then contact a ZyXEL
office for the region in which you bought the device. See http://www.zyxel.com/
web/contact_us.php for contact information. Please have the following information
ready when you contact an office.
• Product model and serial number.
• Warranty Information.
NBG-460N User’s Guide
3
About This User's Guide
• Date that you received your device.
Brief description of the problem and the steps you took to solve it.
4
NBG-460N User’s Guide
Document Conventions
Document Conventions
Warnings and Notes
These are how warnings and notes are shown in this User’s Guide.
Warnings tell you about things that could harm you or your
device.
Note: Notes tell you other important information (for example, other things you may
need to configure or helpful tips) or recommendations.
Syntax Conventions
• The NBG-460N may be referred to as the “NBG-460N”, the “device”, the
“product” or the “system” 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”.
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5
Document Conventions
Icons Used in Figures
Figures in this User’s Guide may use the following generic icons. The NBG-460N
icon is not an exact representation of your device.
NBG-460N Computer Notebook computer
Server DSLAM Firewall
Telephone Switch Router
Modem
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NBG-460N User’s Guide
Safety Warnings
Safety Warnings
• 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 the power adaptor or cord 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 power outlet.
• 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.
• 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.
Your product is marked with this symbol, which is known as the WEEE mark.
WEEE stands for Waste Electronics and Electrical Equipment. It means that
used electrical and electronic products should not be mixed with general
waste. Used electrical and electronic equipment should be treated separately.
NBG-460N User’s Guide
7
Safety Warnings
8
NBG-460N User’s Guide
Contents Overview
Contents Overview
Introduction ............................................................................................................................21
Getting to Know Your NBG-460N .............................................................................................. 23
The WPS Button ........................................................................................................................ 33
Introducing the Web Configurator .............................................................................................. 35
Connection Wizard .................................................................................................................... 49
Tutorials ..................................................................................................................................... 67
AP Mode .................................................................................................................................... 87
Network ...................................................................................................................................95
Wireless LAN ............................................................................................................................. 97
WAN ........................................................................................................................................ 133
LAN .......................................................................................................................................... 149
DHCP ...................................................................................................................................... 157
Network Address Translation (NAT) ........................................................................................ 163
Dynamic DNS .......................................................................................................................... 173
Security .................................................................................................................................177
Firewall .................................................................................................................................... 179
Content Filtering ...................................................................................................................... 189
IPSec VPN ............................................................................................................................... 195
Management .........................................................................................................................229
Static Route ............................................................................................................................. 231
Bandwidth Management .......................................................................................................... 235
Remote Management ..............................................................................................................247
Universal Plug-and-Play (UPnP) ............................................................................................. 253
Maintenance and Troubleshooting ....................................................................................261
System ..................................................................................................................................... 263
Logs ......................................................................................................................................... 269
Tools ........................................................................................................................................ 289
Configuration Mode ................................................................................................................. 297
Sys Op Mode ........................................................................................................................... 299
Language ................................................................................................................................. 303
Troubleshooting ....................................................................................................................... 305
Product Specifications and Wall-Mounting Instructions ........................................................... 313
Appendices and Index ......................................................................................................... 319
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Contents Overview
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NBG-460N User’s Guide
Table of Contents
Table of Contents
About This User's Guide ..........................................................................................................3
Document Conventions............................................................................................................5
Safety Warnings........................................................................................................................7
Contents Overview ...................................................................................................................9
Table of Contents....................................................................................................................11
Part I: Introduction................................................................................. 21
Chapter 1
Getting to Know Your NBG-460N .......................................................................................... 23
1.1 Overview .............................................................................................................................. 23
1.2 Applications ......................................................................................................................... 23
1.3 Wireless Applications .......................................................................................................... 24
1.3.1 Router Mode ..............................................................................................................24
1.3.2 AP Mode .................................................................................................................... 25
1.3.3 AP + Bridge ................................................................................................................ 25
1.3.4 Bridge ......................................................................................................................... 26
1.3.5 Router vs. AP vs. Bridge ............................................................................................ 29
1.4 Ways to Manage the NBG-460N ......................................................................................... 29
1.5 Good Habits for Managing the NBG-460N .......................................................................... 30
1.6 LEDs .................................................................................................................................... 30
Chapter 2
The WPS Button......................................................................................................................33
2.1 Overview .............................................................................................................................. 33
Chapter 3
Introducing the Web Configurator ........................................................................................35
3.1 Web Configurator Overview ................................................................................................ 35
3.2 Accessing the Web Configurator ......................................................................................... 35
3.3 Resetting the NBG-460N .....................................................................................................37
3.3.1 Procedure to Use the Reset Button ........................................................................... 37
3.4 Navigating the Web Configurator ..................................................................................... 37
3.5 The Status Screen in Router Mode ..................................................................................... 38
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Table of Contents
3.5.1 Navigation Panel ........................................................................................................ 41
3.5.2 Summary: Any IP Table ............................................................................................. 43
3.5.3 Summary: Bandwidth Management Monitor ........................................................... 43
3.5.4 Summary: DHCP Table ........................................................................................... 44
3.5.5 Summary: Packet Statistics .................................................................................... 45
3.5.6 Summary: VPN Monitor ............................................................................................. 46
3.5.7 Summary: Wireless Station Status ......................................................................... 47
Chapter 4
Connection Wizard .................................................................................................................49
4.1 Wizard Setup ....................................................................................................................... 49
4.2 Connection Wizard: STEP 1: System Information ............................................................... 50
4.2.1 System Name ............................................................................................................. 50
4.2.2 Domain Name ............................................................................................................ 51
4.3 Connection Wizard: STEP 2: Wireless LAN ........................................................................ 52
4.3.1 Basic (WEP) Security ................................................................................................. 53
4.3.2 Extend (WPA-PSK or WPA2-PSK) Security .............................................................. 54
4.4 Connection Wizard: STEP 3: Internet Configuration ........................................................... 55
4.4.1 Ethernet Connection .................................................................................................. 56
4.4.2 PPPoE Connection .................................................................................................... 56
4.4.3 PPTP Connection ....................................................................................................... 57
4.4.4 Your IP Address ......................................................................................................... 59
4.4.5 WAN IP Address Assignment .................................................................................... 59
4.4.6 IP Address and Subnet Mask ..................................................................................... 60
4.4.7 DNS Server Address Assignment .............................................................................. 61
4.4.8 WAN IP and DNS Server Address Assignment ......................................................... 61
4.4.9 WAN MAC Address .................................................................................................... 62
4.5 Connection Wizard: STEP 4: Bandwidth management ....................................................... 63
4.6 Connection Wizard Complete .............................................................................................. 64
Chapter 5
Tutorials...................................................................................................................................67
5.1 Overview .............................................................................................................................. 67
5.2 How to Connect to the Internet from an AP ......................................................................... 67
5.2.1 Configure Wireless Security Using WPS on both your NBG-460N and Wireless Client
67
5.2.2 Enable and Configure Wireless Security without WPS on your NBG-460N .............. 71
5.2.3 Configure Your Notebook ........................................................................................... 72
5.2.4 Using AP + Bridge Mode and WDS ........................................................................... 74
5.3 Site-To-Site VPN Tunnel Tutorial ........................................................................................ 77
5.3.1 Configuring Bob’s NBG-460N VPN Settings .............................................................. 78
5.3.2 Configuring Jack’s NBG-460N VPN Settings ............................................................. 79
5.3.3 Checking the VPN Connection ................................................................................... 82
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5.4 Bandwidth Management for your Network .......................................................................... 83
5.4.1 Configuring Bandwidth Management by Application .................................................. 83
5.4.2 Configuring Bandwidth Management by Custom Application .................................... 84
5.4.3 Configuring Bandwidth Allocation by IP or IP Range ................................................. 84
Chapter 6
AP Mode...................................................................................................................................87
6.1 Overview .............................................................................................................................. 87
6.2 Setting your NBG-460N to AP Mode ................................................................................... 87
6.3 The Status Screen ............................................................................................................... 88
6.3.1 Navigation Panel ........................................................................................................ 90
6.4 Configuring Your Settings .................................................................................................... 92
6.4.1 LAN Settings .............................................................................................................. 92
6.4.2 WLAN and Maintenance Settings .............................................................................. 93
6.5 Logging in to the Web Configurator in AP Mode ................................................................. 94
Part II: Network....................................................................................... 95
Chapter 7
Wireless LAN...........................................................................................................................97
7.1 Overview .............................................................................................................................. 97
7.2 What You Can Do ................................................................................................................ 98
7.3 What You Should Know .......................................................................................................98
7.3.1 Wireless Security Overview ....................................................................................... 98
7.4 General Wireless LAN Screen .......................................................................................... 101
7.4.1 No Security ............................................................................................................... 102
7.4.2 WEP Encryption ....................................................................................................... 103
7.4.3 WPA-PSK/WPA2-PSK ............................................................................................. 106
7.4.4 WPA/WPA2 .............................................................................................................. 107
7.5 MAC Filter Screen ............................................................................................................. 109
7.6 Wireless LAN Advanced Screen ....................................................................................... 111
7.7 Quality of Service (QoS) Screen ....................................................................................... 111
7.7.1 Application Priority Configuration ............................................................................. 113
7.8 WPS Screen ...................................................................................................................... 115
7.9 WPS Station Screen .......................................................................................................... 116
7.10 Scheduling Screen .......................................................................................................... 116
7.11 WDS Screen .................................................................................................................... 118
7.11.1 Security Mode: Static WEP .................................................................................... 119
7.11.2 Security Mode: WPA2-PSK .................................................................................... 121
7.12 Technical Reference ........................................................................................................ 121
7.12.1 Roaming .................................................................................................................121
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Table of Contents
7.12.2 Quality of Service ................................................................................................... 123
7.13 WiFi Protected Setup ....................................................................................................... 124
7.13.1 iPod Touch Web Configurator ................................................................................ 124
7.13.2 Login Screen .......................................................................................................... 125
7.13.3 System Status ........................................................................................................ 126
7.13.4 WPS in Progress .................................................................................................... 129
7.13.5 Port Forwarding ...................................................................................................... 129
7.14 Accessing the iPod Touch Web Configurator .................................................................. 131
7.14.1 Accessing the iPod Touch Web Configurator ........................................................ 131
Chapter 8
WAN .......................................................................................................................................133
8.1 Overview ............................................................................................................................ 133
8.2 What You Can Do .............................................................................................................. 133
8.3 What You Need To Know .................................................................................................. 134
8.3.1 Configuring Your Internet Connection ...................................................................... 134
8.3.2 Multicast ................................................................................................................... 135
8.3.3 IPTV STB Port .......................................................................................................... 136
8.3.4 NetBIOS over TCP/IP .............................................................................................. 138
8.3.5 Auto-Bridge ..............................................................................................................138
8.4 Internet Connection ........................................................................................................... 139
8.4.1 Ethernet Encapsulation ............................................................................................ 139
8.4.2 PPPoE Encapsulation .............................................................................................. 141
8.4.3 PPTP Encapsulation ................................................................................................ 144
8.5 Advanced WAN Screen ..................................................................................................... 146
8.6 Technical Reference .......................................................................................................... 148
8.6.1 IGMP ........................................................................................................................ 148
Chapter 9
LAN.........................................................................................................................................149
9.1 Overview ............................................................................................................................ 149
9.2 What You Can Do .............................................................................................................. 149
9.3 What You Need To Know .................................................................................................. 150
9.3.1 IP Pool Setup ........................................................................................................... 150
9.3.2 LAN TCP/IP .............................................................................................................. 150
9.4 LAN IP Screen ................................................................................................................... 150
9.5 LAN IP Alias ..................................................................................................................... 151
9.6 Advanced LAN Screen ...................................................................................................... 152
9.7 Technical Reference .......................................................................................................... 153
9.7.1 LANs, WANs and the ZyXEL Device ....................................................................... 153
9.7.2 Any IP ....................................................................................................................... 154
Chapter 10
DHCP......................................................................................................................................157
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Table of Contents
10.1 Overview .......................................................................................................................... 157
10.2 What You Can Do ............................................................................................................ 157
10.3 What You Need To Know ................................................................................................ 157
10.4 DHCP General Screen .................................................................................................... 158
10.5 DHCP Advanced Screen .............................................................................................. 158
10.6 Client List Screen ............................................................................................................ 160
Chapter 11
Network Address Translation (NAT) ...................................................................................163
11.1 Overview ....................................................................................................................... 163
11.2 What You Can Do ............................................................................................................ 164
11.3 General NAT Screen ....................................................................................................... 164
11.4 NAT Application Screen ................................................................................................ 165
11.4.1 Game List Example ................................................................................................ 168
11.4.2 Configuring Servers Behind Port Forwarding Example .......................................... 168
11.5 NAT Advanced Screen .................................................................................................... 169
11.5.1 Trigger Port Forwarding Example .......................................................................... 171
11.5.2 Two Points To Remember About Trigger Ports ..................................................... 172
Chapter 12
Dynamic DNS ........................................................................................................................ 173
12.1 Overview ......................................................................................................................... 173
12.2 What You Can Do ............................................................................................................ 173
12.3 What You Need To Know ................................................................................................ 173
12.3.1 DynDNS Wildcard .................................................................................................. 173
12.4 Dynamic DNS Screen .................................................................................................... 174
Part III: Security.................................................................................... 177
Chapter 13
Firewall...................................................................................................................................179
13.1 Overview ........................................................................................................................ 179
13.2 What You Can Do ............................................................................................................ 179
13.3 What You Need To Know ................................................................................................ 180
13.3.1 About the NBG-460N Firewall ................................................................................ 180
13.3.2 Triangle Routes ...................................................................................................... 180
13.3.3 Triangle Routes and IP Alias .................................................................................. 181
13.4 General Firewall Screen ............................................................................................... 182
13.5 Services Screen .............................................................................................................. 182
13.5.1 The Add Firewall Rule Screen ............................................................................... 185
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Table of Contents
Chapter 14
Content Filtering ...................................................................................................................189
14.1 Overview .......................................................................................................................... 189
14.2 What You Can Do ............................................................................................................ 189
14.3 What You Need To Know ................................................................................................ 189
14.3.1 Content Filtering Profiles ........................................................................................ 189
14.4 Filter Screen .................................................................................................................... 191
14.5 Schedule Screen ............................................................................................................. 193
14.6 Technical Reference ........................................................................................................ 193
14.6.1 Customizing Keyword Blocking URL Checking ...................................................... 194
Chapter 15
IPSec VPN..............................................................................................................................195
15.1 Overview .......................................................................................................................... 195
15.2 What You Can Do ............................................................................................................ 195
15.3 What You Need To Know ................................................................................................ 196
15.3.1 IKE SA (IKE Phase 1) Overview ............................................................................ 196
15.3.2 IPSec SA (IKE Phase 2) Overview ........................................................................ 197
15.4 The General Screen ........................................................................................................198
15.4.1 VPN Rule Setup (Basic) ......................................................................................... 199
15.4.2 VPN Rule Setup (Advanced) .................................................................................. 205
15.4.3 VPN Rule Setup (Manual) ...................................................................................... 213
15.5 The SA Monitor Screen ................................................................................................... 218
15.6 Technical Reference ........................................................................................................ 219
15.6.1 VPN and Remote Management ............................................................................. 219
15.6.2 IKE SA Proposal .................................................................................................... 219
15.6.3 Diffie-Hellman (DH) Key Exchange ........................................................................ 220
15.6.4 Authentication ........................................................................................................ 221
15.6.5 Negotiation Mode ................................................................................................... 222
15.6.6 VPN, NAT, and NAT Traversal .............................................................................. 223
15.6.7 IPSec Protocol ....................................................................................................... 224
15.6.8 Encapsulation ......................................................................................................... 224
15.6.9 IPSec SA Proposal and Perfect Forward Secrecy ................................................. 225
15.6.10 Additional IPSec VPN Topics ............................................................................... 225
Part IV: Management ........................................................................... 229
Chapter 16
Static Route...........................................................................................................................231
16.1 Overview .......................................................................................................................... 231
16.2 What You Can Do ............................................................................................................ 231
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Table of Contents
16.3 IP Static Route Screen ....................................................................................................232
16.3.1 Static Route Setup Screen ................................................................................... 233
Chapter 17
Bandwidth Management.......................................................................................................235
17.1 Overview ......................................................................................................................... 235
17.2 What You Can Do ............................................................................................................ 235
17.3 What You Need To Know ................................................................................................ 236
17.4 General Configuration Screen ........................................................................................ 236
17.5 Advanced Configuration ................................................................................................. 238
17.5.1 Rule Configuration with the Pre-defined Service ................................................ 240
17.5.2 Rule Configuration: User Defined Service Rule Configuration ............................ 241
17.6 Monitor Screen ............................................................................................................. 242
17.7 Technical References ......................................................................................................243
17.7.1 Predefined Bandwidth Management Services ....................................................... 243
17.7.2 Default Bandwidth Management Classes and Priorities ........................................ 244
17.7.3 Bandwidth Management Priorities ......................................................................... 245
Chapter 18
Remote Management............................................................................................................ 247
18.1 Overview .......................................................................................................................... 247
18.2 What You Can Do ............................................................................................................ 247
18.3 What You Need To Know ................................................................................................ 248
18.3.1 Remote Management Limitations .......................................................................... 248
18.3.2 Remote Management and NAT ............................................................................. 248
18.3.3 System Timeout ..................................................................................................... 248
18.4 WWW Screen ................................................................................................................ 249
18.5 Telnet Screen .................................................................................................................. 250
18.6 FTP Screen ..................................................................................................................... 250
18.7 DNS Screen .................................................................................................................. 251
Chapter 19
Universal Plug-and-Play (UPnP).......................................................................................... 253
19.1 Overview ......................................................................................................................... 253
19.2 What You Can Do ............................................................................................................ 253
19.3 What You Need to Know ................................................................................................. 253
19.3.1 NAT Traversal ........................................................................................................ 253
19.3.2 Cautions with UPnP ............................................................................................... 254
19.4 UPnP Screen ................................................................................................................... 254
19.5 Technical Reference ........................................................................................................ 255
19.5.1 Using UPnP in Windows XP Example ................................................................... 255
19.5.2 Web Configurator Easy Access ............................................................................. 258
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Table of Contents
Part V: Maintenance and Troubleshooting........................................ 261
Chapter 20
System ...................................................................................................................................263
20.1 Overview .......................................................................................................................... 263
20.2 What You Can Do ............................................................................................................ 263
20.3 System General Screen ................................................................................................. 263
20.4 Time Setting Screen ........................................................................................................ 265
Chapter 21
Logs .......................................................................................................................................269
21.1 Overview .......................................................................................................................... 269
21.2 What You Can Do ............................................................................................................ 269
21.3 What You Need to Know ................................................................................................. 269
21.4 View Log Screen ............................................................................................................. 270
21.5 Log Settings ..................................................................................................................... 271
21.6 Technical Reference ........................................................................................................ 274
21.6.1 Log Descriptions .................................................................................................... 274
Chapter 22
Tools ......................................................................................................................................289
22.1 Overview .......................................................................................................................... 289
22.2 What You Can Do ............................................................................................................ 289
22.3 Firmware Upload Screen ................................................................................................. 289
22.4 Configuration Screen ....................................................................................................... 292
22.4.1 Backup Configuration ............................................................................................. 292
22.4.2 Restore Configuration ............................................................................................ 292
22.4.3 Back to Factory Defaults ........................................................................................ 294
22.5 Restart Screen ................................................................................................................. 294
22.6 Wake On LAN .................................................................................................................. 295
22.7 Green ............................................................................................................................... 295
Chapter 23
Configuration Mode..............................................................................................................297
23.1 Overview .......................................................................................................................... 297
23.2 What You Can Do ............................................................................................................ 297
23.3 General Screen ............................................................................................................... 297
Chapter 24
Sys Op Mode .........................................................................................................................299
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24.1 Overview .......................................................................................................................... 299
24.2 What You Can Do ............................................................................................................ 299
24.3 What You Need to Know ................................................................................................. 299
NBG-460N User’s Guide
Table of Contents
24.4 General Screen ............................................................................................................... 301
Chapter 25
Language...............................................................................................................................303
25.1 Language Screen ............................................................................................................ 303
Chapter 26
Troubleshooting....................................................................................................................305
26.1 Power, Hardware Connections, and LEDs ...................................................................... 305
26.2 NBG-460N Access and Login .......................................................................................... 306
26.3 Internet Access ................................................................................................................ 308
26.4 Resetting the NBG-460N to Its Factory Defaults ............................................................. 310
26.5 Wireless Router/AP Troubleshooting .............................................................................. 311
26.6 Advanced Features .........................................................................................................312
Chapter 27
Product Specifications and Wall-Mounting Instructions ..................................................313
Part VI: Appendices and Index ........................................................... 319
Appendix A Pop-up Windows, JavaScripts and Java Permissions ...................................... 321
Appendix B IP Addresses and Subnetting ........................................................................... 329
Appendix C Setting up Your Computer’s IP Address........................................................... 339
27.0.1 Verifying Settings ................................................................................................... 356
Appendix D Wireless LANs ..................................................................................................357
27.0.2 WPA(2)-PSK Application Example ......................................................................... 367
27.0.3 WPA(2) with RADIUS Application Example ........................................................... 367
Appendix E Services ............................................................................................................369
Appendix F Legal Information ..............................................................................................373
Index.......................................................................................................................................377
NBG-460N User’s Guide
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Table of Contents
20
NBG-460N User’s Guide
PART I
Introduction
Getting to Know Your NBG-460N (23)
The WPS Button (33)
Introducing the Web Configurator (35)
Connection Wizard (49)
AP Mode (87)
Tutorials (67)
21
22
CHAPTER 1
Getting to Know Your NBG-460N
1.1 Overview
This chapter introduces the main features and applications of the NBG-460N.
The NBG-460N extends the range of your existing wired network without
additional wiring, providing easy network access to mobile users. You can set up a
wireless network with other IEEE 802.11b/g/n compatible devices.
A range of services such as a firewall, IPSec VPN and content filtering are also
available for secure Internet computing. You can use media bandwidth
management to efficiently manage traffic on your network. Bandwidth
management features allow you to prioritize time-sensitive or highly important
applications such as Voice over the Internet (VoIP).
Additionally, you can configure your NBG-460N to have a port for your Internet
Protocol Television (IPTV) service (refer to Section 8.3.3 on page 136 for more
information.)
1.2 Applications
Your can create the following networks using the NBG-460N:
• Wired. You can connect network devices via the Ethernet ports of the NBG460N so that they can communicate with each other and access the Internet.
• Wireless. The NBG-460N works in four wireless operating modes. See Section
1.3 on page 24 for details on this.
• WAN. Connect to a broadband modem/router, such as a VDSL router, for
Internet access.
NBG-460N User’s Guide
23
Chapter 1 Getting to Know Your NBG-460N
• IPTV. Connect a Set-Top Box (STB) to your NBG-460N to watch Live TV and/or
Video On Demand (VOD) on your television screen.
Figure 1 NBG-460N Network
LAN 1
LAN 2
LAN 3
NBG460N
STB
WLAN
1.3 Wireless Applications
The NBG-460N also uses MIMO (Multiple-Input, Multiple-Output) antenna
technology and Gigabit Ethernet ports to deliver high-speed wireless networking.
It can be configured to use the following WLAN operating modes:
• Router Mode
• Access Point (AP) Mode
•AP + Bridge
•Bridge
Applications for each operating mode are shown below.
1.3.1 Router Mode
TV
24
Select Router Mode if you need to route traffic between your network and
another network such as the Internet, and require important network services
such as a firewall or bandwidth management.
NBG-460N User’s Guide
The following figure shows computers in a WLAN connecting to the NBG-460N (A),
which has a DSL connection to the Internet. The NBG-460N is set to Router
Mode and has router features such as a built-in firewall (B).
Figure 2 Secure Wireless Internet Access in Router Mode
1.3.2 AP Mode
Chapter 1 Getting to Know Your NBG-460N
A
B
Select AP Mode if you already have a router or gateway on your network which
provides network services such as a firewall or bandwidth management.
The following figure shows computers in a WLAN connecting to the NBG-460N,
which acts as an access point (A). The NBG-460N allows the wireless computers
to share the same Internet access as the other computers connected to the router
(B) on the same network.
Figure 3 Wireless Internet Access in AP Mode
1.3.3 AP + Bridge
A
B
In AP + Bridge mode, the NBG-460N supports both AP and bridge connection at
the same time.
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Using AP + Bridge mode, your NBG-460N can extend the range of the WLAN. In
the figure below, A and B act as AP + Bridge devices that forward traffic between
associated wireless workstations and the wired LAN.
When the NBG-460N is in AP + Bridge mode, security between APs (the Wireless
Distribution System or WDS) is independent of the security between the wireless
stations and the AP. If you do not enable WDS security, traffic between APs is not
encrypted. When WDS security is enabled, both APs must use the same preshared key.
Unless specified, the term “security settings” refers to the traffic between the
wireless stations and the NBG-460N.
Figure 4 AP + Bridge Application
1.3.4 Bridge
The NBG-460N can act as a wireless network bridge and establish wireless links
with other APs. In the figure below, the NBG-460Ns (A and B) are connected to
independent wired networks and have a bridge connection (A can communicate
with B) at the same time. Same as in AP + Bridge mode, security between bridged
APs (the Wireless Distribution System or WDS) is independent of the security
between the wired networks and their respective APs. If you do not enable WDS
security, traffic between APs is not encrypted. When WDS security is enabled,
both APs must use the same pre-shared key.
A
B
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Once the security settings of peer sides match one another, the connection
between devices is made.
Figure 5 Bridge Application
In the example below, when both NBG-460Ns are in Bridge mode, they form a
WDS (Wireless Distribution System) allowing the computers in LAN 1 to connect to
the computers in LAN 2.
Figure 6 Bridging Example
Be careful to avoid bridge loops when you enable bridging in the NBG-460N.
Bridge loops cause broadcast traffic to circle the network endlessly, resulting in
possible throughput degradation and disruption of communications. The following
examples show two network topologies that can lead to this problem:
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• If two or more NBG-460Ns (in bridge mode) are connected to the same hub.
Figure 7 Bridge Loop: Two Bridges Connected to Hub
• If your NBG-460N (in bridge mode) is connected to a wired LAN while
communicating with another wireless bridge that is also connected to the same
wired LAN.
Figure 8 Bridge Loop: Bridge Connected to Wired LAN
To prevent bridge loops, ensure that your NBG-460N is not set to bridge mode
while connected to both wired and wireless segments of the same LAN.
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1.3.5 Router vs. AP vs. Bridge
The following table shows which features are available in Router mode, AP
mode or Bridge.
Table 1 Features Available in Router Mode vs. AP Mode
FEATURE
DHCP
This allows individual clients to obtain IP addresses
at start-up from a DHCP server.
Firewall
This establishes a network security barrier,
protecting your network from attacks and
controlling access between your network and the
Internet.
Bandwidth Management
This allows you to allocate network bandwidth to
specific applications and or subnets.
Any IP
ROUTER
MODE
YES NO NO
YES NO NO
YES NO NO
YES NO NO
AP MODE BRIDGE
This allows a computer to access the NBG-460N
when the IP addresses of the computer and the
NBG-460N are not in the same subnet.)
VPN
A virtual private network (VPN) provides secure
communications between sites without the expense
of leased site-to-site lines.
Wireless
This allows two or more devices to communicate
without wires, based on IEEE 802.11 wireless
standards.
YES NO NO
YES YES YES
1.4 Ways to Manage the NBG-460N
Use any of the following methods to manage the NBG-460N.
• Web Configurator. This is recommended for everyday management of the NBG460N using a (supported) web browser.
• Command Line Interface. Line commands are mostly used for troubleshooting
by service engineers.
• FTP. Use File Transfer Protocol for firmware upgrades and configuration backup/
restore.
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1.5 Good Habits for Managing the NBG-460N
Do the following things regularly to make the NBG-460N more secure and to
manage the NBG-460N more effectively.
• Change the password. Use a password that’s not easy to guess and that
consists of different types of characters, such as numbers and letters.
• Write down the password and put it in a safe place.
• Back up the configuration (and make sure you know how to restore it).
Restoring an earlier working configuration may be useful if the device becomes
unstable or even crashes. If you forget your password, you will have to reset
the NBG-460N to its factory default settings. If you backed up an earlier
configuration file, you would not have to totally re-configure the NBG-460N. You
could simply restore your last configuration.
1.6 LEDs
Figure 9 Front Panel
The following table describes the LEDs.
Table 2 Front Panel LEDs
LED COLOR STATUS DESCRIPTION
POWER Green On The NBG-460N is receiving power and
functioning properly.
Off The NBG-460N is not receiving power.
LAN 1-4 Green On The NBG-460N has a successful 10/100MB
Ethernet connection.
Blinking The NBG-460N is sending/receiving data.
Amber On The NBG-460N has a successful 1000MB
Ethernet connection.
Blinking The NBG-460N is sending/receiving data.
Off The LAN is not connected.
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