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Chapter 24 Troubleshooting
NBG-417N User’s Guide
198
Contents
Main
NBG-417N
Wireless N-lite Home Router
Page
About This User's Guide
Intended Audience
Tips for Reading Users Guides On-Screen
Related Documentation
Documentation Feedback
Need More Help?
Customer Support
Document Conventions
Warnings and Notes
Warnings tell you about things that could harm you or your device.
Syntax Conventions
Page
Safety Warnings
Safety Warnings
Contents Overview
Page
Table of Contents
Page
Page
Page
Part IV: Management ........................................................................... 143
Part V: Maintenance and Troubleshooting........................................ 169
Part VI: Appendices and Index ........................................................... 203
Page
PART I
Page
CHAPTER 1
Getting to Know Your NBG-417N
Figure 1 NBG-417N Network
1.1 Overview
1.2 Applications
1.3 Ways to Manage the NBG-417N
1.4 Good Habits for Managing the NBG-417N
Figure 2 Front Panel
1.5 LEDs
Chapter 1 Getting to Know Your NBG-417N
Table 1 Front Panel LEDs and WPS Button
LED COLOR STATUS DESCRIPTION
Page
CHAPTER 2
The WPS Button
2.1 Overview
Page
CHAPTER 3
Introducing the Web Configurator
3.1 Overview
3.2 Accessing the Web Configurator
Page
Figure 4 Selecting the setup mode
3.3 Resetting the NBG-417N
3.3.1 Procedure to Use the Reset Button
3.4 Navigating the Web Configurator
3.5 Status Screen (Router Mode)
Figure 5 Status Screen (Router Mode)
Table 2 Status Screen Icon Key
Chapter 3 Introducing the Web Configurator
NBG-417N Users Guide 31
Table 3 Web Configurator Status Screen (Router Mode)
3.5.1 Navigation Panel
Table 3 Web Configurator Status Screen (Router Mode) (continued)
Chapter 3 Introducing the Web Configurator
LINK TAB FUNCTION
NBG-417N Users Guide 33
3.5.2 Summary: DHCP Table
Figure 6 Summary: DHCP Table
3.5.3 Summary: Packet Statistics
Figure 7 Summary: Packet Statistics
Table 5 Summary: DHCP Table
3.5.4 Summary: WLAN Station Status
Figure 8 Summary: Wireless Association List
Table 6 Summary: Packet Statistics
Table 7 Summary: Wireless Association List
Page
CHAPTER 4
Connection Wizard
Figure 9 Select Wizard or Advanced Mode
4.1 Wizard Setup
Figure 10 Select a Language
4.2 Connection Wizard: STEP 1: System Information
4.2.1 System Name
4.2.2 Domain Name
Figure 12 Wizard Step 1: System Information
Table 8 Wizard Step 1: System Information
Chapter 4 Connection Wizard
4.3 Connection Wizard: STEP 2: Wireless LAN
Set up your wireless LAN using the following screen.
Figure 13 Wizard Step 2: Wireless LAN
Table 9 Wizard Step 2: Wireless LAN
4.3.1 Extend (WPA-PSK or WPA2-PSK) Security
4.4 Connection Wizard: STEP 3: Internet Configuration
Figure 15 Wizard Step 3: ISP Parameters.
4.4.1 Ethernet Connection
Figure 16 Wizard Step 3: Ethernet Connection
4.4.2 PPPoE Connection
Table 11 Wizard Step 3: ISP Parameters
Figure 17 Wizard Step 3: PPPoE Connection
Table 12 Wizard Step 3: PPPoE Connection
4.4.3 PPTP Connection
Table 13 Wizard Step 3: PPTP Connection
Chapter 4 Connection Wizard
NBG-417N Users Guide 47
4.4.4 Your IP Address
The following table describes the labels in this screen
Figure 19 Wizard Step 3: Your IP Address
Table 13 Wizard Step 3: PPTP Connection
Table 14 Wizard Step 3: Your IP Address
4.4.5 WAN IP Address Assignment
4.4.6 IP Address and Subnet Mask
Table 15 Private IP Address Ranges
4.4.7 DNS Server Address Assignment
4.4.8 WAN IP and DNS Server Address Assignment
Figure 20 Wizard Step 3: WAN IP and DNS Server Addresses
Table 16 Wizard Step 3: WAN IP and DNS Server Addresses
4.4.9 WAN MAC Address
Figure 21 Wizard Step 3: WAN MAC Address
Table 17 Example of Network Properties for LAN Servers with Fixed IP Addresses
Table 18 Wizard Step 3: WAN MAC Address
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CHAPTER 5
AP Mode
5.1 Overview
5.2 Setting your NBG-417N to AP Mode
5.3 Status Screen (AP Mode)
Chapter 5 AP Mode
NBG-417N Users Guide 55
The following table describes the labels shown in the Status screen.
Table 19 Status Screen (AP Mode)
5.3.1 Navigation Panel
Figure 26 Menu: AP Mode
Table 19 Status Screen (AP Mode) (continued)
Table 20 Menu: AP Mode
Chapter 5 AP Mode
5.4 Configuring Your Settings
Use this section to configure your NBG-417N settings while in AP Mode.
Table 20 Menu: AP Mode
LINK TAB FUNCTION
5.4.1 LAN Settings
Table 21 Network > LAN > IP
5.4.2 WLAN and Maintenance Settings
5.5 Logging in to the Web Configurator in AP Mode
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CHAPTER 6
Tutorials
6.1 Overview
6.2 How to Connect to the Internet from an AP
Figure 28 Wireless AP Connection to the Internet
6.2.1.1 Push Button Configuration (PBC)
Figure 29 Example WPS Process: PBC Method
6.2.1.2 PIN Configuration
Wireless Client NBG-417N
Figure 30 Example WPS Process: PIN Method
6.2.2 Enable and Configure Wireless Security without WPS on your NBG-417N
Figure 31 Tutorial: Network > Wireless LAN > General
Figure 32 Tutorial: Status Screen
6.2.2.1 Configure Your Notebook
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Figure 36 Link Status
6.3 Bandwidth Management for your Network
6.3.1 Configuring Bandwidth Management by Application
Page
6.3.3 Configuring Bandwidth Allocation by IP or IP Range
Figure 39 Tutorial: Bandwidth Allocation Example
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PART II
Page
CHAPTER 7
Wireless LAN
7.1 Overview
Figure 41 Example of a Wireless Network
7.2 What You Can Do
7.3 What You Should Know
7.3.1 Wireless Security Overview
7.3.1.1 SSID
7.3.1.2 MAC Address Filter
7.3.1.3 User Authentication
7.3.1.4 Encryption
7.3.1.5 WPS
7.4 General Wireless LAN Screen
The following table describes the general wireless LAN labels in this screen.
See the rest of this chapter for information on the other labels in this screen.
7.4.1 No Security
Table 24 Network > Wireless LAN > General
7.4.2 WEP Encryption
Figure 44 Network > Wireless LAN > General: Static WEP
Table 26 Network > Wireless LAN > General: Static WEP
7.4.3 WPA-PSK/WPA2-PSK
Figure 45 Network > Wireless LAN > General: WPA-PSK/WPA2-PSK
Table 26 Network > Wireless LAN > General: Static WEP
7.5 MAC Filter
Table 27 Network > Wireless LAN > General: WPA-PSK/WPA2-PSK
Figure 46 Network > Wireless LAN > MAC Filter
Table 28 Network > Wireless LAN > MAC Filter
7.6 Wireless LAN Advanced Screen
Figure 47 Network > Wireless LAN > Advanced
The following table describes the labels in this screen.
Table 29 Network > Wireless LAN > Advanced
Chapter 7 Wireless LAN
7.7 Quality of Service (QoS) Screen
Table 29 Network > Wireless LAN > Advanced
Figure 48 Network > Wireless LAN > QoS
Table 30 Network > Wireless LAN > QoS
7.7.1 Application Priority Configuration
Figure 49 Network > Wireless LAN > QoS: Application Priority Configuration
Table 30 Network > Wireless LAN > QoS (continued)
Table 31 Network > Wireless LAN > QoS: Application Priority Configuration
Table 31 Network > Wireless LAN > QoS: Application Priority Configuration
7.8 WPS Screen
Figure 50 Network > Wireless LAN > WPS
Table 32 Network > Wireless LAN > WPS
7.9 WPS Station Screen
7.10 Scheduling Screen
Figure 52 Network > Wireless LAN > Scheduling
Table 34 Network > Wireless LAN > Scheduling
Note: Entering the same begin time and end time will mean the whole day.
7.11 WDS Screen
Figure 53 Network > Wireless LAN > WDS
Table 35 Network > Wireless LAN > WDS
7.11.1 Security Mode: Static WEP
Table 36 Network > Wireless LAN > WDS (Static WEP)
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CHAPTER 8
WAN
8.1 Overview
Figure 56 LAN and WAN
8.2 What You Can Do
8.3 What You Need To Know
8.3.1 Configuring Your Internet Connection
Encapsulation Method
WAN IP Address
DNS Server Address Assignment
8.3.2 Multicast
Figure 57 Multicast Example
8.3.3 NetBIOS over TCP/IP
8.3.4 Auto-Bridge
Figure 58 Autobridging Example
8.4 Internet Connection
8.4.1 Ethernet Encapsulation
Figure 59 Network > WAN > Internet Connection: Ethernet Encapsulation
Table 38 Network > WAN > Internet Connection: Ethernet Encapsulation
8.4.2 PPPoE Encapsulation
Table 38 Network > WAN > Internet Connection: Ethernet Encapsulation
Figure 60 Network > WAN > Internet Connection: PPPoE Encapsulation
Table 39 Network > WAN > Internet Connection: PPPoE Encapsulation
8.4.3 PPTP Encapsulation
Table 39 Network > WAN > Internet Connection: PPPoE Encapsulation
Figure 61 Network > WAN > Internet Connection: PPTP Encapsulation
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8.5 Advanced WAN Screen
Note: The three categories shown in this screen are independent of each other.
Figure 62 Network > WAN > Advanced
Table 41 Network > WAN > Advanced
CHAPTER 9
LAN
9.1 Overview
Figure 63 LAN Setup
9.2 What You Can Do
9.3 What You Need To Know
Figure 64 LAN and WAN IP Addresses
9.3.1 IP Pool Setup
9.3.2 LAN TCP/IP
9.4 LAN IP Screen
Figure 65 Network > LAN > IP
Table 42 Network > LAN > IP
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CHAPTER 10
DHCP Server
10.1 Overview
10.2 What You Can Do
10.3 What You Need To Know
10.4 General Screen
Figure 66 Network > DHCP Server > General
10.5 Advanced Screen
Table 43 Network > DHCP Server > General
Figure 67 Network > DHCP Server > Advanced
Table 44 Network > DHCP Server > Advanced
10.6 Client List Screen
Table 44 Network > DHCP Server > Advanced
Figure 68 Network > DHCP Server > Client List
Table 45 Network > DHCP Server > Client List
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CHAPTER 11
Network Address Translation (NAT)
11.1 Overview
Figure 69 NAT Example
11.2 What You Can Do
11.3 General NAT Screen
Figure 70 Network > NAT > General
Table 46 Network > NAT > General
11.4 NAT Application Screen
Figure 71 Network > NAT > Application
Table 47 Network > NAT > Application
Chapter 11 Network Address Translation (NAT)
NBG-417N Users Guide 125
Table 47 Network > NAT > Application (continued)
11.5 NAT Advanced Screen
11.5.1 Trigger Port Forwarding Example
Figure 73 Trigger Port Forwarding Process: Example
Table 48 Network > NAT > Advanced
11.5.2 Two Points To Remember About Trigger Ports
CHAPTER 12
Dynamic DNS
12.1 Overview
12.2 What You Can Do
12.3 What You Need To Know
12.4 Dynamic DNS Screen
Figure 74 Network > Dynamic DNS
Table 49 Network > Dynamic DNS
Chapter 12 Dynamic DNS
NBG-417N Users Guide 131
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CHAPTER 13
Firewall
Figure 75 Default Firewall Action
13.1 Overview
13.2 What You Can Do
13.3 What You Need To Know
13.3.1 About the NBG-417N Firewall
13.4 General Firewall Screen
Figure 76 Security > Firewall > General
13.5 Services Screen
Table 50 Security > Firewall > General
Chapter 13 Firewall
Figure 77 Security > Firewall > Services
Table 51 Security > Firewall > Services
CHAPTER 14
Content Filtering
14.1 Overview
14.2 What You Can Do
14.3 What You Need To Know
14.4 Filter Screen
Figure 78 Security > Content Filter > Filter
14.5 Technical Reference
14.5.1 Customizing Keyword Blocking URL Checking
Domain Name or IP Address URL Checking
Table 52 Security > Content Filter > Filter
Full Path URL Checking
File Name URL Checking
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CHAPTER 15
Static Route
15.1 Overview
Figure 79 Example of Static Routing Topology
15.2 What You Can Do
15.3 IP Static Route Screen
Figure 80 Management > Static Route > IP Static Route
Table 53 Management > Static Route > IP Static Route
Chapter 15 Static Route
NBG-417N Users Guide 147
15.3.1 Static Route Setup Screen
Figure 81 Management > Static Route > IP Static Route: Static Route Setup
Table 54 Management > Static Route > IP Static Route: Static Route Setup
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CHAPTER 16
Bandwidth Management
16.1 Overview
16.2 What You Can Do
16.3 What You Need To Know
16.4 General Configuration
Figure 83 Management > Bandwidth MGMT > General
Note: You cannot apply both bandwidth management types at the same time.
16.5 Advanced Configuration
Table 55 Management > Bandwidth MGMT > General
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Chapter 16 Bandwidth Management
NBG-417N Users Guide 153
Table 56 Management > Bandwidth MGMT > Advanced (continued)
16.5.1 Priority Levels
16.5.2 User Defined Service Rule Configuration
Figure 85 Management > Bandwidth MGMT > Advanced: Allocation Setup
Table 57 Management > Bandwidth MGMT > Advanced: Allocation Setup
Chapter 16 Bandwidth Management
16.5.3 Predefined Bandwidth Management Services
Table 58 Media Bandwidth Management Setup: Services
SERVICE DESCRIPTION
16.5.4 Services and Port Numbers
Table 58 Media Bandwidth Management Setup: Services (continued)
CHAPTER 17
Remote Management
17.1 Overview
17.2 What You Can Do
17.3 What You Need To Know
Page
17.4 WWW Screen
Figure 86 Management > Remote MGMT > WWW
Table 59
Note: This only applies on WAN IP.
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CHAPTER 18
Universal Plug-and-Play (UPnP)
18.1 Overview
18.2 What You Can Do
18.3 What You Need to Know
18.4 UPnP Screen
Figure 87 Management > UPnP > General
18.5 Technical Reference
18.5.1 Using UPnP in Windows XP Example
18.5.1.1 Auto-discover Your UPnP-enabled Network Device
Table 60 Management > UPnP > General
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PART V
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CHAPTER 19
System
Table 61 Maintenance > System > General
19.4 Time Setting Screen
Figure 98 Maintenance > System > Time Setting
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CHAPTER 20
Logs
20.1 Overview
20.2 What You Can Do
20.3 What You Need to Know
20.4 View Log Screen
Figure 99 Maintenance > Logs > View Log
Table 63 Maintenance > Logs > View Log
CHAPTER 21
Tools
21.1 Overview
21.2 What You Can Do
21.3 Firmware Upload Screen
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Page
21.4 Configuration Screen
Figure 104 Maintenance > Tools > Configuration
21.4.1 Backup Configuration
21.4.2 Restore Configuration
Note: Do not turn off the NBG-417N while configuration file upload is in progress
Figure 105 Configuration Restore Successful
Figure 106 Temporarily Disconnected
Table 65 Maintenance Restore Configuration
21.5 Restart Screen
CHAPTER 22
Sys OP Mode
AP
22.4 General Screen
Figure 113 Maintenance > Sys Op Mode > General: AP
Table 66 Maintenance > Sys OP Mode > General
Note: If you select the incorrect System Operation Mode you cannot connect to the Internet.
Page
CHAPTER 23
Language
Figure 114 Language
23.1 Language Screen
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CHAPTER 24
Troubleshooting
24.1 Power, Hardware Connections, and LEDs
The NBG-417N does not turn on. None of the LEDs turn on.
One of the LEDs does not behave as expected.
24.2 NBG-417N Access and Login
I dont know the IP address of my NBG-417N.
I forgot the password.
I cannot see or access the Login screen in the Web Configurator.
I can see the Login screen, but I cannot log in to the NBG-417N.
24.3 Internet Access
I cannot access the Internet.
The Internet connection is slow or intermittent.
24.4 Resetting the NBG-417N to Its Factory Defaults
You will lose all of your changes when you push the RESET button.
24.5 Wireless Router/AP Troubleshooting
I cannot access the NBG-417N or ping any computer from the WLAN (wireless AP or router).
I set up URL keyword blocking, but I can still access a website that should be blocked.
I can access the Internet, but I cannot open my network folders.
I can access the Web Configurator after I switched to AP mode.
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NBG-417N Users Guide 199
CHAPTER 25
Product Specifications
The following tables summarize the NBG-417Ns hardware and firmware features.
Table 67 Hardware Features
Chapter 25 Product Specifications
Table 68 Firmware Features
FEATURE DESCRIPTION
Note: Only upload firmware for your specific model!
Chapter 25 Product Specifications
NBG-417N Users Guide 201
Table 68 Firmware Features
FEATURE DESCRIPTION
Page
PART VI
Page
APPENDIX A
IP Addresses and Subnetting
Introduction to IP Addresses
Structure
Figure 115 Network Number and Host ID
Subnet Masks
Table 69 Subnet Mask - Identifying Network Number
Network Size
Table 70 Subnet Masks
Table 69 Subnet Mask - Identifying Network Number
Notation
Table 71 Maximum Host Numbers
Table 72 Alternative Subnet Mask Notation
Subnetting
Figure 116 Subnetting Example: Before Subnetting
Figure 117 Subnetting Example: After Subnetting
Example: Four Subnets
Table 73 Subnet 1
Table 74 Subnet 2
Table 75 Subnet 3
Table 76 Subnet 4
Example: Eight Subnets
Subnet Planning
Table 76 Subnet 4 (continued)
Table 77 Eight Subnets
Table 78 24-bit Network Number Subnet Planning
Configuring IP Addresses
Table 79 16-bit Network Number Subnet Planning
Private IP Addresses
APPENDIX B
Pop-up Windows, JavaScripts and Java Permissions
Internet Explorer Pop-up Blockers
Disable pop-up Blockers
Figure 119 Internet Options: Privacy
Enable pop-up Blockers with Exceptions
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Figure 122 Internet Options: Security
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APPENDIX C
Setting up Your Computers IP Address
Windows 95/98/Me
Figure 126 WIndows 95/98/Me: Network: Configuration
Installing Components
Configuring
Figure 127 Windows 95/98/Me: TCP/IP Properties: IP Address
Figure 128 Windows 95/98/Me: TCP/IP Properties: DNS Configuration
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Figure 132 Windows XP: Local Area Connection Properties
Figure 133 Windows XP: Internet Protocol (TCP/IP) Properties
Figure 134 Windows XP: Advanced TCP/IP Properties
Figure 135 Windows XP: Internet Protocol (TCP/IP) Properties
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Figure 137 Macintosh OS 8/9: TCP/IP
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Linux
Note: Make sure you are logged in as the root administrator.
Figure 140 Red Hat 9.0: KDE: Network Configuration: Devices
Using the K Desktop Environment (KDE)
Page
Figure 143 Red Hat 9.0: KDE: Network Configuration: Activate
Using Configuration Files
Figure 144 Red Hat 9.0: Dynamic IP Address Setting in ifconfig-eth0
Figure 145 Red Hat 9.0: Static IP Address Setting in ifconfig-eth0
Figure 146 Red Hat 9.0: DNS Settings in resolv.conf
Figure 147 Red Hat 9.0: Restart Ethernet Card
25.0.1 Verifying Settings
Figure 148 Red Hat 9.0: Checking TCP/IP Properties
APPENDIX D
Wireless LANs
Wireless LAN Topologies
Ad-hoc Wireless LAN Configuration
Figure 149 Peer-to-Peer Communication in an Ad-hoc Network
ESS
Figure 151 Infrastructure WLAN
Channel
RTS/CTS
Figure 152 RTS/CTS
Fragmentation Threshold
Preamble Type
Note: The AP and the wireless stations MUST use the same preamble mode in order to communicate.
IEEE 802.11g Wireless LAN
IEEE 802.1x
RADIUS
Table 80 IEEE 802.11g
Types of RADIUS Messages
Types of Authentication
EAP-MD5 (Message-Digest Algorithm 5)
EAP-TLS (Transport Layer Security)
EAP-TTLS (Tunneled Transport Layer Service)
PEAP (Protected EAP)
LEAP
Dynamic WEP Key Exchange
WPA(2)
Encryption
Table 81 Comparison of EAP Authentication Types
User Authentication
25.0.2 WPA(2)-PSK Application Example
Figure 153 WPA(2)-PSK Authentication
25.0.3 WPA(2) with RADIUS Application Example
Security Parameters Summary
Table 82 Wireless Security Relational Matrix
APPENDIX E
Services
Table 83 Examples of Services
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APPENDIX F
Legal Information
Copyright
Disclaimer
Certifications
FCC Radiation Exposure Statement
Industry Canada Statement
IMPORTANT NOTE: IC Radiation Exposure Statement:
!
Notices
Viewing Certifications
ZyXEL Limited Warranty
Note
Registration
End-User License Agreement for "NBG-417N"
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Index
A
B
C
D
E
F
G
H
I
M
N
O
P
Q
S
T
U
V
W
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