NETGEAR CG2003D Bedienungsanleitung

350 East Plumeria Drive

San Jose, CA 95134

USA

January 2011

202-10773-01

v1.0

Wireless Cable Modem

Gateway CG2003D

User Manual

Wireless Cable Modem Gateway CG2003D User Manual

No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated

into any language in any form or by any means without the written permission of NETGEAR, Inc.

Technical Support

Thank you for choosing NETGEAR. To register your product, get the latest product updates, or get support online,

visit us at http://support.netgear.com.

Phone (US & Canada only): 1-888-NETGEAR

Phone (Other Countries): See Support information card.

Trademarks

NETGEAR, the NETGEAR logo, ReadyNAS, ProSafe, Smart Wizard, Auto Uplink, X-RAID2, and NeoTV are

trademarks or registered trademarks of NETGEAR, Inc. Microsoft, Windows, Windows NT, and Vista are

registered trademarks of Microsoft Corporation. Other brand and product names are registered trademarks or

trademarks of their respective holders.

Statement of Conditions

To improve internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes

to the products described in this document without notice. NETGEAR does not assume any liability that may occur

due to the use, or application of, the product(s) or circuit layout(s) described herein.

Contents |3

Contents

Chapter 1 Connecting the Gateway to the Internet

Unpack your Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Gateway Stand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Label. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

What You Need Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Cabling the Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Basic Cable Network Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Chapter 2 Wireless Settings

Wireless Adapter Compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Security Basics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Disable SSID Broadcast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Restrict Access by MAC Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Wireless Security Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Add Clients (Computers or Devices) to Your Network . . . . . . . . . . . . . . . .13

Manual Method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Wi-Fi Protected Setup (WPS) Method . . . . . . . . . . . . . . . . . . . . . . . . . .13

Wireless Settings Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Consider Every Device on Your Network . . . . . . . . . . . . . . . . . . . . . . . .15

View or Change Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Set up Access Control by MAC Address . . . . . . . . . . . . . . . . . . . . . . . .16

Change the WPA Security Option and Pre-Shared Key. . . . . . . . . . . . .18

Set WEP Encryption and Passphrase . . . . . . . . . . . . . . . . . . . . . . . . . .19

Wireless Guest Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Wireless Guest Network Screen Fields . . . . . . . . . . . . . . . . . . . . . . . . .21

Set up Wi-Fi Multimedia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Chapter 3 Content Filtering and Firewall Rules

Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Block HTTP Traffic by Keywords or Domains . . . . . . . . . . . . . . . . . . . . . .25

Block Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Port Forwarding and Port Blocking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Set Up Port Blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Set Up Port Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Set up Port Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4|Contents

Wireless Cable Modem Gateway CG2003D User Manual

Chapter 4 Managing Your Network

Gateway Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Connection Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Change Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Reset to Factory Default Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Back Up and Restore Your Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Run the Diagnostic Ping Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Chapter 5 Advanced Settings

Dynamic DNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Set Up a DMZ Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

LAN IP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Reserve an IP Address for DHCP Use. . . . . . . . . . . . . . . . . . . . . . . . . .43

Set up Remote Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Remote Management After a Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

URL to Connect to The Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Universal Plug and Play (UPnP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Chapter 6 Troubleshooting

Using LEDs to Troubleshoot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Cannot Log in to the Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Troubleshooting the Internet Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Troubleshooting a TCP/IP Network Using a Ping Utility. . . . . . . . . . . . . . . 49

Test the LAN Path to Your Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Test the Path from Your PC to a Remote Device. . . . . . . . . . . . . . . . . .50

Appendix A Technical Specifications and Factory Default Settings

Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Factory Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Appendix B Related Documents

Appendix C Notification of Compliance

Index

Chapter 1. Connecting the Gateway to the Internet |5

1. Connecting the Gateway to the Internet

This chapter describes how to set up the Wireless Cable Modem Gateway on your Local Area

Network (LAN), connect to the Internet, and perform basic configuration.

Unpack your Gateway

The product package should contain the following items:

• Wireless Cable Modem Gateway CG2003D

• AC power adapter

• Category 5 (CAT5) Ethernet cable

• Stand

If any parts are incorrect, missing, or damaged, contact your NETGEAR dealer. Keep the

carton and original packing materials, in case you need to return the product for repair.

Gateway Stand

You can place the gateway vertically or horizontally.

To place the gateway vertically, attach the stand to

the bottom of the gateway, and place it on a flat

surface, as shown.

Figure 1. Vertical position with stand

6|Chapter 1. Connecting the Gateway to the Internet

Wireless Cable Modem Gateway CG2003D User Manual

Front Panel

The front panel of the Wireless Cable Modem Gateway contains status LEDs.

WPS

button

Figure 2. Front view

You can use the LEDs to verify connections.The following table lists and describes each LED

on the front panel of the gateway.

Table 1. LED Descriptions

LED Description

Power • On: Power is supplied to the gateway, and the gateway has completed its initialization.

• Off:Power is not supplied to the gateway.

Downstream

Link

• On: The gateway completed its downstream scan.

• Blink: The gateway has just powered up or it is performing a downstream scan.

• Off:The gateway’s self-test and initialization is complete but it has not completed the

downstream scan.

Upstream

Link

• On: The gateway has completed its upstream ranging operation.

• Blink: The gateway has just powered up or it is getting upstream configuration information.

• Off:The gateway’s self-test and initialization is complete but it has not completed the

upstream scan.

Cable Link • On (green): Configuration by your cable service provider is complete.

• Blink: Both downstream and upstream links are established, but the configuration is not done.

• Off: Configuration of the cable interface is in progress. The downstream and upstream links

have not been established yet.

LAN

(local area

network)

• On (green): The port has detected link with a 100 Mbps device.

• Blink (green): Data is being transmitted or received at 100 Mbps.

• On (yellow):The Local port has detected link with a 10 Mbps device.

• Blink (yellow): Data is being transmitted or received at 10 Mbps.

• Off:No link is detected on this port.

Wireless • On: The wireless access point is operating normally.

• Blink: Data is being transmitted or received on the wireless interface.

• Blink in a fast pattern: The gateway attempts to establish a connection to a wireless client

through Wi-Fi Protected Setup (WPS).

• Off: The wireless access point is disabled.

Chapter 1. Connecting the Gateway to the Internet |7

Wireless Cable Modem Gateway CG2003D User Manual

Rear Panel

The rear panel of the gateway contains the connections identified below:

AC power adapter

4 Ethernet LAN ports

coaxial cable

input

Figure 3. Rear view

Label

The label on the bottom of the gateway shows the gateway’s factory reset button, its default

wireless settings, MAC address, and serial number.

Reset to Factory Defaults button Serial number

MAC address

Default wireless settings

Figure 4. Label on gateway bottom

What You Need Before You Begin

• A computer with an Ethernet port to connect to the gateway while you set it up. The

computer has to be set up to use DHCP. For help with DHCP configuration, see the link to

the online document ITCP/IP Networking Basics in Appendix B.

• Active Data Over Cable Internet service provided by cable modem account.

• The Internet Service Provider (ISP) configuration information for your cable modem

account.

8|Chapter 1. Connecting the Gateway to the Internet

Wireless Cable Modem Gateway CG2003D User Manual

Cabling the Gateway

1. Using the coaxial cable provided by your cable company, connect the gateway cable

port (A) to your cable line splitter or outlet.

Figure 5. Gateway coaxial cable connection

2. Use the Ethernet cable that shipped with your gateway to connect a LAN port (B) to the

Ethernet adapter in your computer.

Figure 6. Gateway Ethernet cable connection

3. Connect the power adapter to the gateway, and plug it into an outlet.

4. Wait about 30 seconds for the lights to stop blinking, and then verify the following:

The power LED is lit.

The cable link LED is solid green, indicating a link has been established to the

cable network.

Chapter 1. Connecting the Gateway to the Internet |9

Wireless Cable Modem Gateway CG2003D User Manual

You can log in to the gateway to view or change its settings. You can use an Ethernet cable to

connect the computer to the gateway, or you can connect wirelessly.

1. Using the computer that you first used to access your cable modem Internet service,

type http://192.168.0.1 in the address field of your Internet browser. A login window

opens.

2. Log in to the gateway.

There are two methods to log in:

• For superuser access, enter MSO for the user name and changeme for the

password. Both are case-sensitive.

• To access the gateway features except for content filtering, enter admin for the

user name and password for the password, both in lower case letters.

When you connect to the gateway, the Gateway Status screen displays.

For more information about this screen, see Gateway Status on page 33.

10 |Chapter 1. Connecting the Gateway to the Internet

Wireless Cable Modem Gateway CG2003D User Manual

If you do not see the login prompt:

1. Check the LEDs on the gateway front panel to make sure that the gateway is plugged

into an electrical outlet, its power is on, and the Ethernet cable between your computer

and the gateway is connected to a LAN port.

2. If you connected the Ethernet cable and quickly launched your browser and typed in the

router URL, your computer might need a minute or two to recognize the LAN connection.

Relaunch your browser and try again.

3. If you are having trouble accessing the gateway wirelessly, NETGEAR recommends that

during setup you use an Ethernet cable to connect your computer so that you can log in to

the gateway.

Note: If you cannot connect to the gateway, check the Internet Protocol

(TCP/IP) properties in the Network Connections section of your PC

Control Panel. They should be set to obtain both IP and DNS server

addresses automatically. See your computer documentation or

follow the links in Related Documents on page 146 for assistance.

Basic Cable Network Settings

To configure the cable network settings, in the main menu, under Setup, select Basic

Settings. The Basic Settings screen displays.

The default setting is for DHCP. Click Apply to save your settings. After you connect to the

Internet, the network configuration settings on this screen match the cable network settings.

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