NETGEAR DGND3300-100NAS A

Appendix A. Troubleshooting | 137

A

A. Troubleshooting

Diagnosing and solving problems

This appendix provides information about troubleshooting your N300 Wireless Dual Band

ADSL2+ Modem Router DGND3300v2. After each problem description, instructions are

provided to help you diagnose and solve the problem. As a first step, review the Quick Tips.

Tip: NETGEAR provides helpful articles, documentation, and the latest

firmware updates at http://www.netgear.com/support.

This chapter includes the following sections:

• Quick Tips on page 137

• Troubleshooting with the LEDs on page 138

• Cannot Access the N300 Wireless Modem Router Menu on page 140

• Cannot Access the Internet on page 141

• Troubleshooting a Network Using the Ping Utility on page 142

• Problems with Date and Time on page 144

• Wireless Connectivity on page 145

• Viewing Available Networks on page 145

Quick Tips

This section describes tips for troubleshooting some common problems.

Recommendation Instructions

You can turn off the dome lights for the N300

wireless modem router. Tap the dome to turn off the lights. These lights identify the

activity of the eight internal antennas, flashing to show which

combination of antennas is receiving the strongest signals.

Be sure to restart your network in this

sequence.

1. Unplug the N300 wireless modem router.

1. Turn off the computers.

2. Plug in the N300 wireless modem router. Wait 1 minute.

3. Turn on the computers.

Contents

Main Page Table of Contents Chapter 1 Router Internet Setup Chapter 2 Wireless Settings Chapter 3 Security Settings Chapter 4 Network Maintenance Chapter 5 USB Storage Chapter 6 Virtual Private Networking Chapter 7 Advanced Settings (Part 1) Chapter 8 Advanced Settings (Part 2) Appendix A Troubleshooting Page Connecting to the network Using the Setup Manual Logging In to Your N300 Wireless Modem Router Using the Setup Wizard Viewing or Manually Configuring Your ISP Settings Page 12 | Chapter 1. Router Internet Setup N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual ISP does not require login ISP does require login Figure 6. Chapter 1. Router Internet Setup | 13 N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Configuring ADSL Settings Protecting your network Planning Your Wireless Network Wireless Placement and Range Guidelines Wireless Security Options Manually Configuring Your Wireless Settings Chapter 2. Wireless Settings | 19 N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Figure 9. The settings for this screen are explained in the following table. Configuring WEP Wireless Security Page Configuring WPA, WPA2, or Mixed WPA2 + WPA Wireless Security Page Using Push 'N' Connect (WPS) to Configure Your Wireless Network Using a WPS Button to Add a WPS Client Using PIN Entry to Add a WPS Client Page Configuring Advanced WPS Settings Connecting Additional Wireless Client Devices after WPS Setup Adding More WPS Clients Adding Both WPS and Non-WPS Clients Restricting Access to Your N300 Wireless Modem Router Wireless Guest Networks Page Live Parental Controls Web-Based Interface Total Home Protection Page Keeping unwanted content out of your network Protecting Access to Your N300 Wireless Modem Router Changing the Built-In Password Restricting Access by MAC Address Page Blocking Access to Internet Sites Firewall Rules Page 40 | Chapter 3. Security Settings N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Figure 21. Port Forwarding Adding a Pre-set Port Forwarding Rule Adding a Custom Port Forwarding Rule Port Triggering Blocking Access to Internet Services Scheduling Blocking Viewing Logs of Web Access or Attempted Web Access Configuring Email Alert and Web Access Log Notifications Page Setting the Time Administering your network Upgrading the Firmware Manually Check for Firmware Upgrades Viewing N300 Wireless Modem Router Status Information Page 54 | Chapter 4. Network Maintenance N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Connection Status Statistics Viewing a List of Attached Devices Managing the Configuration File Backing Up and Restoring the Configuration Erasing the Configuration Running Diagnostic Utilities and Rebooting the Router Enabling Remote Management Access Page Traffic Meter Page Page Network storage for sharing files and backing up data USB Drive Requirements File Sharing Scenarios Sharing Photos with Friends and Family Storing Files in a Central Location for Printing Sharing Large Files with Colleagues USB Storage Basic Settings Editing a Network Folder Configuring USB Storage Advanced Settings 70 | Chapter 5. USB Storage N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Figure 46. Creating a Network Folder Media Server Settings Unmounting a USB Drive Specifying Approved USB Devices Connecting to the USB Drive from a Remote Computer Locating the Internet Port IP Address Accessing the Routers USB Drive Remotely Using FTP Connecting to the USB Drive with Microsoft Network Settings Enabling File and Printer Sharing Configuring Windows 98SE and Windows ME Page Setting up secure encrypted communications Overview of VPN Configuration Client-to-Gateway VPN Tunnels Gateway-to-Gateway VPN Tunnels Planning a VPN VPN Tunnel Configuration Setting Up a Client-to-Gateway VPN Configuration Step 1: Configure the Client-to-Gateway VPN Tunnel Page Page Step 2: Configure the NETGEAR ProSafe VPN Client Page Page Page Page Page Page Setting Up a Gateway-to-Gateway VPN Configuration Page Page Page VPN Tunnel Control Activating a VPN Tunnel Using the VPN Status Screen to Activate a VPN Tunnel Activating the VPN Tunnel by Pinging the Remote Endpoint Start Using a VPN Tunnel to Activate It Verifying the Status of a VPN Tunnel Deactivating a VPN Tunnel Page Deleting a VPN Tunnel Setting Up VPN Tunnels in Special Circumstances Using Auto Policy to Configure VPN Tunnels Configuring VPN Network Connection Parameters Page The DGND3300v2 VPN tunnel network connection fields are defined in the following table. Table 5. VPN - Auto Policy Screen Settings Page Table 5. VPN - Auto Policy Screen Settings (Continued) Example of Using Auto Policy Figure 54. The following settings are assumed for this example: Table 6. Gateway-to-Gateway VPN Tunnel Configuration Worksheet Page Page Using Manual Policy to Configure VPN Tunnels The following table explains the fields in the VPN - Manual Policy screen. Table 7. VPN Manual Policy Fields and Settings Fields and Settings Description Table 7. VPN Manual Policy Fields and Settings (Continued) Configuring for unique situations Using the LAN Setup Options Page 114 | Chapter 7. Advanced Settings (Part 1) N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Using the N300 Wireless Modem Router as a DHCP Server Address Reservation Using a Dynamic DNS Service Configuring the WAN Setup Options 118 | Chapter 7. Advanced Settings (Part 1) N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Figure 57. The WAN Setup fields are described in the following table: Setting Up a Default DMZ Server Setting Up Quality of Service (QoS) Configuring QoS for Internet Access QoS for Applications and Online Gaming Page QoS for a Router LAN Port QoS for a MAC Address Editing or Deleting an Existing QoS Policy Configuring Static Routes Page Wireless Repeating (Also Called WDS) Wireless Repeating Function Setting Up the Base Station Setting Up a Repeater Unit Page Fine-tuning your network Common Connection Types Assessing Your Speed Requirements Optimizing Your Network Bandwidth Optimizing Wireless Performance Changing the MTU Size Universal Plug and Play Page A Diagnosing and solving problems Quick Tips Troubleshooting with the LEDs Appendix A. Troubleshooting | 139 N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual If any of the conditions in step 2 on page 138 does not occur, see the following table. Cannot Access the N300 Wireless Modem Router Menu Cannot Access the Internet Checking the Configuration Checking the WAN IP Address Troubleshooting a Network Using the Ping Utility Testing the LAN Path to Your Router Testing the Path from Your Computer to a Remote Device Problems with Date and Time Wireless Connectivity Viewing Available Networks Page B Specifications Restoring the Factory Configuration Settings Using the Restore Factory Settings Button 148 | Appendix B. Default Configuration and Technical Specifications N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Appendix B. Default Configuration and Technical Specifications | 149 N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual 150 | Appendix B. Default Configuration and Technical Specifications N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Technical Specifications C Case study on how to set up a VPN Configuration Profile Step-by-Step Configuration N300 Wireless Modem Router with FQDN to Gateway B Configuration Profile Using a Fully Qualified Domain Name (FQDN) Step-by-Step Configuration Page Configuration Summary (Telecommuter Example) Setting Up Client-to-Gateway VPN (Telecommuter Example) Step 1: Configure Gateway A (VPN Router at Main Office) Step 2: Configure Gateway B (VPN Router at Regional Office) Page Page Page Page Page Monitoring the VPN Tunnel (Telecommuter Example) Viewing the VPN Routers VPN Status and Log Information D D. Notification of Compliance NETGEAR Wireless Routers, Gateways, APs Regulatory Compliance Information FCC Requirements for Operation in the United States FCC Information to User FCC Guidelines for Human Exposure Canadian Department of Communications Radio Interference Regulations Interference Reduction Table EDOC in Languages of the European Community Europe EU Declaration of Conformity 170 | Appendix D. Notification of Compliance N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual Page E Index Numerics A B C E F G H I M N O P Q S T U V W