ZyXEL Communications NBG4104 User Manual
NBG4104
Wireless N-lite Managed Router
Default Login Details
IP Address http://192.168.1.1
User Name admin
Password 1234
Firmware Version 1.0
Edition 1, 11/2011
www.zyxel.com
www.zyxel.com
Copyright © 2011
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 NBG4104 using the Web Configurator.
Tips for Reading User’s Guides On-Screen
When reading a ZyXEL User’s Guide On-Screen, keep the following in mind:
• If you don’t already have the latest version of Adobe Reader, you can download it from http://
www.adobe.com.
• Use the PDF’s bookmarks to quickly navigate to the areas that interest you. Adobe Reader’s
bookmarks pane opens by default in all ZyXEL User’s Guide PDFs.
• If you know the page number or know vaguely which page-range you want to view, you can
enter a number in the toolbar in Reader, then press [ENTER] to jump directly to that page.
• Type [CTRL]+[F] to open the Adobe Reader search utility and enter a word or phrase. This can
help you quickly pinpoint the information you require. You can also enter text directly into the
toolbar in Reader.
• To quickly move around within a page, press the [SPACE] bar. This turns your cursor into a
“hand” with which you can grab the page and move it around freely on your screen.
• Embedded hyperlinks are actually cross-references to related text. Click them to jump to the
corresponding section of the User’s Guide PDF.
Related Documentation
•Quick Start Guide
The Quick Start Guide is designed to help you get your NBG4104 up and running right away. It
contains information on setting up your network and configuring for Internet access.
•Support Disc
Refer to the included CD for support documents.
NBG4104 User’s Guide
3
Document Conventions
Warnings and Notes
These are how warnings and notes are shown in this User’s Guide.
Note: Notes tell you other important information (for example, other things you may
need to configure or helpful tips) or recommendations.
Syntax Conventions
• The NBG4104 may be referred to as the “NBG4104”, 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”.
Document Conventions
Warnings tell you about things that could harm you or your device.
4
NBG4104 User’s Guide
Document Conventions
Icons Used in Figures
Figures in this User’s Guide may use the following generic icons. The NBG4104 icon is not an exact
representation of your device.
NBG4104 Computer Notebook computer
Server DSLAM Firewall
Telephone Switch Router
Modem
NBG4104 User’s Guide
5
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
• 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
• 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
• Do NOT allow anything to rest on the power adaptor or cord and do NOT place the product where anyone can
• 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
• 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
• If you wall mount your device, make sure that no electrical lines, gas or water pipes will be damaged.
Safety Warnings
from lightning.
points or other risks. ONLY qualified service personnel should service or disassemble this device. Please
contact your vendor for further information.
230V AC in Europe).
walk on the power adaptor or cord.
electric shock from lightning.
antenna(s). Only use the included antenna(s).
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.
6
NBG4104 User’s Guide
Contents Overview
Contents Overview
User’s Guide ...........................................................................................................................15
Introduction ................................................................................................................................17
The WPS Button ........................................................................................................................20
Introducing the Web Configurator ..............................................................................................21
Monitor .......................................................................................................................................25
NBG4104 Modes ................................ .... ... ... ... ... .... ... .................................................................31
Router Mode ..............................................................................................................................32
Access Point Mode ....................................................................................................................38
Tutorials .....................................................................................................................................45
Technical Reference ..............................................................................................................53
Wireless LAN ............................................ ... ... ... .... ... ... ... .............................................. .............55
WAN ....................................................... ...................................................... ..............................69
LAN ............................................................................................................................................81
DHCP Server .............................................................................................................................85
NAT ............................................................................................................................................89
DDNS ................................. .............................................................. ..........................................95
Static Route ................................................................................................................................97
VLAN Operation .......................................................................................................................101
Interface Group ........................................................................................................................107
Firewall ...................................... ................................ ................................... ............................ 111
Content Filtering .......................................................................................................................117
Remote Management ...............................................................................................................121
Bandwidth Management ................................................. .... ... ... ... .... ... ... ..................................130
Universal Plug-and-Play (UPnP) ..............................................................................................136
Maintenance .................................... ....... ...... ...... ....... ...... ....... ...... ....... ...... ....... ... ...... ...............143
Troubleshooting .......................................................................................................................151
NBG4104 User’s Guide
7
Contents Overview
8
NBG4104 User’s Guide
Table of Contents
Table of Contents
About This User's Guide..........................................................................................................3
Document Conventions ...........................................................................................................4
Safety Warnings........................................................................................................................6
Contents Overview ..................................................................................................................7
Table of Contents .....................................................................................................................9
Part I: User’s Guide ................................................................................15
Chapter 1
Introduction.............................................................................................................................17
1.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................17
1.2 Applications ............................................ ... ... .... ... ... ... .............................................. .............17
1.3 Ways to Manage the NBG4104 .......................................... ... .... ... ... ... ... .... ... .......................17
1.4 Good Habits for Managing the NBG4104 ............................................................................17
1.5 LEDs ............................................ .... ... ... ... ... .... ............................................. ... ... .................18
Chapter 2
The WPS Button......................................................................................................................20
2.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................20
Chapter 3
Introducing the Web Configurator ........................................................................................21
3.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................21
3.2 Accessing the Web Configurator ..........................................................................................21
3.2.1 Login Screen ............................. ... ............................................. ... .... ... ... ... .... .............22
3.2.2 Password Screen ................................................................... ... ... .... ... ... ... .................22
3.3 Resetting the NBG4104 ............................ ...........................................................................23
3.3.1 How to Use the RESET Button ...................................................................................23
Chapter 4
Monitor.....................................................................................................................................25
4.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................25
4.2 What You Can Do ............................................... ... ... .... ... ... ... .... ... ... ... .................................25
4.3 The Log Screen ....................................................................................................................25
4.3.1 View Log ....................... ... ... .... ... ... ............................................. ... .... ... ... ....................26
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Table of Contents
4.3.2 Log Settings ..................................................... .... ... ... .................................................26
4.4 DHCP Table .................... .... ... ............................................. ... .... ... ... ... ... ..............................26
4.5 Packet Statistics ........................................ ............................................. .... ... ... ... .... ... ..........28
4.6 WLAN Station Status .............. ... ... .... ... ... ... ... .............................................. ... ... ... .... ... ..........28
Chapter 5
NBG4104 Modes .....................................................................................................................31
5.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................31
5.1.1 Device Modes ............................ ... ... ... .... ... ... ... .... ... ... .................................................31
Chapter 6
Router Mode............................................................................................................................32
6.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................32
6.2 Router Mode Status Screen .................................................................................................33
6.2.1 Navigation Panel .................................... ....................................................................35
Chapter 7
Access Point Mode.................................................................................................................38
7.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................38
7.2 What You Can Do ............................................... ... ... .... ... ... ... .... ... ... ... .................................38
7.3 What You Need to Know ........ ... ... .... ... .................................................................................38
7.3.1 Setting your NBG4104 to AP Mode ........................................................................... .39
7.3.2 Accessing the Web Configurator in Access Point Mode ......................... ... .... ... ... ... ... .39
7.3.3 Configuring your WLAN and Maintenance Settings ...................................................39
7.4 AP Mode Status Screen .......................................................................................................40
7.5 LAN Screen .. ... ... .... ... ... ... .... ... ............................................. ... .... ... ... ... ... ..............................43
Chapter 8
Tutorials...................................................................................................................................45
8.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................45
8.2 Set Up a Wireless Network with WPS ..................................................................................45
8.2.1 Push Button Configuration (PBC) ........................ ... ... ... .... ... ... ... ... .... ... ... ... .................45
8.2.2 PIN Configuration ......... ... ... .... ... .................................................................................46
8.3 Configure Wireless Security without WPS ...........................................................................47
8.3.1 Configure Your Notebook ...........................................................................................49
8.4 Using Multiple SSIDs on the NBG4104 ................................................................................50
8.4.1 Configuring Security Settings of Multiple SSIDs .........................................................51
Part II: Technical Reference...................................................................53
Chapter 9
Wireless LAN...........................................................................................................................55
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NBG4104 User’s Guide
Table of Contents
9.1 Overview ............................. ... ... ............................................. .... ... ... ... ... .... ... .......................55
9.2 What You Can Do ............................................... ... ... .... ... ... ... .... ... ... ... .................................55
9.3 What You Should Know .......................................................................................................56
9.4 General Wireless LAN Screen .............................. ... .... ... ... ... .... ... ... ... .................................58
9.5 Wireless Security ............................................. ... ... ... .... ... ....................................................60
9.5.1 No Security ......................................... .... ... ... ............................................. .... ... ... ... ....60
9.5.2 WEP Encryption ........................... ... ... .... ....................................................................60
9.5.3 WPA-PSK/WPA2-PSK .. ................ ..............................................................................62
9.6 MAC Filter .............................. ............................................. ... .... ... ... ... ... ..............................62
9.7 Wireless LAN Advanced Screen ......................... ... ... .... ... ... ... .... ... ... ... ... .... ... ... ... .... ... ... ... ... .63
9.8 Quality of Service (QoS) Screen ..........................................................................................65
9.9 WPS Screen .............................. ... .... ... ... ... ... .... ............................................. ... ... .... ... ..........65
9.10 WPS Station Screen ...........................................................................................................66
9.11 Scheduling Screen .............................................................................................................67
Chapter 10
WAN .........................................................................................................................................69
10.1 Overview ............................................................................................................................69
10.2 What You Can Do ..............................................................................................................69
10.3 What You Need To Know ...................................................................................................69
10.3.1 Configuring Your Internet Connection .......................................................................70
10.3.2 Multicast ...................................................................................................................71
10.4 Management WAN .............................................................................................................72
10.4.1 Add/Edit Internet Connection ....................................................................................73
10.4.2 Ethernet Encapsulation ............................................................................................73
10.4.3 PPPoE Encapsulation ..............................................................................................75
10.4.4 Bridge Encapsulation ................................................................................................78
10.5 Advanced WAN Screen .....................................................................................................79
Chapter 11
LAN ..........................................................................................................................................81
11.1 Overview ............................................................................................................................81
11.2 What You Can Do ...............................................................................................................81
11.3 What You Need To Know ....................................................................................................82
11.3.1 IP Pool Setup ............................................................................................................82
11.3.2 LAN TCP/IP ..............................................................................................................82
11.3.3 IP Alias ......................................................................................................................82
11.4 LAN IP Screen ....................................................................................................................83
11.5 IP Alias Screen ...................................................................................................................83
Chapter 12
DHCP Server ...........................................................................................................................85
12.1 Overview ............................................................................................................................85
NBG4104 User’s Guide
11
Table of Contents
12.2 What You Can Do ..............................................................................................................85
12.3 What You Need To Know ...................................................................................................85
12.4 The DHCP General Screen ................................................................................................86
12.5 The DHCP Advanced Screen ...........................................................................................87
Chapter 13
NAT...........................................................................................................................................89
13.1 Overview ...........................................................................................................................89
13.2 What You Can Do ..............................................................................................................90
13.3 What You Need To Know ...................................................................................................90
13.4 The NAT General Screen ........................................ .... ... ... ... .... ... ... ... ... .... ... .......................92
13.5 The NAT Application Screen .............................................................................................92
Chapter 14
DDNS........................................................................................................................................95
14.1 Overview ............................................................................................................................95
14.2 What You Need To Know ...................................................................................................95
14.3 The DDNS General Screen ........................................ ... ... ... .... ... ... ... ... .... ... ... ....................96
Chapter 15
Static Route.............................................................................................................................97
15.1 Overview ...........................................................................................................................97
15.2 IP Static Route Screen ......................................................................................................98
Chapter 16
VLAN Operation....................................................................................................................101
16.1 Overview ..........................................................................................................................101
16.2 What You Can Do ............................................................................................................101
16.3 LAN To WAN Screen ........................................................................................................101
16.3.1 Add/Edit VLAN Rule ...............................................................................................103
16.4 WAN To LAN Screen ........................................................................................................105
Chapter 17
Interface Group.....................................................................................................................107
17.1 Overview ..........................................................................................................................107
17.2 The Interface Group Screen ........................... ... ... ............................................. .... ... ... ... ..107
17.2.1 Interface Group Configuration ................................................................................108
Chapter 18
Firewall .................................................................................................................................. 111
18.1 Overview ........................................................................................................................ 111
18.2 What You Can Do ............................................................................................................ 111
18.3 What You Need To Know .................................................................................................112
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NBG4104 User’s Guide
Table of Contents
18.4 The Firewall General Screen ....... ... ... ... .........................................................................113
18.5 The Access Control Rule Screen .....................................................................................114
18.5.1 Access Control Rule Edit .......................................................................................115
18.6 The Services Screen ......... ... ... ................................................. ... ... ..................................116
Chapter 19
Content Filtering...................................................................................................................117
19.1 Overview ..........................................................................................................................117
19.2 What You Need To Know .................................................................................................117
19.3 Content Filter .................................................................................................................... 118
19.4 Technical Reference ...... ....... ... ....... ...... ...... ....... ...... ....... ...... ....... ... ...... ....... ...... ....... ........119
19.4.1 Customizing Keyword Blocking URL Checking ...................................................... 119
Chapter 20
Remote Management............................................................................................................121
20.1 Overview ..........................................................................................................................121
20.2 What You Need to Know ..................................................................................................121
20.2.1 Remote Management and NAT ..............................................................................121
20.3 What You Can Do ............................................................................................................121
20.4 The WWW Screen .........................................................................................................122
20.5 The Telnet Screen ............................................................................................................123
20.6 The FTP Screen ......... ... .... ................................................ ... .... ........................................124
20.7 The SNMP Screen ...........................................................................................................124
20.8 The TR069 Screen ...........................................................................................................127
20.9 The Import CA Screen .....................................................................................................128
Chapter 21
Bandwidth Management.......................................................................................................130
21.1 Overview ..........................................................................................................................130
21.2 What You Can Do ............................................................................................................130
21.3 What You Need To Know .................................................................................................130
21.4 The Bandwidth MGMT General Screen ...........................................................................131
21.5 The Bandwidth MGMT Advanced Screen ...... ..................................................................132
21.5.1 User Defined Service Rule Configuration ..............................................................134
21.5.2 Services and Port Numbers .................................. ...................... ....................... .....135
Chapter 22
Universal Plug-and-Play (UPnP)..........................................................................................136
22.1 Overview ..........................................................................................................................136
22.2 What You Need to Know ..................................................................................................136
22.2.1 NAT Traversal .........................................................................................................136
22.2.2 Cautions with UPnP ................................................................................................136
22.3 UPnP Screen ...................................................................................................................137
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Table of Contents
22.4 Technical Reference ...... ....... ... ....... ...... ...... ....... ...... ....... ...... ....... ... ...... ....... ...... ....... ........137
22.4.1 Using UPnP in Windows XP Example ....................................................................137
22.4.2 Web Configurator Easy Access ......................................... ..................................... 140
Chapter 23
Maintenance..........................................................................................................................143
23.1 Overview ..........................................................................................................................143
23.2 What You Can Do ............................................................................................................143
23.3 General Screen ...............................................................................................................143
23.4 Password Screen .............................................................................................................144
23.5 Time Setting Screen .........................................................................................................145
23.6 Firmware Upgrade Screen ................................................................ ... .... ... ... ... .... ... ... ..... 146
23.7 Configuration Backup/Restore Screen .............................................................................147
23.8 Restart Screen .................................................................................................................148
23.9 System Operation Mode ..................................................................................................149
23.10 Sys OP Mode Screen .....................................................................................................150
Chapter 24
Troubleshooting....................................................................................................................151
24.1 Overview ..........................................................................................................................151
24.2 Power, Hardware Connections, and LEDs ............................... ........................................151
24.3 NBG4104 Access and Login ............................................................................................152
24.4 Internet Access ................................................................................................................154
24.5 Resetting the NBG4104 to Its Factory Defaults ...............................................................155
24.6 Wireless Router/AP Troubleshooting ...............................................................................155
Appendix A Product Specifications......................................................................................159
24.7 Wall-mounting Instructions ...............................................................................................161
Appendix B Pop-up Windows, JavaScript and Java Permissions.......................................163
Appendix C IP Addresses and Subnetting...........................................................................175
Appendix D Setting Up Your Computer’s IP Address..........................................................185
Appendix E Wireless LANs..................................................................................................213
Appendix F Common Services............................................................................................227
Appendix G Legal Information.............................................................................................231
Index ......................................................................................................................................241
14
NBG4104 User’s Guide
PART I
User’s Guide
15
16
1.1 Overview
This chapter introduces the main features and applications of the NBG4104.
The NBG4104 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 and content filtering are also available for secure Internet
computing.
1.2 Applications
CHAPTER 1
Introduction
Your can create the following networks using the NBG4104:
• Wired. You can connect network devices via the Ethernet ports of the NBG4104 so that they can
communicate with each other and access the Internet.
• Wireless. Wireless clients can connect to the NBG4104 to access network resources.
• WAN. Connect to a broadband modem/router for Internet access.
• WPS. Create an instant network connection with another WPS-compatible device, sharing your
network connection with it.
1.3 Ways to Manage the NBG4104
Use any of the following methods to manage the NBG4104.
• WPS (Wi-Fi Protected Setup). You can use the WPS button or the WPS section of the Web
Configurator to set up a wireless network with your ZyXEL Device.
• Web Configurator. This is recommended for everyday management of the NBG4104 using a
(supported) web browser.
1.4 Good Habits for Managing the NBG4104
Do the following things regularly to make the NBG4104 more secure and to manage the NBG4104
more effectively.
NBG4104 User’s Guide 17
Chapter 1 Introduction
Power
LAN 1-4
WAN
WLAN
WPS
• 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 NBG4104 to its factory default settings. If you
backed up an earlier configuration file, you would not have to totally re-configure the NBG4104.
You could simply restore your last configuration.
1.5 LEDs
Figure 1 Front Panel
The following table describes the LEDs and the WPS button.
Table 1 Front panel LEDs and WPS button
LED COLOR STATUS DESCRIPTION
Power Green On The NBG4104 is receiving power and functioning properly.
Blinking The NBG4104 is booting up.
Off The NBG4104 is not receiving power.
WPS Green On The WPS status is configured.
Blinking The NBG4104 is negotiating a WPS connection with a wireless
client.
Off The WPS function is disabled on the NBG4104.
WAN Green On The NBG4104’s WAN connection is ready.
Blinking The NBG4104 is sending/receiving data through the WAN with a
Off The WAN connection is not ready, or has failed.
WLAN Green On The NBG4104 is ready, but is not sending/receiving data
Blinking The NBG4104 is sending/receiving data through the wireless
Off The wireless LAN is not ready or has failed.
10/100Mbps transmission rate.
through the wireless LAN.
LAN.
18
NBG4104 User’s Guide
Table 1 Front panel LEDs and WPS button (continued)
LED COLOR STATUS DESCRIPTION
LAN 1-4 Green On The NBG4104’s LAN connection is ready.
Blinking The NBG4104 is sending/receiving data through the LAN with a
10/100Mbps transmission rate.
Off The LAN connection is not ready, or has failed.
Chapter 1 Introduction
NBG4104 User’s Guide
19
2.1 Overview
Your NBG4104 supports WiFi Protected Setup (WPS), which is an easy way to set up a secure
wireless network. WPS is an industry standard specification, defined by the WiFi Alliance.
WPS allows you to quickly set up a wireless network with strong security, without having to
configure security settings manually. Each WPS connection works between two devices. Both
devices must support WPS (check each device’s documentation to make sure).
Depending on the devices you have, you can either press a button (on the device itself, or in its
configuration utility) or enter a PIN (a unique Personal Identification Number that allows one device
to authenticate the other) in each of the two devices. When WPS is activated on a device, it has two
minutes to find another device that also has WPS activated. Then, the two devices connect and set
up a secure network by themselves.
CHAPTER 2
The WPS Button
For more information on using WPS, see Section 8.2 on page 45.
NBG4104 User’s Guide 20
3.1 Overview
This chapter describes how to access the NBG4104 Web Configurator and provides an overview of
its screens.
The Web Configurator is an HTML-based management interface that allows easy setup and
management of the NBG4104 via Internet browser. Use Internet Explorer 6.0 and later versions,
Mozilla Firefox 3 and later versions, or Safari 2.0 and later versions. The recommended screen
resolution is 1024 by 768 pixels.
In order to use the Web Configurator you need to allow:
• Web browser pop-up windows from your device. Web pop-up blocking is enabled by default in
Windows XP SP (Service Pack) 2.
• JavaScript (enabled by default).
• Java permissions (enabled by default).
CHAPTER 3
Introducing the Web Configurator
Refer to the Troubleshooting chapter (Chapter 24 on page 151) to see how to make sure these
functions are allowed in Internet Explorer.
3.2 Accessing the Web Configurator
1 Make sure your NBG4104 hardware is properly connected and prepare your computer or computer
network to connect to the NBG4104 (refer to the Quick Start Guide).
2 Launch your web browser.
3 Type "http://192.168.1.1" as the website address.
Your computer must be in the same subnet in order to access this website address.
NBG4104 User’s Guide 21
Chapter 3 Introducing the Web Configurator
3.2.1 Login Screen
The Web Configurator initially displays the following login screen.
Figure 2 Login screen
The following table describes the labels in this screen.
Table 2 Login screen
LABEL DESCRIPTION
User Name Type “admin” (default) as the user name.
Password Type “1234” (default) as the password.
Login Click Login to enter the NBG4104’s web configurator.
3.2.2 Password Screen
You should see a screen asking you to change your password (highly recommended) as shown
next.
Figure 3 Change Password Screen
22
NBG4104 User’s Guide
The following table describes the labels in this screen.
Table 3 Change Password Screen
LABEL DESCRIPTION
New Password Type a new password.
Retype to Confirm Retype the password for confirmation.
Apply Click Apply to save your changes back to the NBG4104.
Ignore Click Ignore if you do not want to change the password this time.
Note: The management session automatically times out when the time period set in the
Administrator Inactivity Timer field expires (default five minutes; go to Chapter
23 on page 143 to change this). Simply log back into the NBG4104 if this happens.
3.3 Resetting the NBG4104
If you forget your password or IP address, or you cannot access the Web Configurator, you will need
to use the RESET button at the back of the NBG4104 to reload the factory-default configuration
file. This means that you will lose all configurations that you had previously saved, the password
will be reset to “1234” and the IP address will be reset to “192.168.1.1”.
Chapter 3 Introducing the Web Configurator
3.3.1 How to Use the RESET Button
1 Make sure the power LED is on.
2 Press the RESET button for longer than 1 second to restart/reboot the NBG4104.
3 Press the RESET button for longer than 5 seconds to set the NBG4104 back to its factory-default
configurations.
NBG4104 User’s Guide
23
Chapter 3 Introducing the Web Configurator
24
NBG4104 User’s Guide
4.1 Overview
This chapter discusses read-only information related to the device state of the NBG4104.
To access the Monitor screens, click . Click open all to show the complete menu.
CHAPTER 4
Monitor
You can also click the links in the Summary table of the Status screen to view the bandwidth
consumed, packets sent/received as well as the status of clients connected to the NBG4104.
4.2 What You Can Do
•Use the Log screen to see the logs for the activity on the NBG4104 (Section 4.3 on page 25).
•Use the DHCP Table screen to view information related to your DHCP status (Section 4.4 on
page 26).
•use the Statistics screen to view port statistics and the "system up time" (Section 4.5 on page
28).
•Use the WLAN Station Status screen to view the wireless stations that are currently associated
to the NBG4104 (Section 4.6 on page 28).
4.3 The Log Screen
The Web Configurator allows you to look at all of the NBG4104’s logs in one location.
NBG4104 User’s Guide 25
Chapter 4 Monitor
4.3.1 View Log
Click Monitor > Log to open the View Log screen. You can see the logged messages for the
NBG4104. The log wraps around and deletes the old entries after it fills. Click Clear Logs to delete
all the logs. Click Refresh to renew the log screen.
Figure 4 View Log
4.3.2 Log Settings
Click Monitor > Log to open the Log Settings screen. You can configure syslog settings.
Figure 5 Log Settings
The following table describes the labels in this screen.
Table 4 Monitor > Log > Log Settings
LABEL DESCRIPTION
Active Select this to enable syslog logging.
Syslog Server IP
Address
Apply Click Apply to save your changes back to the NBG4104.
Reset Click Reset to begin configuring this screen afresh.
Enter the server name or IP address of the syslog server that logs the selected
categories of logs.
4.4 DHCP Table
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to
obtain TCP/IP configuration at start-up from a server. You can configure the NBG4104’s LAN as a
DHCP server or disable it. When configured as a server, the NBG4104 provides the TCP/IP
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configuration for the clients. If DHCP service is disabled, you must have another DHCP server on
that network, or else the computer must be manually configured.
Click the DHCP Table (Details...) hyperlink in the Status screen or Monitor > DHCP Table.
Read-only information here relates to your DHCP status. The DHCP table shows current DHCP client
information (including Host Name, IP Address, and Mac Address) of all network clients using
the NBG4104’s DHCP server.
Figure 6 Summary: DHCP Table
The following table describes the labels in this screen.
Table 5 Summary: DHCP Table
LABEL DESCRIPTION
# This is the index number of the host computer.
IP Address This field displays the IP address relative to the # field listed above.
Host Name This field displays the computer host name.
MAC Address This field shows the MAC address of the computer with the name in the Host Name
field.
Every Ethernet device has a unique MAC (Media Access Control) address which uniquely
identifies a device. The MAC address is assigned at the factory and consists of six pairs
of hexadecimal characters, for example, 00:A0:C5:00:00:02.
Refresh Click Refresh to renew the screen.
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4.5 Packet Statistics
Click the Packet Statistics (Details...) hyperlink in the Status screen or Monitor > Statistics.
Read-only information here includes port statistics and the "system up time". The Poll Interval(s)
field is configurable and is used for refreshing the screen.
Figure 7 Summary: Packet Statistics
The following table describes the labels in this screen.
Table 6 Summary: Packet Statistics
LABEL DESCRIPTION
Port This is the NBG4104’s port type.
TxPkts This is the number of transmitted packets on this port.
RxPkts This is the number of received packets on this port.
TxBytes This displays the transmission speed in bytes per second on this port.
RxBytes This displays the reception speed in bytes per second on this port.
Up Time This is the total time the NBG4104 has been for each session.
System Up Time This is the total time the NBG4104 has been on.
Poll Interval(s) Enter the time interval in seconds for refreshing statistics in this field.
Set Interval Click this button to apply the new poll interval you entered in the Poll Interval(s)
Stop Click Stop to stop refreshing statistics.
Refresh Click Refresh to renew the screen.
field.
4.6 WLAN Station Status
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Click the WLAN Station Status (Details...) hyperlink in the Status screen or Monitor > WLAN
Station Status. View the wireless stations that are currently associated to the NBG4104 in the
Association List. Association means that a wireless client (for example, your network or computer
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with a wireless network card) has connected successfully to the AP (or wireless router) using the
same SSID, channel and security settings.
Figure 8 Summary: Wireless Association List
The following table describes the labels in this screen.
Table 7 Summary: Wireless Association List
LABEL DESCRIPTION
# This is the index number of an associated wireless station.
MAC Address This field displays the MAC address of an associated wireless station.
Association Time This field displays the time a wireless station first associated with the NBG4104’s WLAN
network.
Refresh Click Refresh to reload the list.
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