NETGEAR CG814WG V3 User Manual
Wireless Cable Modem
Gateway CG814WG v3
Reference Manual
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
202-10297-01
June 2007
© 2007 by NETGEAR, Inc. All rights reserved.
Trademarks
NETGEAR is a trademark of NETGEAR, Inc. Microsoft, Windows, and Windows NT are registered trademarks of
Microsoft Corporation. Other brand and product names are registered trademarks or trademarks of their respective
holders.
Statement of Conditions
In the interest of improving 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.
FCC Warning Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Any changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.
Prohibition of Co-location
This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter.
Safety Information
To maintain compliance with FCC’s RF exposure guidelines, this equipment should be installed and operated with
minimum distance of 20 cm between the radiator and your body. Use the supplied antenna.
Declaration of Conformity for R&TTE directive 1999/5/EC
Essential requirements – Article 3. Protection requirements for health and safety – Article 3.1a. Testing for electric
safety according to EN 60950-1 has been conducted. These are considered relevant and sufficient. Protection
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requirements for electromagnetic compatibility – Artic le 3.1b. Te sting for electromagnetic compatibility according to
EN 301 489-1 and EN 301 489-17 has been conducted. These are considered relevant and sufficient. Effective use of the
radio spectrum – Article 3.2. Testing for radio test suites according to EN 300 328- 2 has been conducted. These are
considered relevant and sufficient.
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das CG814WG v3 Wireless Cable Modem Gateway gemäß der im BMPT-AmtsblVfg 243/
1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger Geräte (z.B.
Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der
Betriebsanleitung.
Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt
gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.
Certificate of the Manufacturer/Importer
It is hereby certified that the CG814WG v3 Wireless Cable Modem Gateway has been suppressed in accordance with the
conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example,
test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please refer to the
notes in the operating instructions.
Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market
and has been granted the right to test the series for compliance with the regulations.
Technical Support
Thank you for choosing Netgear product(s). Please register online and take advantage of the technical support resources
such as Netgear online knowledge base. Technical support is available 24 hours a day, seven days a week; please call
your Cable Internet Service Provider.
Product and Publication Details
Model Number: CG814WG v3
Publication Date: June 2007
Product Family: Product Family
Product Name: CG814WG v3 Wireless Cable Modem Gateway
Home or Business Product: Home
Language: English
Publication Part Number: 202-10297-01
v1.0, June 2007
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Contents
About This Manual
Conventions, Formats and Scope .....................................................................................1
How to Use This Manual ...................................................................................................2
How to Print this Manual ....................................................................................................2
Chapter 1
Connecting the Gateway to the Internet
Package Contents ..........................................................................................................1-1
Front Panel ...............................................................................................................1-1
Rear Panel ...............................................................................................................1-3
What You Need Before You Begin ..................................................................................1-3
Hardware Requirements ..........................................................................................1-3
LAN Configuration Requirements ............................................................................1-4
Internet Configuration Requirements ....................................................................... 1-4
Connecting the CG814WG v3 Gateway .........................................................................1-4
Installation .......................................... ...................................................................... 1-4
Chapter 2
Wireless Configuration
Wireless Placement and Range Guidelines ...................................................................2-2
SSID and Wireless Security Settings Form ....................................................................2-3
Viewing or Changing Wireless Settings ..........................................................................2-4
Turning on Access Control to Restrict Access by MAC Address ....................................2-6
How to Configure WEP (Wired Equivalent Privacy) .......................................................2-8
How to Configure WPA .................................................................................................2-10
Chapter 3
Content Filtering and Firewall Rules
Content Filtering .............................................................................................................3-1
Logs .........................................................................................................................3-2
Blocking Keywords, Sites, and Services ......... ... .... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ... ..3-2
Blocking Keywords and Domains .............................................................................3-3
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Services ...................................................................................................................3-4
Firewall Rules .................................................................................................................3-5
Port Forwarding ...................................... ... ... ... ... .... ... ... ... .... .....................................3-6
Port Blocking ......... ... .... ... ... ... ....................................... ... .... ... ... ... .... ... ... ..................3-7
Chapter 4
Managing Your Network
Maintenance ................................................................................................................... 4-1
Gateway Status ........................................................................................................4-2
Signal Status ............................................................................................................4-3
Set Password ...........................................................................................................4-4
Backup Settings ................................. .... ... ... ... ... .... .......................................... ........4-5
Event Log .................................................................................................................4-6
Advanced Settings ..........................................................................................................4-7
WAN Setup .. ... ... ... ... .... ... ....................................... ... ... ... .... ... ... ... .... ........................4-7
Dynamic DNS ...........................................................................................................4-8
LAN IP Settings ........................................................................................................4-9
Diagnostics ................................... ... ... .... .......................................... ......................4-10
Remote Management Access ................................................................................4-11
UPnP ..................................... ................................. ................................ ................ 4-12
Chapter 5
Troubleshooting
Basic Functions ..............................................................................................................5-1
Using LEDs to Troubleshoot .................................. ... ... ... .... ... ... ... .... ... ... ... ...............5-2
Connecting to the Gateway’s Main Menu .......................................................................5-2
Troubleshooting the ISP Connection ..............................................................................5-3
Troubleshooting a TCP/IP Network Using a Ping Utility .................................................5-4
Testing the LAN Path to Your Gateway ....................................................................5-4
Testing the Path from Your PC to a Remote Device ................................................5-5
Appendix A
Technical Specifications and Factory Default Settings
Technical Specifications ................................................................................................. A-1
Factory Default Settings ................................................................................................ A-2
Appendix B
Related Documents
ii Contents
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About This Manual
The NETGEAR® CG814WG v3 Wireless Cable Modem Gateway Reference Manual describes
how to install, configure and troubleshoot the CG814WG v3 Wireless Cable Modem Gateway.
The information in this manual is intended for readers with intermediate computer and Internet
skills.
Conventions, Formats and Scope
The conventions, formats, and scope of this manual are described in the following paragraphs:
• Typographical Conventions. This manual uses the following typographical conventions:
Italics Emphasis, books, CDs, URL names
Bold User input
Fixed Screen text, file and server names, extensions, commands, IP addresses
• Formats. This manual uses the following formats to highlight special messages:
Note: This format is used to highlight information of importance or special interest.
Tip: This format is used to highlight a procedure that will save time or resources.
Warning: Ignoring this type of note may result in a malfunction or damage to the
equipment.
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Wireless Cable Modem Gateway CG814WG v3 Reference Manual
• Scope. This manual is written for the CG814WG v3 Gateway according to these
specifications:
Product Version CG814WG v3 Wireless Cable Modem Gateway
Manual Publication Date June 2007
For more information about network, Internet, firewall, and VPN technologies, see the links to the
NETGEAR website in Appendix B, “Related Documents”.
Note: Product updates are available on the NETGEAR, Inc. website at
http://kbserver.netgear.com.
How to Use This Manual
The HTML version of this manual includes the following:
• Buttons, and , for browsing forwards or backwards through the manual one page
at a time
• A button that displays the table of contents and an button. Double-click on a
link in the table of contents or index to navigate directly to where the topic is described in the
manual.
• A button to access the full NETGEAR, Inc. online knowledge base for the product
model.
• Links to PDF versions of the full manual and individual chapters.
How to Print this Manual
To print this manual you can choose one of the following several options, according to your needs.
• Printing a Page in the HTML View.
Each page in the HTML version of the manual is dedicated to a major topic. Use the Print
button on the browser toolbar to print the page contents.
• Printing a Chapter.
Use the PDF of This Chapter link at the top left of any page.
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Wireless Cable Modem Gateway CG814WG v3 Reference Manual
– Click the PDF of This Chapter link at the top left of any page in the chapter you want to
print. The PDF version of the chapter you were viewing opens in a browser window.
– Your computer must have the free Adobe Acrobat reader installed in order to view and
print PDF files. The Acrobat reader is available on the Adobe website at
http://www.adobe.com.
– Click the print icon in the upper left of the window.
Tip: If your printer supports printing two pages on a single sheet of paper, you can
save paper and printer ink by selecting this feature.
• Printing the Full Manual.
Use the Complete PDF Manua l link at the top left of any page.
– Click the Complete PDF Manual link at the top left of any page in the manual. The PDF
version of the complete manual opens in a browser window.
– Click the print icon in the upper left of the window.
Tip: If your printer supports printing two pages on a single sheet of paper, you can
save paper and printer ink by selecting this feature.
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vi About This Manual
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Chapter 1
Connecting the Gateway to the Internet
This chapter describes how to set up the CG814WG v3 Gateway on your Local Area Network
(LAN), connect to the Internet, and perform basic configuration.
Package Contents
The product package should contain the following items:
• CG814WG v3 Wireless Cable Modem Gateway
•AC power adapter
• Category 5 (CAT5) Ethernet cable
• USB cable
If any of the parts are incorrect, missing, or damaged, contact your NETGEAR dealer. Keep the
carton, including the original packing materials, in case you need to return the product for repair.
Front Panel
The front panel of the CG814WG v3 contains status LEDs.
Figure 1-1
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Wireless Cable Modem Gateway CG814WG v3 Reference Manual
You can use the LEDs to verify connections. Table 1-1 lists and describes each LED on the front
panel of the CG814WG v3 Gateway.
Table 1-1. LED Descriptions
LED Description
Power • On: Power is supplied to the gateway.
• Off: Power is not supplied to the gateway.
Cable Link • On (green): Configuration of the cable interface by your cable service provider
is complete.
• Off: Configuration of the cable interface is still in progress.
Upstream
Traffic
Downstream
Traffic
Wireless • On: The wireless Access Point is operating normally.
LAN
(Local Area
Network)
• Blink: Data is being transmitted to the cable interface.
• Off: The cable interface is idle.
• Blink: Data is being received from the cable interface.
• Off: The cable interface is idle.
Blink: Data is being transmitted or received on the wireless interface.
• 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.
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Rear Panel
The rear panel of the CG814WG v3 contains the connections identified below:
wireless antenna
reset button
AC power adapter input
Figure 1-2
USB port
coaxial cable to your cable service provider
4 Ethernet LAN ports
What You Need Before You Begin
You need these three things before you can connect your gateway to the Internet:
• A computer properly connected to the gateway as explained below.
• Active Data Over Cable Internet service provided by cable modem account.
• The Internet Service Provider (ISP) configuration information for your cable modem account.
Hardware Requirements
The CG814WG v3 Gateway connects to your LAN using either its twisted-pair Ethernet, USB or
802.11b or 802.11g wireless port.
To use the CG814WG v3 Gateway on your network, each computer must have either an installed
Ethernet Network Interface Card (NIC), USB Host port or 802.11b or 802.11g wireless adapter. If
the computer will connect to your network at 100 Mbps, you must use a Category 5 (CAT5) cable
such as the one provided with your gateway.
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LAN Configuration Requirements
For the initial connection to the Internet and configuration of your gateway, connect a computer to
the gateway which is set to automatically get its TCP/IP configuration from the gateway via
DHCP.
Note: For help with DHCP configuration, see the link to the online document “Internet
Networking and TCP/IP Addressing” in Appendix B.
Internet Configuration Requirements
Depending on how your ISP set up your Internet account, you will need one or more of these
configuration settings to connect your gateway to the Internet:
• Host and Domain Names
• ISP Domain Name Server (DNS) Addresses
• Fixed or Static IP Address
Connecting the CG814WG v3 Gateway
Note: Install and set up the CG814WG v3 Gateway using an Ethernet or USB
connection to your computer first. Then configure the wireless settings. See
Chapter 2, “Wireless Configuration” for instructions for wireless settings.
Installation
Follow these steps to install your gateway:
1. Connect the gateway.
a. Turn off your computer.
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b. Using the coaxial cable provided by your cable company, connect the CG814WG v3 cable
port (A) to your cable line splitter or outlet.
A
Figure 1-3
c. Connect the gateway to your computer with either an Ethernet or USB cable.
Note: The USB connection option is only available for Windows PCs. Also,
Windows 95 does not support USB without special operating system
upgrades and patches.
For an Ethernet connection, use the Ethernet cable that shipped with your gateway to
connect a LAN port (B) to the Ethernet adapter in your computer.
B
Figure 1-4
Connecting the Gateway to the Internet 1-5
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Note: The CG814WG v3 Gateway uses Auto UplinkTM technology. Each local
Ethernet port senses whether the cable plugged into the port is attached to
a PC, or is attached to a switch or hub, which requires an uplink
connection. The port configures itself to accommodate either type of
cable. This eliminates the need for crossover cables.
For a USB connection, connect the USB cable to the USB port on your modem and to a
USB port on your computer.
d. Connect the power adapter to the CG814WG v3, and plug it into an outlet.
e. Turn on your computer . If software usually logs you in t o your Internet connection, do not
run that software or cancel it if it starts automatically.
f. Wait about 30 seconds for the lights to stop blinking, and then verify the following:
The power light is lit after turning on the gateway.
The cable link light is solid green, indicating a link has been established to the cable
network.
The LAN lights are lit for any connected computers.
2. For an Ethernet connection, go to Step 3. For a USB connection, install the USB driver.
a. For a USB connection you must install the USB driver. Insert the NETGEAR CD that
came with your gateway into the CD drive of your computer.
The Found New Hardware Wizard detects the gateway and prompts for the driver.
Figure 1-5
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b. Browse to the Resource CD and install the USB driver by clicking through the Windows
wizard prompts.
3. Log in to the Gateway
Note: To connect to the gateway, your computer must be configured to obtain an IP
address automatically via DHCP. For instructions on how to do this, see the
link to “Preparing a Computer for Network Access” in Appendix B.
a. Using the computer that you first used to access your cable modem Internet service,
connect to the gateway by typing http://192.168.0.1 in the address field of your Internet
browser. A login window opens.
Figure 1-6
Note: For security reasons, the gateway has two sets of user names and passwords:
one for a parent and one for children. Only the p arent’s login can be used to set
up Parental Control and MAC Filtering. The child’s login can configure all
other features of the gateway.
b. Log in to the gateway.
• To log in as the parent, enter superuser for the user name and password for the
password, both in lower case letters.
• To log in as the child, enter admin for the user name and password for the password,
both in lower case letters.
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Note: If you cannot connect to the gateway, see “Basic Functions” in Chapter 5.
When you connect to the gateway the Gateway status screen opens.
Figure 1-7
4. Enter your Network Configuration.
• WAN IP Address: The IP Address that you would for your gateway in dotted decimal
notation.
• WAN Subnet Mask: The network number portion of an IP address. Unless you are
implementing subnetting, use 255.255.0.0 as the subnet mask.
• WAN Default Gateway: This is the ISP’s router to which your gateway will connect.
• WAN Primary and Secondary DNS: A DNS server is a host on the Internet that
translates Internet names (such as www.netgear.com) to numeric IP addresses. Typically
your ISP transfers the IP address of one or two DNS servers to your gateway during login.
If the ISP does not transfer an address, you must obtain it from the ISP and enter it
manually here. If you enter an address here, you should reboot your PCs after configuring
the gateway.
5. Click Apply to save your settings.
For more information about the Gateway Status screen see“Gateway Status” in Chapter 4.
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Chapter 2
Wireless Configuration
This chapter describes how to configure the wireless features of your CG814WG v3 Gateway. In
planning your wireless network, you should consider the level of security required. You should
also select the physical placement of your firewall in order to maximize the network speed.
Note: If you are configuring the gateway from a wireless PC and you change the
gateway’s SSID, channel, or wireless security settings, you will lose your wireless
connection when you click Apply. You must then change the wireless settings of
your PC to match the gateway’s new settings.
Set up wireless features for the gateway in this order:
1. Install the gateway as described in Chapter 1, “Connecting the Gateway to the Internet”. The
gateway should be working on your LAN before you set up the wireless features.
2. Plan the location for the gateway based on considerations in “Wireless Placement and Range
Guidelines” on page 2-2.
3. Use the form in section “SSID and Wireless Security Settings Form” on page 2-3 to keep track
of your settings.
4. Enter the wireless settings, and verify wireless connectivity as described in “Viewing or
Changing Wireless Settings” on page 2-4 .
5. Set up wireless security as described in “Turning on Access Control to Restrict Access by
MAC Address” on page 2-6, , or “How to Configure WPA” on page 2-10.
For more information about wireless technology, see the link to “Wireless Communications” in
Appendix B.
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Wireless Placement and Range Guidelines
The range of your wireless connection can vary significantly based on the physical placement of
the gateway. The latency, data throughput performance, and notebook power consumption of
wireless adapters also vary depending on your configuration choices.
For best results, place your gateway:
• Near the center of the area in which your PCs will operate.
• In an elevated location such as a high shelf where the wirelessly connected PCs have line-ofsight access (even if through walls).
• Away from sources of interference, such as PCs, microwave ovens, and 2.4 GHz cordless
phones.
• Away from large metal surfaces.
• Put the antenna in a vertical position to provide the best side-to-side coverage. Put the antenna
in a horizontal position to provide the best up-and-down coverage.
• If using multiple access points, it is better if adjacent access points use different radio
frequency channels to reduce interference. The recommended channel spacing between
adjacent access points is 5 channels (for example, use channels 1 and 6, or 6 and 11).
The time it takes to establish a wireless connection can vary depending on both your security
settings and placement. WEP connections can take slightly longer to establish. Also, WEP
encryption can consume more battery power on a notebook computer.
2-2 Wireless Configuration
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