Regulatory Compliance Information
This section includes user requirements for operating this product in accordance with National laws for usage of radio
spectrum and operation of radio devices. Failure of the end-user to comply with the applicable requirements may result
in unlawful operation and adverse action against the end-user by the applicable National regulatory authority.
This product's firmware limits operation to only the channels allowed in a particular Region or Country. Therefore, all
options described in this user's guide may not be available in your version of the product.
Europe – EU Declaration of Conformity
Marking by the above symbol indicates compliance with the Essential Requirements of the R&TTE Directive of the
European Union (1999/5/EC). This equipment meets the following conformance standards:
EN300 328, EN301 489-17, EN60950
Europe – Declaration of Conformity in Languages of the European Community
Cesky [Czech]
NETGEAR Inc. tímto prohlašuje, že tento Radiolan je ve shode se základními
požadavky a dalšími príslušnými ustanoveními smernice 1999/5/ES.
Dansk
Undertegnede NETGEAR Inc. erklærer herved, at følgende udstyr Radiolan overholder
[Danish]
de væsentlige krav og øvrige relevante krav i direktiv 1999/5/EF.
Deutsch
[German]
Hiermit erklärt NETGEAR Inc., dass sich das Gerät Radiolan in Übereinstimmung mit
den grundlegenden Anforderungen und den übrigen einschlägigen Bestimmungen der
Richtlinie 1999/5/EG befindet.
Eesti
Käesolevaga kinnitab NETGEAR Inc. seadme Radiolan vastavust direktiivi 1999/5/EÜ
[Estonian]
põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele.
English
Hereby, NETGEAR Inc., declares that this Radiolan is in compliance with the essential
requirements and other relevant provisions of Directive 1999/5/EC.
Español
[Spanish]
Por medio de la presente NETGEAR Inc. declara que el Radiolan cumple con los
requisitos esenciales y cualesquiera otras disposiciones aplicables o exigibles de la
Directiva 1999/5/CE.
Ελληνική
[Greek]
ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ NETGEAR Inc. ΔΗΛΩΝΕΙ ΟΤΙ Radiolan ΣΥΜΜΟΡΦΩΝΕΤΑΙ
ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ ΔΙΑΤΑΞΕΙΣ ΤΗΣ
ΟΔΗΓΙΑΣ 1999/5/ΕΚ.
Français
[French]
Par la présente NETGEAR Inc. déclare que l'appareil Radiolan est conforme aux
exigences essentielles et aux autres dispositions pertinentes de la directive 1999/5/CE.
Italiano [Italian] Con la presente NETGEAR Inc. dichiara che questo Radiolan è conforme ai requisiti
essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva 1999/5/CE.
Latviski
[Latvian]
Ar šo NETGEAR Inc. deklarē, ka Radiolan atbilst Direktīvas 1999/5/EK būtiskajām
prasībām un citiem ar to saistītajiem noteikumiem.
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Lietuvių
Šiuo NETGEAR Inc. deklaruoja, kad šis Radiolan atitinka esminius reikalavimus ir kitas
[Lithuanian]
1999/5/EB Direktyvos nuostatas.
Nederlands
[Dutch]
Hierbij verklaart NETGEAR Inc. dat het toestel Radiolan in overeenstemming is met de
essentiële eisen en de andere relevante bepalingen van richtlijn 1999/5/EG.
Malti [Maltese]
Hawnhekk, NETGEAR Inc., jiddikjara li dan Radiolan jikkonforma mal-htigijiet
essenzjali u ma provvedimenti ohrajn relevanti li hemm fid-Dirrettiva 1999/5/EC.
Magyar
Alulírott, NETGEAR Inc. nyilatkozom, hogy a Radiolan megfelel a vonatkozó alapvetõ
[Hungarian]
követelményeknek és az 1999/5/EC irányelv egyéb elõírásainak.
Polski [Polish]
Niniejszym NETGEAR Inc. oświadcza, że Radiolan jest zgodny z zasadniczymi
wymogami oraz pozostałymi stosownymi postanowieniami Dyrektywy 1999/5/EC.
Português
NETGEAR Inc. declara que este Radiolan está conforme com os requisitos essenciais
[Portuguese]
e outras disposições da Directiva 1999/5/CE.
Slovensko
[Slovenian]
NETGEAR Inc. izjavlja, da je ta Radiolan v skladu z bistvenimi zahtevami in ostalimi
relevantnimi določili direktive 1999/5/ES.
Slovensky
[Slovak]
NETGEAR Inc. týmto vyhlasuje, _e Radiolan spĺňa základné po_iadavky a všetky
príslušné ustanovenia Smernice 1999/5/ES.
Suomi
NETGEAR Inc. vakuuttaa täten että Radiolan tyyppinen laite on direktiivin 1999/5/EY
[Finnish]
oleellisten vaatimusten ja sitä koskevien direktiivin muiden ehtojen mukainen.
Svenska
[Swedish]
Härmed intygar NETGEAR Inc. att denna Radiolan står I överensstämmelse med de
väsentliga egenskapskrav och övriga relevanta bestämmelser som framgår av direktiv
1999/5/EG.
Íslenska
Hér með lýsir NETGEAR Inc. yfir því að Radiolan er í samræmi við grunnkröfur og aðrar
[Icelandic]
kröfur, sem gerðar eru í tilskipun 1999/5/EC.
Norsk
NETGEAR Inc. erklærer herved at utstyret Radiolan er i samsvar med de
[Norwegian]
grunnleggende krav og øvrige relevante krav i direktiv 1999/5/EF.
FCC Requirements for Operation in the United States
FCC Information to User
This product does not contain any user serviceable components and is to be used with approved antennas only. Any
product changes or modifications will invalidate all applicable regulatory certifications and approvals
FCC Guidelines for Human Exposure
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance of 20 cm between the radiator and your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
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FCC Declaration Of Conformity
We NETGEAR, Inc., 4500 Great America Parkway, Santa Clara, CA 95054, declare under our sole responsibility that
the model CGD24G Wireless Cable Modem Gateway complies with Part 15 of FCC Rules. Operation is subject to the
following two conditions:
•
•
This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.
FCC Radio Frequency Interference Warnings & Instructions
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 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 methods:
•
•
•
•
Reorient or relocate the receiving antenna
Increase the separation between the equipment and the receiver
Connect the equipment into an electrical outlet on a circuit different from that which the radio receiver is connected
Consult the dealer or an experienced radio/TV technician for help.
Modifications made to the product, unless expressly approved by NETGEAR, Inc., could void the user's right to operate
the equipment.
Canadian Department of Communications Radio Interference Regulations
This digital apparatus (CGD24G Wireless Cable Modem Gateway) does not exceed the Class B limits for radio-noise
emissions from digital apparatus as set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Canada ID: 4054A-WG111
Product and Publication Details
Model Number:
CGD24G
Publication Date:
Product Family:
May 2009
Gateway
Product Name:
CGD24G Wireless Cable Modem Gateway
Home or Business Product:
Language:
Business
English
Publication Part Number:
202-10389-02
Publication Version Number: 1.1
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Contents
Conventions, Formats and Scope .................................................................................... xi
How to Use This Manual ..................................................................................................xii
Chapter 1
Connecting the Gateway to the Internet
Package Contents ..........................................................................................................1-1
Router Rear Panel ...................................................................................................1-3
Hardware Requirements ..........................................................................................1-4
LAN Configuration Requirements ............................................................................1-4
Internet Configuration Requirements .......................................................................1-4
Connecting the CGD24G Gateway ................................................................................1-5
Installation ................................................................................................................1-5
Configuring the Basic Settings .......................................................................................1-9
Planning Your Wireless Network ....................................................................................2-1
Manually Configuring Your Wireless Settings and Security ............................................2-3
Configuring WEP (Wired Equivalent Privacy) Wireless Security .............................2-6
Using a WPS Button to Add a WPS Client .............................................................2-11
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Adding Just WPS Clients .......................................................................................2-14
Adding Both WPS and Non-WPS Clients ..............................................................2-14
Wireless Guest Networks .............................................................................................2-15
How to Configure Wireless Security for a Wireless Guest Network .......................2-17
Configuring Wi-Fi Multimedia .......................................................................................2-19
Configuring Logs ............................................................................................................3-1
Blocking Keywords, Sites, and Services ........................................................................3-2
Configuring Port Forwarding ....................................................................................3-6
Changing the Built-In Password .....................................................................................4-4
Configuring RIP ..............................................................................................................5-3
LAN IP Settings ............................................................................................................5-10
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Reserving an IP Address for DHCP Use ................................................................5-11
Reverting to Factory Default Setting ......................................................................5-13
Configuring Universal Plug and Play (UPnP) ...............................................................5-14
Basic Functions ..............................................................................................................5-1
Using LEDs to Troubleshoot ....................................................................................5-2
Testing the LAN Path to Your Gateway ....................................................................5-4
Testing the Path from Your PC to a Remote Device ................................................5-5
Technical Specifications ................................................................................................. A-1
Factory Default Settings ................................................................................................ A-2
Contents
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About This Manual
®
The NETGEAR Wireless Cable Modem Gateway CGD24G User Manual describes how to
install, configure and troubleshoot the CGD24G 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
Bold
Emphasis, books, CDs, file and server names, extensions
User input, IP addresses, GUI screen text
Command prompt, CLI text, code
URL links
Fixed
italic
•
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.
•
Scope. This manual is written for the CGD24G gateway according to these specifications:
Product Version
CGD24G Wireless Cable Modem Gateway
May 2009
Manual Publication Date
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For more information about network, Internet, firewall, and VPN technologies, see the links to the
Note: Product updates are available on the NETGEAR, Inc. website at
How to Use This Manual
The HTML version of this manual includes the following:
•
Buttons,
at a time
and
, for browsing forwards or backwards through the manual one page
•
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
model.
button to access the full NETGEAR, Inc. online knowledge base for the product
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 options, according to your needs.
•
Printing a page from HTML. Each page in the HTML version of the manual is dedicated to
a major topic. Select File > Print from the browser menu to print the page contents.
•
Printing from PDF. 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 Web site at
–
Printing a PDF chapter. Use the PDF of This Chapter link at the top left corner of any
page.
•
Click the PDF of This Chapter link at the top left corner of any page in the chapter
you want to print. The PDF version of the chapter you were viewing opens in a
browser window.
•
Click the print icon in the upper left of your browser window.
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–
–
Printing a PDF version of the complete manual. Use the Complete PDF Manual link
at the top left corner of any page.
•
Click the Complete PDF Manual link at the top left corner 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 corner of your browser 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 Manual 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.
Revision History
NETGEAR, Inc. is constantly searching for ways to improve its products and documentation. The
following table indicates any changes that might have been made since the CGD24G gateway was
introduced.
Version
Number
Part Number
Date
Description
202-10389-01
v1.0
June 2008
First publication.
About This Manual
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Version
Number
Part Number
Date
Description
202-10389-02
v1.0
November 2008
• Added information about grounding the
cable distribution system.
• Added information about attaching
brackets to the CGD24G gateway,
allowing it to be placed vertically.
• Made minor changes and corrections.
02-10389-02
v1.1
May 2009
• Added MSO login.
• Updated LED behavior and screen shots .
• Removed references to static IP and RIP
Setup features.
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Chapter 1
Connecting the Gateway to the Internet
This chapter describes how to set up the CGD24G 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:
•
•
•
•
•
CGD24G Wireless Cable Modem Gateway
AC power adapter
Category 5 (CAT5) Ethernet cable
USB cable
Two brackets
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.
You can place the CGD24G gateway vertically or horizontally. To place the gateway vertically,
attach the two brackets to the bottom of the gateway, and place it on a flat surface, as shown in the
following figure.
Figure 1-1
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Router Front Panel
The front panel of the CGD24G gateway contains status LEDs.
Figure 1-2
You can use the LEDs to verify connections.The following table lists and describes each LED on
the front panel of the CGD24G gateway.
Table 1-1. 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.
Cable Link
• On (green): Configuration of the cable interface by your cable service provider is
complete.
• Blink: Both downstream and upstream links are established, but before configuration of
cable interface is complete.
• Off: Configuration of the cable interface is still in progress. The downstream and upstream
links have not been established yet.
Upstream
Link
• On: The gateway has completed its upstream ranging operation.
• Blink: The gateway has just powered up or it is getting upstream parameters or
performing its upstream ranging operation.
• Off: The gateway’s self-test and initialization is complete but it has not completed the
downstream scan.
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Table 1-1. LED Descriptions (continued)
Downstream • On: The gateway has completed its downstream scan, and is performing upstream
Link
operations, is completing configuration of the cable interface, or is fully functional with its
cable interface.
• 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.
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.
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.
Router Rear Panel
The rear panel of the CGD24G gateway contains the connections identified below:
wireless antenna
USB port
reset button
coaxial cable to your cable service provider
4 Ethernet LAN ports
AC power adapter input
Figure 1-3
Connecting the Gateway to the Internet
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Router Side Panel
The side panel of the CGD24G gateway contains a WPS button. You can use the Wi-Fi Protected
Setup (WPS) feature with clients on the network that are Wi-Fi certified and WPA capable. See
Figure 1-4
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 CGD24G gateway connects to your LAN using either its twisted-pair Ethernet, USB, or
802.11b or 802.11g wireless port.
To use the CGD24G 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.
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.
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Connecting the Gateway
Note: First, install and set up the gateway using an Ethernet or USB connection to your
computer. Then configure the wireless settings. See Chapter 2, “Wireless
Configuration for instructions for wireless settings.
Follow these steps to install your gateway:
1. Connect the gateway.
a. Turn off your computer.
b. Using the coaxial cable provided by your cable company, connect the gateway cable port
(A) to your cable line splitter or outlet.
A
Figure 1-5
Warning: The cable distribution system must be grounded in accordance with
ANSI/NFPA 70 and the National Electrical Code (NEC), in particular
section 820.93, Grounding of the Outer Conductive Shield of a
Coaxial Cable.
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.
Connecting the Gateway to the Internet
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B
Figure 1-6
Note: The CGD24G 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 gateway and to a
USB port on your computer.
d. Connect the power adapter to the gateway, and plug it into an outlet.
e. Wait about 30 seconds for the lights to stop blinking, and then verify the following:
The power light is lit.
The cable link light is solid green, indicating a link has been established to the cable
network.
f. Turn on your computer. If software usually logs you in to your Internet connection, do not
run that software or cancel it if it starts automatically.
a. Insert the Resource 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.
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Figure 1-7
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
a. Using the computer that you first used to access your cable modem Internet service,
browser. A login window opens.
Figure 1-8
Connecting the Gateway to the Internet
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b. 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 in lower case letters.
•
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.
Figure 1-9
•
•
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Configuring the Basic Settings
To configure the cable network settings, in the main menu, under Setup, select Basic Settings. The
Basic Settings screen displays.
Figure 1-10
The default setting is for DHCP. Click Apply to save your settings. After you have connected to
the Internet, the network configuration settings on the Basic Settings screen match the cable
network settings.
Connecting the Gateway to the Internet
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Chapter 2
Wireless Configuration
For a wireless connection, the SSID, also called the wireless network name, and the wireless
security setting must be the same for the gateway and wireless computers or wireless adapters.
NETGEAR strongly recommends that you use wireless security. This chapter includes:
•
•
•
•
•
•
•
Planning Your Wireless Network
For compliance and compatibility between similar products in your area, the operating channel
and region must be set correctly.
To configure the wireless network, you can either specify the wireless settings, or you can use Wi-
Fi Protected Setup (WPS) to automatically set the SSID and implement WPA/WPA2 security.
•
To manually configure the wireless settings, you must know the following:
–
–
–
SSID. The default SSID for the gateway is Wireless.
The wireless mode (802.11g, or 802.11b) that each wireless adapter supports.
Wireless security option. To successfully implement wireless security, check each wireless
adapter to determine which wireless security option it supports.
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•
Push 'N' Connect (WPS) automatically implements wireless security on the gateway while, at
the same time, allowing you to automatically implement wireless security on any WPS-
enabled devices (such as wireless computers and wireless adapter cards). You activate WPS by
pressing a WPS button on the gateway, clicking an onscreen WPS button, or entering a PIN
number. This generates a new SSID and implements WPA/WPA2 security.
Note: NETGEAR’s Push 'N' Connect feature is based on the Wi-Fi Protected Setup
Fi-certified and WPS-capable products should be compatible with NETGEAR
products that implement Push 'N' Connect.
To set up your wireless network using the WPS feature:
–
Use the WPS button on the side of the gateway (there is also an onscreen WPS button), or
enter the PIN of the wireless device.
–
Make sure that all wireless computers and wireless adapters on the network are Wi-Fi
certified and WPA or WPA 2 capable, and that they support WPS configuration.
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 according to the following guidelines:
•
•
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-of-
sight 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.
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•
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.
Wireless Security Options
Indoors, computers can connect over 802.11g wireless networks at a maximum range of up to 300
feet. Such distances can allow for others outside your immediate area to access your network.
Unlike wired network data, your wireless data transmissions can extend beyond your walls and
can be received by anyone with a compatible adapter. For this reason, use the security features of
your wireless equipment. The CGD24G gateway provides highly effective security features which
are covered in detail in this chapter. Deploy the security features appropriate to your needs.
There are several ways you can enhance the security of your wireless network:
•
WEP. Wired Equivalent Privacy (WEP) data encryption provides data security. WEP Shared
Key authentication and WEP data encryption block all but the most determined eavesdropper.
This data encryption mode has been superseded by WPA-PSK and WPA2-PSK.
•
WPA-PSK (TKIP), WPA2-PSK (AES). Wi-Fi Protected Access (WPA) using a pre-shared
key to perform authentication and generate the initial data encryption keys. The very strong
authentication along with dynamic per frame re-keying of WPA makes it virtually impossible
to compromise.
•
Restrict access to your router.
For more information about wireless technology, see the link to the online document in “Wireless
Manually Configuring Your Wireless Settings and Security
You can view or manually configure the wireless settings for the gateway in the Wireless Settings
screen. If you want to make changes, make sure to note the current settings first.
Note: If you use a wireless computer to change the wireless network name (SSID) or
wireless security settings, you will be disconnected when you click Apply. To
avoid this problem, use a computer with a wired connection to access the gateway.
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To view or manually configure the wireless settings:
the unit is currently configured.
2. In the main menu, under Setup, select Wireless Settings. The Wireless Settings screen
displays.
Figure 2-1
3. If you make changes, you must click Apply for them to take effect.
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Table 2-1. Wireless Settings
Settings
Description
Wireless Network Name (SSID)
The SSID is also known as the wireless network name.
Enter a 32-character (maximum) name in this field. The
characters are case sensitive.
In a setting where there is more than one wireless
network, different wireless network names provide a
means for separating the traffic. Any device you want to
participate in a wireless network must use the SSID.
Channel
The wireless channel used by the gateway. The default is
channel 11.
You should not need to change the wireless channel
unless you experience interference (shown by lost
connections and/or slow data transfers). Should this
happen, you may need to experiment with different
channels to see which is the best.
Wireless Access
Point
Enable Wireless Access
Point
On by default, you can also turn off the wireless radio to
disable access through this device. This can be helpful
for configuration, network tuning, or troubleshooting
activities.
Allow Broadcast Name
(SSID)
On by default, the gateway broadcasts its SSID, allowing
wireless stations which have a “null” (blank) SSID to
adopt the correct SSID. The default SSID is NETGEAR.
If you disable broadcast of the SSID, only devices that
have the correct SSID can connect. This nullifies the
wireless network “discovery” feature of some products
such as Windows XP, but the data is still fully exposed to
a determined snoop using specialized test equipment
like wireless sniffers. For this reason NETGEAR
recommends that you also enable wireless security.
Wireless Card
Access List
Turn Access Control On
Access control is disabled by default so that any
computer that is configured with the correct SSID can
connect. For information about access control, see
Security Options
Disable
Wireless security is disabled by default. After the
gateway is connected to the Internet, NETGEAR strongly
recommends that you implement wireless security.
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Table 2-1. Wireless Settings (continued)
Settings
Description
Security Options
(continued)
• WEP (Wired Equivalent
Privacy) 64-bit encryption Wired Equivalent Privacy (WEP) data encryption
provides data security. WEP Shared Key authentication
WEP security uses encryption keys.
• WEP (Wired Equivalent
Privacy) 128-bit encryption determined eavesdropper.
You can select 64-bit or 128-bit encryption. See
and WEP data encryption will block all but the most
Wi-Fi Protected Access (WPA) data encryption provides
data security. The very strong authentication along with
dynamic per frame rekeying of WPA make it virtually
impossible to compromise. Because this is a new
standard, wireless device driver and software availability
may be limited.
WPA uses the TKIP encryption type and a
pre-shared key passphrase
• WPA
WPA-PSK uses the TKIP encryption type with
authentication from a RADIUS server.
WPA2 uses the AES encryption type and a
pre-shared key passphrase.
• WPA-PSK (Wi-Fi
Protected Access Pre-
Shared Key)
• WPA2
WPA2-PSK uses the AES encryption type with
authentication from a RADIUS server.
• WPA2-PSK (Wi-Fi
Protected Access 2 Pre-
Shared Key)
For more information about WPA, see “Configuring WPA
Configuring WEP (Wired Equivalent Privacy) Wireless Security
Note: If you use a wireless computer to configure wireless security settings, you will be
disconnected when you click Apply. Reconfigure your wireless computer to match
the new settings, or access the gateway from a wired computer to make further
changes.
To configure WEP data encryption:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
2. In the main menu, under Setup, select Wireless Settings.
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3. In the Wireless Settings screen, depending on the encryption strength that you want, select one
of these options:
•
•
WEP (Wired Equivalent Privacy) 64-bit encryption
WEP (Wired Equivalent Privacy) 128-bit encryption
Settings for WEP encryption are shown in the following figure (which is the bottom part of the
Wireless Settings screen).
Figure 2-2
4. Select the WEP security encryption from the Authentication drop-down list. Select Open
System or Shared Key or Shared Key. The default is Open System or Shared Key.
5. Enter the WEP encryption key information:
•
WEP PassPhrase: To use a passphrase to automatically generate the keys, enter a
passphrase and click Generate. Wireless stations must use the passphrase or keys to
access the gateway.
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•
Key 1 through Key 4: You can manually enter the four data encryption keys. These values
must be identical on all computers and access points in your network. For 64-bit WEP,
enter 10 hexadecimal digits (any combination of 0–9 or A–F). For 128-bit WEP, enter
26 hexadecimal digits.
•
Select which of the four keys will be the default. Data transmissions are always encrypted
using the default key. The other keys can only be used to decrypt received data. The four
entries are disabled if WPA-PSK or WPA authentication is selected.
6. Click Apply to save your settings.
Note: If you use a wireless computer to configure WEP settings, you will be
disconnected when you click Apply. Reconfigure your wireless adapter to match
the new settings or access the gateway from a wired computer to make any further
changes.
Configuring WPA or WPA2 Wireless Security
Note: Not all wireless adapters support WPA. Furthermore, client software is required on
the client. Windows XP and Windows 2000 with Service Pack 3 or above do
include the client software that supports WPA. The wireless adapter hardware and
driver must also support WPA. Consult the product documentation for your
wireless adapter and WPA client software for instructions on configuring WPA
settings.
To configure WPA in the gateway:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
2. In the main menu, under Setup, select Wireless Settings.
3. Select either one of the WPA settings:
•
•
•
WPA-PSK. This setting provides the TKIP encryption type and a pre-shared key
passphrase.
WPA. This setting provides the TKIP encryption type with authentication from a
RADIUS server.
WPA2-PSK. This setting provides the AES encryption type and a pre-shared key
passphrase.
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•
WPA2. This setting provides the AES encryption type with authentication from a
RADIUS server.
The content that you see in the Wireless Settings screen depends on the WPA setting that you
select. Figure 2-3 displays the WPA-PSK and WPA2_PSK settings. Figure 2-4 displays the
WPA and WPA2 settings..
Figure 2-3
Figure 2-4
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4. Depending on the WPA settings that you select, enter the required information:
•
For WPA-PSK or WPA2-PSK, enter the pre-shared key, which is a passphrase between
8 and 63 characters.
•
For WPA or WPA2, enter the settings for the RADIUS Server:
–
Primary Radius Server IP Address. The IP address of the RADIUS server. The
default is 0.0.0.0.
–
–
Radius Port. Port number of the RADIUS server. The default is 1812.
Shared Key. This is shared between the wireless access point and the RADIUS server
while authenticating the supplicant.
5. Click Apply to save your settings.
Using Push 'N' Connect (WPS) to Configure Your Wireless
Network and Security
If your wireless clients support Wi-Fi Protected Setup (WPS), you can use this feature to configure
the gateway’s SSID and security settings and, at the same time, connect the wireless client securely
and easily to the gateway. Look for the
symbol on your client device (computers that will
connect wirelessly to the gateway are clients). WPS uses the network name (SSID) that is
specified in the Wireless Settings screen and sets the wireless security settings to either WPA-PSK
or WPA2-PSK and then and broadcasts these settings to the wireless client.
Note: NETGEAR’s Push 'N' Connect feature based on the Wi-Fi Protected Setup
Fi-certified and WPS-capable products should be compatible with NETGEAR
products that implement Push 'N' Connect.
Some considerations regarding WPS are:
•
WPS supports only WPA-PSK and WPA2-PSK wireless security. WEP security is not
supported by WPS.
•
Before you can add a WPS client, the Security Option in the Wireless Settings screen must be
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A WPS client can be added using the Push Button method or the PIN method.
•
•
Using a WPS Button to Add a WPS Client
Any wireless computer or wireless adapter that will connect to the gateway wirelessly is a client.
The client must support a WPS PIN, and must have a WPS configuration utility, such as the
NETGEAR Smart Wizard or Atheros Jumpstart.
Before you can add a WPS client, the Security Option in the Wireless Settings screen must be set
To use the gateway WPS button to add a WPS client:
the unit is currently configured.
2. In the main menu, under Setup, select WPS Settings. The Wi-Fi Protected Setup (WPS)
screen displays.
Figure 2-5
By default, the Push Button radio button is selected.
3. Click Add.
•
•
The Wireless LED on the front of the gateway begins to blink.
The gateway tries to communicate with the client for 2 minutes.
4. Go to the client wireless computer, and run a WPS configuration utility. Follow the utility’s
instructions to click a WPS button.
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When the gateway adds the WPS client, it sends the SSID and WPA-PSK or WPA2-PSK
configuration to the client.
Note: If the Security Option in the Wireless Settings screen was set to Disabled, the
gateway automatically changes it to WPA-PSK or WPA2-PSK (including a
PSK security password) when it successfully adds the WPS client. You can
view the gateway’s new settings in the Wireless Settings screen. See
To access the Internet from any computer connected to your gateway, launch a browser such as
Microsoft Internet Explorer or Mozilla Firefox. You should see the gateway’s Internet LED blink,
indicating communication to the ISP.
Using a PIN Entry to Add a WPS Client
Any wireless computer or wireless adapter that will connect to the gateway wirelessly is a client.
The client must support a WPS PIN, and must have a WPS configuration utility, such as the
NETGEAR Smart Wizard or Atheros Jumpstart.
Before you can add a WPS client, the Security Option in the Wireless Settings screen must be set
To use a PIN to add a WPS client:
the unit is currently configured.
2. In the main menu, under Setup, select WPS Settings. The Wi-Fi Protected Setup (WPS)
screen displays.
Figure 2-6
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3. In the main menu, under Setup, select WPS Settings. The Wi-Fi Protected Setup (WPS)
screen displays.
Figure 2-7
4. Select the PIN STA PIN radio button.
5. Go to the client wireless computer. Run a WPS configuration utility. Follow the utility’s
instructions to generate a PIN. Take note of the client PIN.
6. Enter the client’s PIN in the STA PIN field in the WiFi Protected Setup screen (Figure 2-7) of
the gateway, and then click Add.
•
•
The Wireless LED on the front of the gateway begins to blink.
The gateway tries to communicate with the client for 4 minutes.
When the gateway adds the WPS client, it sends the SSID and WPA-PSK or WPA2-PSK
configuration to the client.
Note: If the Security Option in the Wireless Settings screen was set to Disabled, the
gateway automatically changes it to WPA-PSK or WPA2-PSK (including a
PSK security password) when it successfully adds the WPS client. You can
view the gateway’s new settings in the Wireless Settings screen. See
To access the Internet from any computer connected to your gateway, launch a browser such as
Microsoft Internet Explorer or Mozilla Firefox. You should see the gateway’s Internet LED blink,
indicating communication to the ISP.
Connecting Additional Wireless Client Devices
You can add more WPS clients to your wireless network, or you can add a combination of WPS-
enabled clients and clients without WPS.
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Adding Just WPS Clients
To add a wireless client device that is WPS-enabled, follow the procedures in “Using a WPS
Adding Both WPS and Non-WPS Clients
For non-WPS clients, you cannot use the WPS setup procedures to add them to the wireless
To connect a combination of non-WPS enabled and WPS-Enabled clients to the gateway:
1. Restore the gateway to its factory default settings (press the Restore Factory Settings button on
the rear panel of the gateway for 5 seconds).
When the factory settings are restored, all existing wireless clients are disassociated and
disconnected from the gateway.
2. Configure the network name (SSID), select the WPA/PSK or WPA2/PSK radio button on the
click Apply. Record this information to add additional clients.
3. For the non-WPS devices that you want to connect, open the networking utility and follow the
utility’s instructions to enter the security settings that you selected in Step 2 (the SSID, WPA/
PSK or WPA2/PSK security method, and passphrase).
The settings that you configured in Step 2 are broadcast to the WPS devices so that they can
connect to the gateway.
Wireless Guest Networks
A wireless guest network allows you to provide guests access to your wireless network without
prior authorization of each individual guest. You can configure up to three wireless guest networks
and specify the security options for each wireless guest network.
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How to Configure a Wireless Guest Network
To configure a wireless guest network:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
2. In the main menu, under Setup, select Wireless Guest Network.The Wireless Guest Network
Settings screen displays
Figure 2-8
3. Under Guest LAN Settings, enter the following settings for the guest LAN:
•
Current Guest Network. Select a guest network name (SSID) from the pulldown menu.
The default guest network names are Netgear_1, Netgear_2, and Netgear_3. To change the
•
DHCP Server. From the pulldown menu, select whether or not the DHCP server is
enabled:
–
–
Disabled. The DHCP server is disabled for the guest network.
Enabled. The DHCP server is enabled for the guest network.
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•
IP Address. Enter the IP address for the guest network The default IP addresses are as
follows:
–
–
–
Netgear_1: 192.168.1.1
Netgear_2: 192.168.2.1
Netgear_3: 192.168.3.1
Note: The subnet mask has a permanent address of 255.255.255.
•
•
•
Lease Pool Start. Enter the lease pool start IP address for the guest network. The default
lease pool start IP addresses are as follows:
–
–
–
Netgear_1: 192.168.1.10
Netgear_2: 192.168.2.10
Netgear_3: 192.168.3.10
Lease Pool End. Enter the lease pool end IP address for the guest network. The default
lease pool end IP addresses are as follows:
–
–
–
Netgear_1: 192.168.1.99
Netgear_2: 192.168.2.99
Netgear_3: 192.168.3.99
Lease Time. Enter the lease time for the guest network. The default is 86400 seconds
(24 hours).
4. Under Guest WiFi Settings, select the Enable Guest Network check box.
5. Click Apply to enable the selected guest network. The screen expands and the security options
display. To configure the security options, see “How to Configure Wireless Security for a
Note: NETGEAR strongly recommends that you change the default guest network
name (SSID) from the default name to a different name. Note that the name is
case-sensitive. For example, GuestNetwork is not the same as Guestnetwork.
6. You can now change the Guest Network Name (SSID) for the selected guest network. Enter a
value of up to 32 alphanumeric characters. For the selected guest network, the same name
must be assigned to all wireless devices in your network. After you have changed the name,
click Apply again to activate the new name.
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How to Configure Wireless Security for a Wireless Guest Network
Note: To restore all guest network settings, including the wireless security settings, to
their default settings, click Restore Guest Network Settings.
options for the guest network display.
Figure 2-9
Wireless security is disabled by default. NETGEAR strongly recommends that you implement
wireless security for the guest network.
To configure wireless security for the guest network that you selected, enter the security options,
and then click Apply to save your changes. This process is very similar to configuring wireless
security for the gateway. For more information, see “Configuring WEP (Wired Equivalent
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Configuring Wi-Fi Multimedia
Wi-Fi Multimedia (WMM), also referred to as Wireless Multimedia, is a subset of the 802.11e
standard. WMM allows wireless traffic to have a range of priorities, depending on the kind of data.
Time-dependent information, like video, audio, or voice will have a higher priority than normal
traffic.With WMM you can configure quality of service (QoS) to prioritize multimedia traffic in
four access categories: voice, video, best effort, and background. For WMM to function correctly,
wireless clients must also support WMM.
To configure WMM:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
2. In the main menu, under Setup, select Wi-Fi Multimedea. The Wi-Fi Multimedia (WMM)
screen displays.
Figure 2-10
3. Configure the following WMM settings:
•
•
WMM Support. Select the WMM mode:
–
–
On. WMM is enabled
Off. WMM is disabled.
No-Acknowledgement. When the wireless communication quality is good, you do not
need an acknowledgement message (ACK) to confirm the reception of a packet. Disabling
acknowledgement messages might improve the efficiency of packet transmission. When
the wireless communication quality is poor, enable acknowledgement messages so that
you are notified when a package is lost.
–
On. Acknowledgement messages are enabled.
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–
Off. Acknowledgement messages are disabled.
•
Power Save Support. Select the power save mode to conserve battery power in smaller
devices that are connected to the gateway:
–
–
On. Power save support is enabled.
Off. Power save support is disabled.
4. Click Apply to save your settings.
Turning on Access Control to Restrict Access by MAC
Address
By default, any wireless PC that is configured with the correct SSID and WEP/WPA settings will
be allowed to access to your wireless network. For increased security, you can restrict access to the
wireless network to only allow specific PCs based on their MAC addresses.
You can restrict access to only trusted PCs so that unknown PCs cannot wirelessly connect to the
CGD24G gateway. MAC address filtering adds an obstacle against unwanted access to your
network, but the data broadcast over the wireless link is fully exposed.
To restrict access based on MAC addresses:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
Note: If you are configuring the gateway from a wireless computer, make sure to add
your computer’s MAC address to the Access List. Otherwise you will lose your
wireless connection when you click Apply. You must then access the gateway
from a wired computer, or from a wireless computer that is on the access
control list, to make any further changes.
2. In the main menu, under Setup, select Wireless Settings. In the Wireless Settings screen,
3. When you enable access control, the access point only accepts connections from clients on the
selected access control list. This provides an additional layer of security.
4. Click the Setup Access List button to display the Wireless Card Access List screen.
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Figure 2-11
By default, the Access List table is empty. You must add wireless clients so that they will have
access to the wireless network when the list is enabled.
5. Adjust the access list as needed for your network. You can add devices to the access list using
either one of the following methods:
•
•
If the computer is in the Connected Wireless Devices table, click the radio button of that
computer to capture its MAC address. Then click Add.
Enter the MAC address of the device to be added in the Add Access Filter fields. The
MAC address can usually be found on the bottom of the wireless device. Then click Add.
Note: If no Device Name appears when you enter the MAC address, you can type a
descriptive name for the computer that you are adding.
6. Click Apply to save these settings. Now, only devices in the Access List table will be allowed
to wirelessly connect to the gateway.
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Chapter 3
Content Filtering and Firewall Rules
This chapter describes how to use content filtering and firewall rules for the gateway.
IP address the unit is currently configured. To access the content filtering features
you must log in to the gateway with the mso user name and its default password
changeme, or whatever new password you have set up.
This chapter includes:
•
•
•
“Configuring Logs” on this page
Configuring Logs
A log is a detailed record of the Denial of Service (DoS) attacks directed at your network. You can
use e-mail notification to receive these logs in an e-mail message. If you do not have e-mail
notification set up you can connect to the gateway to view the logs.
To receive logs by e-mail:
1. In the main menu, under Content Filtering, select Logs. The Logs screen displays.
Figure 3-1
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2. Enter the following information:
•
•
•
Contact Email Address. Enter an e-mail address to which the logs will be sent. Use a full
e-mail address (for example, ChrisXY@myISP.com).
SMTP Server Name. Enter the outgoing SMTP mail server of your ISP (for example,
mail.myISP.com). If you leave this box blank, no alerts or logs will be sent.
Sender Email Address. Enter an e-mail address from which the logs will be sent. Use a
full e-mail address (for example, JohnXY@myISP.com).
3. Select the E-mail Alerts Enable check box to activate the e-mail alerts.
4. Click Apply to save your settings.
Blocking Keywords, Sites, and Services
The gateway provides a variety of options for blocking Internet based content and
communications services. With its content filtering feature, the gateway prevents objectionable
content from reaching your PCs. The gateway allows you to control access to Internet content by
screening for keywords within Web addresses. It also has the capability to block access to all
sites except those that are explicitly allowed.
Key content filtering options include:
•
•
•
Blocking access from your LAN to Internet locations that contain keywords that your specify.
Blocking access to websites that you specify as off-limits.
Allowing access to only websites that you specify as allowed.
Blocking Keywords and Domains
The gateway allows you to restrict access to Internet content based on functions such as Web
address keywords and Web domains. A domain name is the name of a particular website. For
To block keywords and domains:
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1. In the main menu, under Content Filtering, select Block Sites. The Block Sites screen displays.
Figure 3-2
2. To use keyword blocking, select the Keyword Blocking Enable check box. You can enter up
to eight keywords. After you have entered a keyword in the field to the left of the Add
Keyword button, click Add Keyword. The keyword will be shown in the Keyword List.
Note the following:
•
•
If the keyword .com is specified, only websites with other domain suffixes (such as .edu,
.org, or .gov) can be viewed.
•
Enter the keyword “.” to block all Internet browsing access.
To remove a keyword from the Keyword List, select the keyword, and then click Remove
Keyword.
3. You can use the Domain List to create a list of allowed domains, or to create a list of denied
domains. To use domain blocking, select the Domain Blocking Enable check box. After you
have entered a domain in the field to the left of the Add Domain button, click Add Domain.
The domain will be shown in the Domain List.
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To remove a domain from the Domain List, select the domain, and then click Remove
Domain.
4. Click Apply to save your settings.
Blocking Services
You can use the Services screen to control which services are enabled or disabled. To enable or
disable certain gateway features and web features:
1. In the main menu, under Content Filtering, select Services. The Services screen displays.
Figure 3-3
2. To enable a service, select its check box. To disable a service, clear its check box. The
following table describes the services.
Table 3-1. Services
Settings
Description
Firewall Features
When firewall features are enabled, the gateway
performs stateful packet inspection (SPI) and protects
against denial of service (DoS) attacks.
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Table 3-1. Services (continued)
Settings
Description
VPN Pass Through
When VPN passthrough is enabled, IPSec and PPTP
traffic are forwarded. When it is disabled, this traffic is
blocked.
Multicast
When multicast is enabled, the gateway passes
multicasting streams through the firewall.
Web Features Filter Proxy
Filter Cookies
When enabled, these features are not blocked by the
firewall. When disabled, these features are blocked by
the firewall. You can enable or disable each of these
features individually.
Filter Java Applets
Filter ActiveX
Filter Popup Windows
Block Fragmented IP
Packets
3. Click Apply to save your settings.
Firewall Rules—Port Forwarding and Port Blocking
A firewall has two default rules, one for inbound traffic (WAN to LAN) and one for outbound
traffic.
•
•
Inbound Rules (Port Forwarding)
These rules restrict access from outsiders. The default rule is to block all access from outside
except responses to requests from the LAN side. You can use port forwarding to add
predefined or custom rules to specify exceptions to the default rule.
Outbound Rules (Port Blocking)
These rules control access to outside resources from local users.The default rule is to allow all
access from the LAN side to the outside. You can use port blocking to add predefined or
custom rules to specify exceptions to the default rules.
Configuring Port Forwarding
Because the gateway uses Network Address Translation (NAT), your network presents only one IP
address to the Internet, and outside users cannot directly address any of your local computers.
However, by defining an inbound rule you can make a local server (for example, a web server or
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game server) or computer visible and available to the Internet. The rule tells the gateway to direct
inbound traffic for a particular service to one local server or computer based on the destination port
number. This is also known as port forwarding.
Note: Some residential broadband ISP accounts do not allow you to run any server
processes (such as a web or FTP server) from your location. Your ISP may
periodically check for servers and may suspend your account if it discovers
any active services at your location. If you are unsure, refer to the Acceptable
Use Policy of your ISP.
To configure port forwarding and services for specific inbound traffic:
1. In the main menu, under Advanced, select Port Forwarding. The Port Forwarding screen
displays.
Figure 3-4
2. Under Choose Predefined Service, select a predefined service from the Service field. (For
example, FTP, which uses TCP ports 20 and 21.)
3. As an option, you can also specify a custom rule that is not in the list of predefined services by
specifying the following settings in the Add Custom Rules table:
•
•
•
Name. Enter a name for the service.
Start Port. Enter the start port for the service.
End Port.Enter the end port for the service.
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•
•
Protocol. Select the protocol for the ports:
–
–
–
TCP. Select TCP only.
UDP. Select UDP only.
Both. Select both TCP and UDP.
Local IP Address. Complete the local IP address for the computer that is using the
service.
Note: To reset the selection in the Service field and to clear all the fields in the Add
Custom Rules table, click Reset.
4. Perform one of the following actions:
•
Click Add to save your settings. The Active Forwarding Rules table now displays the list
of ports that are currently forwarded.
•
To delete a service, select the radio button in the Active Forwarding Rules table for the
service that you want to delete, and then click Delete.
Considerations for Port Forwarding
•
If the IP address of the local server PC is assigned by DHCP, it may change when the PC is
rebooted. To avoid this, you can assign a static IP address to your server outside the range that
is assigned by DHCP, but in the same subnet as the rest of your LAN. By default, the IP
addresses in the range of 192.168.0.2 through 192.168.0.9 are reserved for this purpose.
•
Local PCs must access the local server using the PCs’ local LAN address (192.168.0.XXX, by
default). Attempts by local PCs to access the server using the external WAN IP address will
fail.
Remember that allowing inbound services opens holes in your firewall. Only enable those ports
that are necessary for your network.
Configuring Port Blocking
You can use port blocking to block outbound traffic on specific ports.
Note: Any outbound traffic that is not blocked by rules that you have created is allowed
by the default rule.
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To configure port blocking and services to block specific outbound traffic:
1. In the main menu, under Advanced, select Port Blocking. The Port Blocking screen displays.
Figure 3-5
2. Under Add Predefined Service, select a predefined service from the Service field. (For
example, FTP, which uses TCP ports 20 and 21.)
3. As an option, you can also specify a custom rule that is not in the list of predefined services by
specifying the following settings in the Add Custom Service table:
•
•
•
•
Name. Enter a name for the service.
Start Port. Enter the start port for the service.
End Port.Enter the end port for the service.
Protocol. Select the protocol for the ports:
–
–
–
TCP. Select TCP only.
UDP. Select UDP only.
Both. Select both TCP and UDP.
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•
Local IP Address. Complete the local IP address for the computer that is using the
service.
Note: To reset the selection in the Service field and to clear all the fields in the Add
Custom Rules table, click Reset.
4. Perform one of the following actions:
•
Click Add to save your settings. The Active Filters table now displays the list of ports that
are currently forwarded.
•
To delete a service, select the radio button in the Active Filters table for the service that
you want to delete, and then click Delete.
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Chapter 4
Managing Your Network
This chapter describes how to perform network management tasks with your CGD24G gateway.
When you log in to the gateway, these tasks are grouped under Maintenance.
This chapter includes:
•
•
•
•
•
•
“Viewing the Gateway Status” on this page
unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
Viewing the Gateway Status
Use the Gateway Status screen to see hardware and firmware details about the gateway and to see
basic status information. In the main menu, under Maintenance, select Gateway Status. The
Gateway Status screen displays.
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Figure 4-1
The Gateway Status screen fields are explained in the following table.
Table 4-1. Gateway Status Fields
Field
Description
Information Standard Specification
Compliant
The specification to which the gateway’s cable interface is
compatible.
Hardware Version
Software Version
The hardware version of the gateway.
The software version of the gateway.
Cable Modem MAC Address The MAC address used by the cable modem port of the
gateway. This MAC address may need to be registered with
your Cable Service Provider.
Device MAC Address
The MAC address of the router side of the gateway. This is the
equivalent of your PC when connected to a cable modem. You
can use the MAC Cloning feature to replace this MAC address
with another address when sending packets to the WAN.
Cable Modem Serial Number The serial number of the gateway hardware.
CM Certificate If the Cable Modem certificate is Installed, it is possible for the
service provider to upgrade your Data Over Cable service
securely.
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Table 4-1. Gateway Status Fields (continued)
Field
Description
Status
System Up Time
Network Access
Device IP Address
This is the time since the gateway has registered with your
cable service provider.
This field will change to Allowed when the registration with your
cable service provider is complete.
The IP address of you gateway, as seen from the Internet.
Viewing the Connection Status
Use the Connection screen to track the gateway’s initialization procedure, and to get details about
the downstream and upstream cable channel. After the cable modem is initialized you can see the
current time.
Figure 4-2
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The gateway automatically goes through the following steps in the provisioning process:
1. It acquires and locks the downstream channel
2. It acquires the upstream parameters and range.
3. It locks the upstream channel
4. It acquires the IP address through DHCP
Changing the Built-In Password
For security reasons, the gateway has its own user name and password. Also, after a period of
inactivity for a set length of time, the administrator login will automatically disconnect. When
prompted, enter admin for the gateway user name and password for the gateway password. You
can use procedures below to change the gateway’s password.
Note: The user name and password are not the same as any user name or password you
may use to log in to your Internet connection.
NETGEAR recommends that you change this password to a more secure password. The ideal
password should contain no dictionary words from any language, and should be a mixture of both
upper and lower case letters, numbers, and symbols. Your password can be up to 30 characters.
To change the password:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
2. In the main menu, under Maintenance, select Set Password. The Set Password screen
displays.
Figure 4-3
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3. To change the password, first enter the old password, and then enter the new password twice.
4. Click Apply to save your changes.
Note: After changing the password, you will be required to log in again to continue the
configuration. If you have backed up the gateway settings previously, you should
do a new backup so that the saved settings file includes the new password.
Resetting to Factory Default Settings
You can erase the gateway configuration and reset it to the factory default settings. For information
gateway to its factory settings:
1. In the Set Password screen (see Figure 4-3), to the right of Restore Factory Defaults, select the
Yes radio button.
2. Click Apply to save your changes.
The gateway reboots automatically. After rebooting, the gateway’s password will be
password, the LAN IP address will be 192.168.0.1, and the gateway’s DHCP client will be
enabled..
Note: If you do not know the login password or IP address, you can use the reset
button on the rear panel of the gateway to restore the factory default settings.
Note: When erasing and resetting the configuration, do not interrupt the process by going
on online, turning off the gateway, or shutting down the computer.
Backing Up and Restoring Your Settings
The configuration settings of the gateway are stored in a configuration file in the gateway. To see
the backup settings:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
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2. In the main menu, under Maintenance, select Backup Settings. The Backup Settings screen
displays.
Figure 4-4
You can save a copy of the current configuration settings or restore the saved settings:
•
•
To save a copy of the current configuration settings, click Backup.
To restore the saved configuration settings from a backup file:
a. Click Browse.
b. Locate and select the previously saved backup file (by default, CGD24G-100NAS.cfg).
c. Click Restore.
A message notifies you when the gateway has been restored to previous settings. Then, the
gateway restarts, which takes about one minute.
Note: When restoring configuration settings, do not interrupt the process by going on
online, turning off the gateway, or shutting down the computer.
Viewing the Event Log
The gateway logs security-related events such as denied incoming service requests and hacker
probes. To see the event log:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
2. In the main menu, under Maintenance, select Event Log. The Event Log screen displays.
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Figure 4-5
To clear the log, click Clear Log; to refresh the log, click Refresh. You can enable e-mail
notification to receive these logs in an e-mail message. For information about e-mail
Running Diagnostic Utilities
You can use the Diagnostics screen to test connectivity to a PC using the ping command.
To start a ping test:
the unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
2. In the main menu, under Maintenance, select Diagnostics. The Diagnostics screen displays.
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Figure 4-6
3. Under Ping Test Parameters, enter the following settings:
•
•
•
•
Ping Target. Enter the IP address of the computer that you would like to ping.
Ping Size. Enter the size of the ping packet.
No. of Pings. Enter the number of times you would like to ping the computer.
Ping Interval. Enter the time you would like to wait between the pings.
4. Click Start Test.To stop the test while in progress, click Abort Test.
5. To see the results of the ping test, click REFRESH. To clear the test results after the test has
completed, click Clear Test.
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Chapter 5
Customizing Your Network
This chapter describes how to customize your network through the advanced settings on your
CGD24G gateway. When you log in to the gateway, these tasks are grouped under Advanced.
This chapter includes:
•
•
•
•
•
•
•
“Configuring Dynamic DNS” on this page
Note: For information about port forwarding and port blocking, see
unit is currently configured. Use the default user name of admin and default password of
password, or the password you have set up.
Configuring Dynamic DNS
A dynamic DNS service provides a central public database where information (such as e-mail
addresses, host names and IP addresses) can be stored and retrieved. The dynamic DNS server also
stores password-protected information and accepts queries based on e-mail addresses.
If you want to use a dynamic DNS service, you must register for it. The dynamic DNS client
service provider will give you a password or key.
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To configure dynamic DNS:
1. In the main menu, under Advanced, select Dynamic DNS. The DDNS screen displays.
Figure 5-1
3. Enter the following information:
•
•
•
User Name. Enter the user name for your dynamic DNS account.
Password. Enter the password (or key) for your dynamic DNS account.
Host Name. Enter the host same that your dynamic DNS service provider gave you. (The
DDNS service provider may call this the domain name.)
4. Click Apply to save your settings.
To disable dynamic DNS:
1. In the DDNS Service field, select Disabled.
2. Click Apply to save your settings.
Restricting Access by MAC Address
By default, the gateway allows any connected PC to access the Internet through. The MAC
Filtering screen enables you to block specific PCs, based on their MAC address, from access to the
Internet on selected days and times.
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To configure MAC filtering:
1. In the main menu, under Advanced, select MAC Filtering. The MAC Filtering screen displays.
Figure 5-2
The Trusted Devices table shows the PCs that are allowed access to the Internet through the
gateway. Click Refresh to update the Trusted Devices table.
2. Select a device that will be added to the Add MAC Filter table through one of the following
methods:
•
If the PC that you want to block appears in the Trusted Devices table, click the radio
button for that PC to capture its MAC address in the Add MAC Filter table. If a MAC
address but no device name appears in the Add MAC Filter table, you can type a
descriptive name for the PC that you are adding to the table.
•
Manually enter the device name and MAC address of the PC you want to block to the Add
MAC Filter table.
3. To add the device that you selected in step 2 to the MAC Filter List, click Add. When you do
so, the Enable check box is automatically selected for that PC. Also note the following:
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•
•
To deselect a PC from the MAC Filter List, select the PC from the drop-down list, and
then clear its Enable check box. Doing so leaves the PC in the MAC Filter List but
ensures that the PC is not blocked.
To remove a PC from the MAC Filter List, select the PC from the drop-down list, and then
click Delete.
4. Select the days and times that a selected PC will be blocked:
a. Day(s) to Block. Select the days on which the PC that is selected in the MAC Filter List
will be blocked. The default is Everyday.
b. Time of Day to Block. Select a start time and an end time to specify a period during
which the PC that is selected in the MAC Filter List will be blocked. The default is All
Day. Be sure that you deselect the All Day check box if you want to enter specific times.
The selected period applies to each day that you selected in the previous step.
5. Click Add to save your settings.
6. Repeat step 2 through step 5 for all PCs that you want to block.
Configuring Port Triggering
Port triggering is an advanced feature that can be used to easily enable gaming and other Internet
applications that would otherwise be blocked by the firewall. Using this feature requires that you
know the port numbers that are used by the application.
Note: For information about port forwarding and port blocking, see
Port triggering is an advanced feature that can be used to easily enable gaming and other Internet
applications that would otherwise be blocked by the firewall. Using this feature requires that you
know the port numbers that are used by the application.
Once configured, port triggering operation is as follows:
1. A PC makes an outgoing connection using a port number defined in the Port Triggering table.
2. The gateway records this connection, opens the incoming port or ports associated with this
entry in the Port Triggering List, and associates them with the PC.
3. The remote system receives the PCs request, and responds using a different port number.
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4. The gateway matches the response to the previous request, and forwards the response to the
PC. (Without port triggering, this response would be treated as a new connection request rather
than a response. As such, it would be handled in accordance with the port forwarding rules.)
Note: Only one PC can use a port triggering application at any time. After a PC has
finished using a port triggering application, there is a short time-out period before
the application can be used by another PC.
To configure port triggering:
1. In the main menu, under Advanced, select Port Triggering. The Port Triggering screen
displays.
Figure 5-3
2. For each port trigger that you would like to enable, enter the following settings in the Port
Trigger List and enable the port trigger:
•
Trigger Range. The trigger range consists of the range of outgoing ports that will be
monitored to trigger the incoming port forwarding rule:
–
Start Port. Enter the start port for the trigger range.
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–
End Port. Enter the start port for the trigger range.
•
•
Target Range. The target range consists of the range of incoming ports that will be
opened when triggered:
–
–
Start Port. Enter the start port for the target range.
End Port. Enter the start port for the target range.
Protocol. Select the protocol for the ports,:
–
–
–
TCP. Select TCP only.
UDP. Select UDP only.
Both. Select both TCP and UDP.
•
Select the Enable check box to activate the port trigger.
3. Perform one of the following actions:
•
•
•
Click Apply to save your settings and activate the port triggers that you have enabled in
step 2.
Click Delete to remove a port trigger that you can select by clicking the radio box next to
the port trigger that you want to delete.
Click Reset to return all trigger and target ranges to their default values of zero.
Setting Up a DMZ Host
You can use the DMZ Host screen to set the gateway to respond to a ping and specify a DMZ
address. To configure a default DMZ host:
1. In the main menu, under Advanced, select DMZ Host. The DMZ Host screen displays.
Figure 5-4
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2. If you want the gateway to respond to a ping from the Internet, select the Respond to Ping on
WAN check box. Responding to pings can be useful in a diagnostic situation.
3. Complete the DMZ IP address in the DMZ Address field to designate a PC that is available to
anyone on the Internet for services that you have not defined. Because of security concerns,
only do this if you are willing to risk open access. If you do not assign a DMZ address, the
gateway discards any undefined service request.
4. Click Apply to save your settings.
LAN IP Settings
The LAN IP screen allows you to configure LAN IP services such as the IP address of the gateway
and DHCP. The TCP/IP and DHCP default values work fine in most cases.
To configure LAN IP settings:
1. In the main menu, under Advanced, select LAN IP. The LAN IP screen displays.
Figure 5-5
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2. Enter the following LAN IP settings:
•
•
•
LAN IP Address. Enter the LAN IP address that you would like to assign for your
gateway in dotted decimal notation. The factory default settings is 192.168.0.1.
Subnet Mask. Enter the network number portion of an IP address. Unless you are
implementing subnetting, use 255.255.255.0 as the subnet mask.
DHCP Server. The gateway is set up by default as a Dynamic Host Configuration
Protocol (DHCP) server, which provides the TCP/IP configuration for all the computers
that are connected to the gateway. You can change the default setting.
–
Yes. Select this settings to enable the DHCP server on the gateway and assign IP
addresses to computers on your LAN automatically.
–
No. Select this settings to assign IP addresses manually, or if you have another DHCP
server on your network.
Note: If you disable the DHCP server, you will need to assign to your PC a
static IP address to reconnect to the gateway and enable the DHCP
server again.
•
•
Starting IP Address. Complete the first of the contiguous addresses in the IP address
pool. 192.168.0.10 is the default start address.
Ending IP Address. Complete the last of the contiguous addresses in the IP address pool.
192.168.0.19 is the default end address.
3. Click Apply to save your LAN IP settings.
Reserving an IP Address for DHCP Use
To reserve an IP address for DHCP use, enter the DHCP server reservation settings for the private
LAN under DHCP Reservation Lease Info in the LAN IP screen:
1. Enter the MAC address of the PC for which you want to reserve an IP address.
2. Enter the permanent IP address for the PC.
3. Click Add to save your settings.
The MAC address and IP address are displayed in the DHCP Client Lease Info table. The current
system time is also displayed.
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To delete an IP address from the DHCP Client Lease Info table:
1. In the DHCP Client Lease Info table, click the radio button for the MAC and IP address that
you want to remove.
2. Click Delete to remove the information for the selected MAC and IP address from the DHCP
Client Lease Info table.
To remove all information from the DHCP Client Lease Info table, click Clear DHCP Leases.
Enabling Remote Management
With Remote Management, you can allow a user or users on the Internet to configure, upgrade,
and check the status of the gateway.
To configure the gateway for remote management:
1. In the main menu, under Advanced, select Remote Management. The Remote Management
screen displays.
Figure 5-6
2. Select the Allow Remote Management check box.
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3. Enter the following information:
•
Remote Password. Enter the user name that will be used from the remote PC to manage
the gateway. This password is different from the password that you use to log into the
gateway from your LAN.
Note: Be sure to change the gateway’s remote management password to a very
secure password before enabling remote management. The ideal password
should contain no dictionary words from any language, and should be a
mixture of letters (both upper and lower case), numbers, and symbols.
Your password can be up to 16 characters.
•
Port Number. Specify the port number that will be used for accessing the management
interface. The default port number is 80.
Note: Web browser access normally uses the standard HTTP service port 80. For
greater security, you can change the remote management Web interface to
a custom port by entering that number in the box provided. Choose a
number between 1024 and 65535, but do not use the number of any
common service port. The default is 8080, which is a common alternate for
HTTP.
4. Click Apply to save your changes.
Reverting to Factory Default Setting
If you would like to erase settings but continue to allow access from the WAN after the settings
have been erased, select the Allow Remote Management after Factory Default Reset check box
under “Revert to factory default settings” in the Remote Management screen. Then, click Erase.
Note: Do not attempt to go online, turn off the gateway, shut down the computer,
or do anything else to the gateway until the gateway finishes restarting.
When the test light turns off, wait a few more seconds before you do
anything with the gateway.
After you have erased the gateway’s current settings, the gateway’s
password will be password, the LAN IP address will be 192.168.0.1, the
gateway will function as a DHCP server on the LAN, and the gateway will
function as a DHCP client to the Internet.
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Managing the URL to Connect to The Gateway
To manage the gateway via the Internet, you need its public IP address, as seen from the Internet.
This public IP address is allocated by your ISP, and is shown under “IP Address to connect this
device” in the Remote Management screen. Note that if your ISP account uses a dynamic IP
address instead of a fixed IP address, the address can change each time you connect to your ISP.
There are two solutions for this issue:
•
•
Be sure that your ISP allocates a fixed IP address for the gateway.
Use the Dynamic DNS feature so you can connect using a domain name, rather than an IP
Configuring Universal Plug and Play (UPnP)
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, access
the network and connect to other devices as needed. UPnP devices can automatically discover the
services from other registered UPnP devices on the network.
To configure UPnP:
1. In the main menu, under Advanced, select UPnP. The UPnP screen displays.
Figure 5-7
2. Select the Turn UPnP On check box. The default setting is disabled, which prevents the
gateway from allowing any device to automatically control of its the resources, such as port
forwarding.
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3. Enter the following information:
•
•
Advertisement Period. Enter how often the gateway broadcasts its UPnP information.
The default is 30 minutes.Shorter durations will ensure that control points have current
device status at the expense of additional network traffic. Longer durations may
compromise the freshness of the device status but can significantly reduce network traffic.
Advertisement Time to Live. Enter the time to live for the advertisement, which is
measured in hops (steps) for each UPnP packet that is sent. A hop is the number of steps
that are allowed to propagate for each UPnP advertisement before it disappears. The
number of hops can range from 1 to 255. The default value for the advertisement time to
live is 4 hops, which should be fine for most home networks. If you notice that some
devices are not being updated or reached correctly, you might need to increase this value
slightly.
The UPnP Portmap Table displays the IP address of each UPnP device that is currently
accessing the router and which internal and external ports of the gateway were opened by that
device. The UPnP Portmap Table also displays the protocol for the port that was opened and if
that port is still active for each IP address.
4. Perform one of the following actions:
•
•
•
Click Apply to save your settings.
Click Cancel to disregard any unsaved changes.
Click Refresh to update the UPnP Portmap Table and to show the active ports that are
currently opened by UPnP devices.
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Chapter 6
Troubleshooting
This chapter gives information about troubleshooting your CGD24G Wireless Cable Modem
Gateway. For the common problems listed, go to the section indicated.
Tip: NETGEAR provides helpful articles, documentation, and the latest software
•
•
•
•
Have I connected the gateway correctly?
I cannot access the gateway configuration with my browser.
I have configured the gateway but I cannot access the Internet.
Go to “Troubleshooting the ISP Connection” on page 6-4.
I cannot remember the gateway’s configuration password or I want to clear the configuration
and start over again.
Basic Functions
After you have turned on power to the gateway, you should do the following:
1. When power is first applied, verify that the Power LED is on.
2. Verify that the numbered Ethernet LEDs come on momentarily.
3. After a few seconds, verify that the Local port Link LEDs are lit for any local ports that are
connected.
If any of these conditions does not occur, refer to the appropriate following section.
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Using LEDs to Troubleshoot
The following table provides help when using the LEDs for troubleshooting.
Table 6-1. Using LEDs to Troubleshoot
LED Behavior
Action
All LEDS are off when the gateway Make sure that the power cord is properly connected to your gateway
is plugged in.
and that the power supply adapter is properly connected to a
functioning power outlet.
Check that you are using the 12VDC power adapter supplied by
NETGEAR for this product.
If the error persists, you have a hardware problem and should contact
technical support.
All LEDs Stay On
• Clear the gateway’s configuration to factory defaults. This will set the
gateway’s IP address to 192.168.0.1. See “Backing Up and Restoring
• If the error persists, you might have a hardware problem and should
contact technical support.
LAN LED is off for a port with an
Ethernet connection.
• Make sure that the Ethernet cable connections are secure at the
gateway and at the hub or PC.
• Make sure that power is turned on to the connected hub or PC.
• Be sure you are using the correct cable.
Cable Link LED is off and the
gateway is connected to the cable
television cable.
• Make sure that the coaxial cable connections are secure at the
gateway and at the wall jack.
• Make sure that your cable internet service has been provisioned by
your cable service provider. Your provider should verify that the signal
quality is good enough for cable modem service.
• Remove any excessive splitters you may have on your cable line. It
may be necessary to run a “home run” back to the point where the
cable enters your home.
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Connecting to the Gateway’s Main Menu
If you are unable to access the gateway’s main menu from a computer on your local network,
check the following:
•
Check the Ethernet connection between the computer and the gateway as described in the
previous section.
•
Make sure that your PC’s IP address is on the same subnet as the gateway. If you are using the
recommended addressing scheme, your PC’s address should be in the range of 192.168.0.10 to
192.168.0.254. Refer to the link to the online document “ITCP/IP Networking Basics” in
Appendix B for help configuring your computer.
Note: If your PC’s IP address is shown as 169.254.x.x:
Recent versions of Windows and MacOS will generate and assign an IP
address if the computer cannot reach a DHCP server. These auto-generated
addresses are in the range of 169.254.x.x. If your IP address is in this range,
check the connection from the PC to the gateway and reboot your PC.
•
•
If your gateway’s IP address has been changed and you don’t know the current IP address,
clear the gateway’s configuration to factory defaults. This will set the gateway’s IP address to
Make sure your browser has Java, JavaScript, or ActiveX enabled. If you are using Internet
Explorer, click Refresh to make sure that the Java applet is loaded.
•
•
Try quitting the browser and launching it again.
Make sure you are using the correct login information. The gateway has two user names both
lower-case (Caps Lock should be off):
–
–
The superuser login name is mso with the default password of changeme.
The other login name is admin with the default password of password.
If the gateway does not save changes you have made, check the following:
•
When entering configuration settings, be sure to click the Apply button before moving to
another screen, or your changes are lost.
•
Click the Refresh or Reload button in the Web browser. The changes may have occurred, but
the Web browser may be caching the old configuration.
Troubleshooting
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Troubleshooting the ISP Connection
If your gateway is unable to access the Internet and your Cable Link LED is on, you may need to
register the Cable MAC Address and/or Device MAC Address of you gateway with your cable
Additionally, your PC may not have the gateway configured as its TCP/IP gateway. If your PC
obtains its information from the gateway by DHCP, reboot the PC and verify the gateway address.
Troubleshooting a TCP/IP Network Using a Ping Utility
Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request packet
to the designated device. The device then responds with an echo reply. Troubleshooting a TCP/IP
network is made easier by using the ping utility in your PC or workstation.
Testing the LAN Path to Your Gateway
You can use ping to verify that the LAN path to your gateway is set up correctly.
To ping the gateway from a PC running Windows 95 or later:
1. From the Windows toolbar, click on the Start button and select Run.
2. In the field provided, type Ping followed by the IP address of the gateway, as in this example:
ping 192.168.0.1
3. Click OK.
You should see a message like this one:
Pinging <IP address> with 32 bytes of data
If the path is working, you see this message:
Reply from < IP address >: bytes=32 time=NN ms TTL=xxx
If the path is not working, you see this message:
Request timed out
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If the path is not working correctly, you could have one of the following problems:
•
Wrong physical connections.
–
Make sure the LAN port LED is on. If the LED is off, see “Using LEDs to
–
Check that the corresponding Link LEDs are on for your network interface card and
for the hub ports (if any) that are connected to your workstation and gateway.
•
Wrong network configuration.
–
Verify that the Ethernet card driver software and TCP/IP software are both installed
and configured on your PC or workstation.
–
Verify that the IP address for your gateway and your workstation are correct and that
the addresses are on the same subnet.
Testing the Path from Your PC to a Remote Device
After verifying that the LAN path works correctly, test the path from your PC to a remote device.
From the Windows run menu, type:
PING -n 10 <IP address>
where <IP address> is the IP address of a remote device such as your ISP’s DNS server.
If the path is functioning correctly, replies as in the previous section are displayed. If you do not
receive replies:
•
Check that your PC has the IP address of your gateway listed as the default gateway. If the IP
configuration of your PC is assigned by DHCP, this information will not be visible in your
PC’s Network Control Panel. Verify that the IP address of the gateway is listed as the default
•
Check to see that the network address of your PC (the portion of the IP address specified by
the netmask) is different from the network address of the remote device.
•
•
Check that your Cable Link LED is on.
If your ISP assigned a host name to your PC, enter that host name as the Account Name in the
Basic Settings menu.
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Appendix A
Technical Specifications and Factory Default
Settings
This appendix provides technical specifications and default factory settings for the CGD24G
Wireless Cable Modem Gateway.
Technical Specifications
Table A-1. Technical Specifications
Specification
Description
Network Protocol and Standards Compatibility
Data and routing protocols
• TCP/IP
• DHCP server and client
• DNS relay
• NAT (many-to-one)
• TFTP client
• VPN pass through (IPSec, PPTP)
• North America (input): 120V, 60 Hz, input
• All regions (output): 12 V DC @ 1A output, 12W maximum
Power Adapter
• Dimensions: 175 by 114 by 30 mm (6.9 by 4.5 by 1.2 in.)
• Weight: 0.31 kg (0.68 lb)
Physical Specifications
• Operating temperature: 32°-140° F (0° to 40° C)
• Operating humidity: 90% maximum relative humidity,
noncondensing.
Environmental Specifications
Electromagnetic Emissions
Meets requirements of FCC Part 15 Class B
Interface Specifications
LAN
10BASE-T or 100BASE-Tx, RJ-45
USB 1.1 Function
802.11g and 802.11b Wireless Access Point
WAN
DOCSIS 2.0. Downward compatible with DOCSIS 1.0 and
DOCSIS 1.1.
Technical Specifications and Factory Default Settings
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Table A-1. Technical Specifications (continued)
Specification
Wireless
Description
Radio data rates
1, 2, 5.5, 6, 9, 12, 18, 24, 36, 48, 54, and 108 Mbps
Auto Rate Sensing
Frequency
2.4-2.5 GHz
Operating frequency ranges
2.412~2.462 GHz (US)
2.412~2.472 GHz (Japan)
2.412~2.472 GHz (Europe ETSI)
Encryption
40-bit (also called 64-bit), 128-bit WEP data encryption,
WPA-PSK(TKIP), and WPA2-PSK(AES)
Factory Default Settings
You can use the reset button located on the rear panel of your Product Family to reset all settings to
their factory defaults. This is called a hard reset. To perform a hard reset, push and hold the reset
button for 5 seconds. The gateway reboots and returns to the settings shown in the following table.
Table A-2. Default Configuration Settings
Feature
Default Behavior
Gateway Login
User login URL
User names and passwords (case
sensitive)
• mso/changme
• admin/password
Local Network (LAN)
LAN IP
192.168.0.1
255.255.255.0
Enabled
Subnet mask
DHCP server
DHCP starting IP address
DHCP Ending IP address
192.168.0.10
192.168.0.19
Firewall
Inbound communication from the Internet Disabled (except traffic on port 80, the http port)
Outbound communication to the Internet Enabled (all)
Source MAC filtering
Disabled
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Table A-2. Default Configuration Settings (continued)
Feature
Default Behavior
Internet Connection
WAN MAC address
WAN MTU size
Wireless
Use default hardware address
1500
Wireless communication
SSID name
Enabled
Wireless
Security
WEP (Wired Equivalent Privacy) 128-bit encryption
Broadcast SSID
Transmission speed
Country/region
RF channel
Enabled
Autoa
United States (varies by region)
6
Operating mode
Data rate
g and b
Best
Output power
Full
Access point
Enabled
Authentication type
Wireless card access list
Open System
All wireless stations allowed
a. Maximum Wireless signal rate derived from IEEE Standard 802.11 specifications. Actual throughput will
vary. Network conditions and environmental factors, including volume of network traffic, building
materials and construction, and network overhead, lower actual data throughput rate.
Technical Specifications and Factory Default Settings
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Appendix B
Related Documents
This appendix provides links to reference documents you can use to gain a more complete
understanding of the technologies used in your NETGEAR product.
Document
Link
Using Microsoft Vista and
Windows XP to Manage
Wireless Network Connections
ITCP/IP Networking Basics
Wireless Networking Basics
Preparing Your Network
Virtual Private Networking Basics
Glossary
Related Documents
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B-6
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Index
primary server 1-10
secondary server 1-10
B
blocking
keywords 3-2
services 3-5
E
sites 3-2
C
F
G
configuration
gateway
backup 4-5
backup 4-5
erasing 4-6
diagnostics 4-7
connected wireless devices
crossover cable 5-2
password 4-4
status 4-1
D
default gateway 1-10, 1-12
DHCP 1-9
I
server 5-11
diagnostics 4-7
DNS
L
L2TP
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server 1-11
rules
inbound 3-5
LAN
IP settings 5-10
S
LEDs
secondary DNS server 1-10
security options 2-5, 2-6
description 1-2
troubleshooting 5-2
SSID 2-5
M
Static IP address 1-10
static IP address 1-10, 1-12
static IP mask 1-10, 1-12
MD5 authentication 5-3
T
TCP/IP
O
troubleshooting 5-1
LEDs 5-2
P
passphrase 2-7
password 4-4
U
URL 3-4
USB
cable 1-5
driver 1-7
primary DNS server 1-10
W
R
WEP 2-6
keys 2-8
passphrase 2-7
wireless
Routing Information Protocol (RIP) 5-3
access point 2-5
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