NETGEAR CG3300CMR User Manual

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Wireless Cable Gateway CG3300CMR

User Manual

350 East Plumeria Drive San Jose, CA 95134 USA

September 2012 202-11068-02 v1.0

Wireless Cable Gateway CG3300CMR

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

Tech nic al S upp ort

Thank you for choosing NETGEAR. To register your product, get the latest product updates, or get support online, visit us at http://support.netgear.com.

Phone (US & Canada only): 1-888-NETGEAR Phone (Other Countries): See Support information card.



Trademarks

NETGEAR, the NETGEAR logo, and Connect with Innovation are trademarks and/or registered trademarks of NETGEAR, Inc. and/or its subsidiaries in the United States and/or other countries. Information is subject to change without notice. Other brand and product names are registered trademarks or trademarks of their respective holders. © 2012 NETGEAR, Inc. All rights reserved.

Statement of Conditions

To improve internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice. NETGEAR does not assume any liability that may occur due to the use, or application of, the product(s) or circuit layout(s) described herein.

Contents

Chapter 1 Connect to the Gateway

Chapter 2 genie Basic Settings

Gateway Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Gateway Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Power Supply Manufacturers and Models . . . . . . . . . . . . . . . . . . . . . . . 10

Gateway Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

View the Gateway Home Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Basic Home Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Advanced Home Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Add Wireless Devices or Computers to Your Network. . . . . . . . . . . . . . . . 14

Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Placement of the Router to Optimize Wireless Connectivity . . . . . . . . . 16

Wireless Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Wireless Screen Fields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Attached Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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

Guest Network Wireless Security Options . . . . . . . . . . . . . . . . . . . . . . . 21

Chapter 3 genie Advanced Home

Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Internet Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Internet Setup Screen Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

WAN Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Default DMZ Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Change the MTU Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

LAN Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

LAN Setup Screen Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Use the Gateway as a DHCP Server . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Address Reservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Chapter 4 Security

Keyword Blocking of HTTP Traffic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Block Services (Port Filtering) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Security Event Email Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Wireless Cable Gateway CG3300CMR

Chapter 5 Administration

View Gateway Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Router Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Cable Network Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Guest Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

View Logs of Web Access or Attempted Web Access . . . . . . . . . . . . . . . . 47

View Event Logs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Manage the Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Back Up Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Restore Configuration Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Set Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Chapter 6 Advanced Settings

Advanced Wireless Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Advanced Wireless Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Wireless Card Access List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Nearby Wireless Access Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Port Forwarding and Port Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Remote Computer Access Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Port Triggering to Open Incoming Ports . . . . . . . . . . . . . . . . . . . . . . . . . 60

Port Forwarding to Permit External Host Communications . . . . . . . . . . 61

How Port Forwarding Differs from Port Triggering . . . . . . . . . . . . . . . . . 63

Set Up Port Forwarding to Local Servers. . . . . . . . . . . . . . . . . . . . . . . . . . 63

Add a Custom Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Edite or Delete a Port Forwarding Entry. . . . . . . . . . . . . . . . . . . . . . . . . 65

Set Up Port Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Dynamic DNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Cable Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Universal Plug and Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

IPv6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Chapter 7 Troubleshooting

Basic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Using LEDs to Troubleshoot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Connect to the Main Menu of the Gateway . . . . . . . . . . . . . . . . . . . . . . . . 75

Troubleshoot the ISP Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Troubleshoot a TCP/IP Network Using a Ping Utility . . . . . . . . . . . . . . . . . 76

Test the LAN Path to Your Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Test the Path from Your Computer to a Remote Device . . . . . . . . . . . . 77

Wireless Performance and Gateway Location . . . . . . . . . . . . . . . . . . . . . . 78

Wireless Cable Gateway CG3300CMR

Appendix A Supplemental Information

Factory Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

Appendix B Notification of Compliance Index

1. Connect to the Gateway

Getting to know your gateway

This chapter describes how to configure the Internet connection of your gateway and includes these sections:

• Gateway Front Panel

• Gateway Rear Panel

• Gateway Label

• Log In To Your Gateway

• View the Gateway Home Screens

• Add Wireless Devices or Computers to Your Network

Note: For more information about the topics that are covered in this

manual, visit the support website at support.netgear.com.

Wireless Cable Gateway CG3300CMR

Power

Downstream

Upstream

Internet

LAN (Ethernet)

WPS

Wireless On/Off

Gateway Front Panel

Note: For optimal performance, place the gateway vertically in the stand.

Do not mount this unit to a wall; it is not suitable for wall mounting.

Connect to the Gateway

Wireless Cable Gateway CG3300CMR

You can use the LEDs to verify status and connections. The following table lists and describes each LED and button on the front panel of the gateway.

LED Description

• Green. Pow

• Blin

Power

Downstream

Upstream

Internet

Ethernet)

LAN (

Button Description

• Off. No powe

• Green. More

• Am

• Blin

• Off. No down

• Green. More than one channel is locked (channel bonding).

• Am

• Blin

• Off. No up

• So

• Blin

• Off. The cable modem is offline.

Green indicates 1,000 Mbps. Amber indicates 100/10 Mbps.

• Solid.

• Blin

• Off. No Ethernet device is detected on the Ethernet port.

Pressing this button opens a 2-minute windo WPS-enabled devices.

king. Power-on self-test.

ber. One channel is locked (no channel bonding).

king. The unit is scanning for a downstream channel.

ber. One channel is locked (no channel bonding).

king. The unit is scanning for an upstream channel.

lid green. The cable modem is online.

king. The cable modem is synchronizing with the CMTS of the cable provider.

king. Data is being transmitted or received on the Ethernet port.

er is supplied to the cable modem.

than one channel is locked (channel bonding).

stream channel is locked.

An Ethernet device is connected and powered on.

w for the gateway to connect with other

WPS

Wireless On/Off

Note: W

Turn the wireless radio in the gateway on and of LED located below this button indicates if the wireless radio is on or off.

Note: W

PS has been disabled.

f. The wireless radio is on by default. The

ireless On/Off button has been disabled.

Connect to the Gateway

Wireless Cable Gateway CG3300CMR

Power

Ethernet LAN ports

Coaxial

adapter

input

cable

connector

Power On/Off

button

Restore Factory

Settings

button

Gateway Rear Panel

The rear panel includes the following connections when viewed from top to bottom:

wo Gigabit Ethernet LAN ports. Use these ports to connect local computers.

• T

• Res

tore Factory Settings button. You can return the gateway to its factory settings.

Press and hold the Restore Factory Settings button for over 7 seconds. The gateway resets and returns to its factory settings. See Factory Default Settings on p

• Coax

ial cable connector. Attach a coaxial cable to the cable service provider connection.

• Power adapter input. Conne

• Power On/Off button. Press to

ct the power adapter unit here.

turn on power. Press again to turn off power.

Connect to the Gateway

age 79.

Wireless Cable Gateway CG3300CMR

MAC address Serial number

Preset WiFi password

Default access information

Preset SSID

Security PIN

Power Supply Manufacturers and Models

Note: Use only power supplies listed in the User Manual.

• Adaptor of CWT

Manufacturer: Channel Well Technology Co Ltd Model: SAL018F2

• Adapto

r of PI Manufacturer: PI Electronics (H.K.) Ltd. Model: AD817000

Gateway Label

The label on the bottom of the gateway shows the WPS PIN, login information, MAC address, and serial number.

Connect to the Gateway

Wireless Cable Gateway CG3300CMR

You can log in to the gateway to view or change its settings.

Note: To connect to the gateway, use a computer that is configured for

DHCP (most computers are). For help with configuring DHCP, see the instructions that came with your computer.

The gateway automatically logs you out after 5 minutes of no activity.

 To log in to the gateway:

1. On the

computer that is connected to the gateway with an Ethernet cable, type

http://192.168.1.1 in the address field of your Internet browser. A login window opens.

2. Log in with the user name admin and its default password of password.

The gateway Basic Home screen displays when you log in (see Basic Home Screen on page 12).

Connect to the Gateway

Wireless Cable Gateway CG3300CMR

Language

Menus (Click the Advanced tab to view more)

Dashboard (Click to view details)

View the Gateway Home Screens

The gateway home screens include a Basic Home screen and an Advanced Home screen.

Basic Home Screen

When you connect to the gateway, the gateway dashboard (Basic Home screen) displays.

The gateway Basic Home screen has a dashboard that lets you see the status of your Internet connection and network at a glance. You can click any of the sections of the dashboard to view more detailed information. The left column has the menus, and at the top there is an Advanced tab that is used to access additional menus and screens.

• Home. Th

Home tab.

• W

ireless. View or change the wireless settings for your gateway.

• Att

ached Devices. View the devices that are connected to your network.

is dashboard screen displays when you log in to the gateway or select the

Connect to the Gateway

Wireless Cable Gateway CG3300CMR

• Guest Network. Set up a guest network to allow visitors to use the Internet connection of

your gateway.

• Adv

anced tab. Set the gateway up for unique situations such as when remote access by

IP or by domain name from the Internet is needed. See Advanced Home Screen on page 13. Using this tab requires a solid understanding of networking concepts.

For more information about the Basic settings, see Chapter 2, genie Basic Settings.

Advanced Home Screen

Note: Using the Advanced Home screen requires a solid understanding of

networking concepts.

To view the Advance Home screen, select the Advanced tab from the top menu.

The gateway Advanced Home screen has a dashboard that lets you see the configuration of your gateway and network at a glance. You can click any of the sections of the dashboard to view more detailed information. The left column has the menus, and at the top there is a Basic tab that is used to the basic menus and screens.

• Adv

anced Home. This dashboard screen displays when you select the Advanced tab.

Connect to the Gateway

Wireless Cable Gateway CG3300CMR

• Setup. Set up the Internet connection, wireless, guest network, WAN, and LAN.

• Security. Block sites, block services, and set up email notifications.

• Administration. View router status, logs, and event logs, back up and restore the

configuration file, and change the gateway password.

• Advanced Setup. Configure advanced network features such as port forwarding, port

triggering, Dynamic DNS, UPnP, and IPv6.

• Home tab. Return to the Basic Home screen. See Basic Home Screen on page 12.

For more information about the Advanced settings, see Chapter 3, genie Advanced Home.

Add Wireless Devices or Computers to Your Network

See Guest Networks on page 20 for instructions on how to set up a guest network.

 To add wireless devices or computers to your network:

1. Open the software that manages your wireless connections on the wireless device

(laptop computer, gaming device, iPhone) that you want to connect to your gateway. This software scans for all wireless networks in your area.

2. Look for your network and select it. If you did not change the name of your network during

the setup process, look for the default WiFi network name (SSID) and select it. The default SSID is on the product label on the bottom of the gateway.

3. Enter the gateway password and click Connect. The default gateway passphrase is on the

product label on the bottom of the gateway.

4. Repeat steps 1–3 to add other wireless devices.

Connect to the Gateway

2. genie Basic Settings

Your Internet connection and network

This chapter explains the features available from the genie Basic Home screen that is shown in the following figure:

This chapter contains the following sections:

• Wireless

• Attached Devices

• Guest Networks

Wireless Cable Gateway CG3300CMR

Wireless

Note: To ensure proper agency compliance and compatibility between

similar products in your area, set the operating channel and region correctly.

Placement of the Router to Optimize Wireless Connectivity

The operating distance or range of your wireless connection can vary based on the physical placement of the router. For best results, place your router:

• Near the center of the area in which your computers operate.

• In an elevated location such as a high shelf.

• Away from potential sources of interference, such as computers, microwave ovens, and

cordless phones.

• Away from large metal surfaces.

Note: Failure to follow these guidelines can result in significant

performance degradation or inability to connect wirelessly to the gateway.

Wireless Screen

The Wireless screen lets you view or configure the wireless network setup.

The wireless cable gateway comes with preset security. This feature means that the WiFi network name (SSID), network key (password), and security option (encryption protocol) are preset in the factory. You can find the preset SSID and password on the bottom of the unit.

Note: The preset SSID and password are uniquely generated for every

device to protect and maximize your wireless security.

NETGEAR recommends that you do not change your preset security settings. If you do decide to change your preset security settings, make a note of the new settings and store it in a safe place.

If you use a wireless computer to change the wireless network name (SSID) or other wireless security settings, you are disconnected when you click Apply. To avoid this problem, use a computer with a wired connection to access the gateway.

genie Basic Settings

Wireless Cable Gateway CG3300CMR

 To view or change basic wireless settings:

1. On the Basic Home screen, select Wireless to display the Wireless screen.

The screen sections, settings, and procedures are

2. Chan

3. Set up and

ge what you need to, and click Apply to save your settings.

test your wireless devices and computers to make sure that they can connect

wirelessly. If they do not, check the following:

s your wireless device or computer connected to your network or another wireless

• I

network in your area? Some wireless devices automatically connect to the first open network (without wireless security) that they discover.

• Doe

s your wireless device or computer show up on the Attached Devices screen? If it

does, then it is connected to the network.

• I

f you are not sure what the network name (SSID) or password is, look on the label on

the bottom of your gateway.

genie Basic Settings

explained in the following sections.

Wireless Cable Gateway CG3300CMR

CAUTION:

Wireless Screen Fields

Wireless Network

• Enable SSID Broadcast. This setting allows the gateway to broadcast its SSID so

wireless stations can see this wireless name (SSID) in their scanned network lists. This check box is selected by default. To turn off the SSID broadcast, clear the Enable SSID

Broadcast check box, and click Apply.

• Enable W

or wireless devices) that join the network can use the Internet. They cannot access each other or access Ethernet devices on the network, however.

• Name (SSID). The

32-character (maximum) name in this field. This field is case-sensitive. The default SSID is randomly generated, and NETGEAR strongly recommends that you do not change the SSID.

• Region. T

ireless Isolation. If this check box is selected, then wireless clients (computers

SSID is also known as the wireless network name. Enter a

he location where the gateway is used.

• Channel.

from 1 through 13. (For products in the North America market, only Channels 1 through 11 can be operated.) Do not change the channel unless you experience interference (such as lost connections or slow data transfers). If any interference happens, experiment with different channels to see which is the best.

• Mod

join the network. g & b supports up to 54 Mbps. The 300 Mbps setting allows 802.11n devices to connect at this speed.

This setting is the wireless channel that the gateway uses. Choose a value

e. Up to 145 Mbps is the default and allows 802.11n and 802.11g wireless devices to

Security Options Settings

The Security Options section of the Wireless screen lets you change the security option and passphrase. NETGEAR recommends that you do not change the security option or passphrase, but if you want to change these settings, this section explains how.

Do not disable security.

 To change the WPA security option and passphrase:

1. Under Security Options, select th

e WPA option that you want.

2. In the Passphrase field that displays when you select a WPA security option, enter the

network key (passphrase) that you want to use. It is a text string from 8 to 63 characters.

genie Basic Settings

Wireless Cable Gateway CG3300CMR

Attached Devices

You can view all computers or devices that are currently connected to your network here. From the Basic Home screen, select Attached Devices to display the following screen:

Wired devices are connected to the gateway with Ethernet cables. Wireless devices have joined the wireless network.

• IP

Address. The IP address that the gateway assigned to this device when it joined the

network. This number can change when a device disconnects and then rejoins the network.

• Device Name. If the

You can click Re

fresh to update this screen.

device name is known, it is shown here.

genie Basic Settings

Wireless Cable Gateway CG3300CMR

Guest Networks

You can add a guest network to allow visitors at your home to use the Internet without providing them with your wireless security key.

 To set up a guest network:

1. Select Basic > Guest Network to displa

y the following screen:

2. Select any of the following wireless se

Enable Guest Network. W

and guests can connect to your network using the SSID of this profile. Enable SSID Broadcast. If th

broadcasts its name (SSID) to all wireless stations. Stations with no SSID can adopt the correct SSID for connections to this access point.

• Enable W

ireless Isolation. If this check box is selected, then wireless clients (computers

or wireless devices) that join the network can use the Internet. They cannot access each other or access Ethernet devices on the network, however.

3. Give the guest net

work a name.

ttings:

hen this check box is selected, the guest network is enabled,

is check box is selected, the wireless access point

genie Basic Settings

Wireless Cable Gateway CG3300CMR

The guest network name is case-sensitive and can be up to 32 characters. You then manually configure the wireless devices in your network to use the guest network name in addition to the main nonguest SSID.

4. Select the guest network group from the list.

5. Select a security option from the list. The security options are described in Guest Network

Wireless Security Options on page 21.

6. Click Apply to save your selections.

Guest Network Wireless Security Options

A security option is the type of security protocol that is applied to your wireless network. The security protocol in force encrypts data transmissions and ensures that only trusted devices receive authorization to connect to your network.

This section presents an overview of the security options and provides guidance on when to use which option. It is also possible to set up a guest network without wireless security. NETGEAR does not recommend not using wireless security.

Wi-Fi Protected Access (WPA) encryption is built into all hardware that has the Wi-Fi-certified seal. This seal means that the product complies with the worldwide single standard for high-speed wireless local area networking that the Wi-Fi Alliance (http://www.wi-fi.org/) established.

WPA-PSK uses a passphrase to perform authentication and generate the initial data encryption keys. Then it dynamically varies the encryption key. WPA-PSK uses Temporal Key Integrity Protocol (TKIP) data encryption and implements most of the IEEE 802.11i standard. It is designed to work with all wireless network interface cards. Not all wireless access points work with this standard. WPA2-PSK supersedes WPA-PSK.

WPA2-PSK is stronger than WPA. It is advertised to be theoretically indecipherable due to the greater degree of randomness in encryption keys that it generates. WPA2-PSK gets higher speed because it is implemented through hardware, while WPA-PSK is implemented through software. WPA2-PSK uses a passphrase to authenticate and generate the initial data encryption keys. Then it dynamically varies the encryption key.

WPA-PSK + WPA2-PSK Mixed Mode can provide broader support for all wireless clients. WPA2-PSK clients get higher speed and security, and WPA-PSK clients get decent speed and security. The product documentation for your wireless adapter and WPA client software has instructions about configuring their WPA settings.

genie Basic Settings

3. genie Advanced Home

Specifying custom settings

This chapter explains the features available from the genie Advanced Home screen that is shown in the following figure:

This chapter contains the following sections:

• Setup Menu

• WAN Setup

• LAN Setup

Some selections on the Advanced Home screen

• Se

curity. See Chapter 4, Security.

are described in separate chapters:

Wireless Cable Gateway CG3300CMR

• Administration. See Chapter 5, Administration.

• Advanced Setup. See Chapter 6, Advanced Settings.

Setup Menu

Select Advanced > Setup to display the Setup menu. The following selections are available:

• Internet Setup. See Internet Setup on page 24.

• Wireless Setup. This menu item is a shortcut to the same Wireless screen that you can

access from the dashboard on the Basic Home screen. See

• Guest Network. This menu item is a shortcut to the same Guest Network screen that you

can access from the dashboard on the Basic Home screen. See page 20.

• WAN Setup. Internet wide area network (WAN) setup. See WAN Setup on page 26.

• LAN Setup. Local area network (LAN) setup. See LAN Setup on page 28.

Wireless on page 16.

Guest Networks on

genie Advanced Home

Wireless Cable Gateway CG3300CMR

Internet Setup

The Internet Setup screen is where you view or change ISP information.

 To change the Internet settings:

1. From the Adva

displays:

nced Home screen, select Setup > Internet. The following screen

2. Enter the settings for the IP address and DNS server. The default settings usually work fine.

If you have problems with your connection, check the ISP settings.

3. Click Apply to save

your settings.

Internet Setup Screen Fields

The following descriptions explain all of the possible fields in the Internet Setup screen.

Internet IP Address.

• If you lo

router finds an IP address for you automatically when you connect. Select Get Dynamically from ISP.

g in to your service or your ISP did not provide you with a fixed IP address, the

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• If you have a fixed (or static) IP address, your ISP has provided you with the required

information. Select Use Stat ic IP Address and type the IP address, IP subnet mask, and gateway IP address in the correct fields.

For example:

- IP Address. 24.218.156.183

- Subnet Mask. 255.255.255.0

- Gateway IP Address. 24.218.156.1

Domain Name Server (DNS) Address. The DNS server is used to look up site addresses

that are based on their names.

• If your ISP gave you one or two DNS addresses, select Use These DNS Servers and

type the primary and secondary addresses.

• Otherwise, select Get Automatically from ISP.

Note: If you get address not found errors when you go to a website, it is

likely that your DNS servers are not set up correctly. Contact your ISP to get the DNS server addresses.

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WAN Setup

The WAN Setup screen lets you configure a DMZ (demilitarized zone) server, change the maximum transmit unit (MTU) size, and enable the gateway to respond to a ping on the WAN (Internet) port.

 To change the WAN settings:

Select Advanc

ed > Setup > WAN Setup to view the following screen:

• Default DMZ Server. This feature is sometimes helpful when you are playing online

games or videoconferencing. Be careful when using this feature because it makes the firewall security less effective. See Default DMZ Server on

• Respond

to Ping on Internet Port. If you want the gateway to respond to a ping from

the Internet, select this check box. Use this feature only as a diagnostic tool because it also allows your gateway to be discovered. Do not select this check box unless you have a specific reason.

• MTU Size (in by

tes). The normal MTU (maximum transmit unit) value for most Ethernet

networks is 1500 bytes, or 1492 bytes for PPPoE connections. For some ISPs, reduce the MTU. Reducing the MTU size is rarely required, and you should not do this unless you are sure that it is necessary for your ISP connection. See Change the MTU Size on page 27.

page 27 for more details.

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WARNING:

Default DMZ Server

The default DMZ server feature is helpful when you are using some online games and videoconferencing applications that are incompatible with Network Address Translation (NAT). The gateway is programmed to recognize some of these applications and to work correctly with them, but there are other applications that do not function well. In some cases, one local computer can run the application correctly if the IP address of that computer is entered as the default DMZ server.

DMZ servers pose a security risk. A computer that is designated as the default DMZ server loses much of the protection of the firewall and is exposed to exploits from the Internet. If compromised, the DMZ server computer can be used to attack other computers on your network.

The gateway discards incoming traffic from the Internet unless the traffic is a response to one of your local computers or a service that you have configured in the Port Forwarding/Port Triggering screen. Instead of discarding this traffic, you can have it forwarded to one computer on your network. This computer is called the default DMZ server.

 To set up a default DMZ server:

1. On the WAN Setup screen, select the Default DMZ Server check box.

2. Type the IP address.

3. Click Apply.

Change the MTU Size

The maximum transmission unit (MTU) is the largest data packet a network device transmits. When one network device communicates across the Internet with another, the data packets travel through many devices along the way. If any device in the data path has a lower MTU setting than the other devices, the data packets are split (or “fragmented”) to accommodate the device that has the smallest MTU.

The best MTU setting for NETGEAR equipment is often the default value, and changing the value often fixes one problem but causes another. Leave MTU size unchanged unless one of these situations occurs:

• You have problems connecting to your ISP or other Internet service, and the technical

support of either the ISP or NETGEAR recommends changing the MTU setting. These web-based applications often require an MTU change:

- A secure website that does not open, or displays only part of a web page

- Yahoo email

- MSN portal

- America Online DSL service

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• You use VPN and have severe performance problems.

• Y

ou used a program to optimize MTU for performance reasons, and now you have

connectivity or performance problems.

Note: An incorrect MTU setting causes Internet communication problems.

These problems include the inability to access certain websites, frames within websites, secure login pages, or FTP or POP servers.

If you suspect an MTU problem, a common solution is to change the MTU to 1400. If you are willing to experiment, you can gradually reduce the MTU from the maximum value of 1500 until the problem goes away. The following table describes common MTU sizes and applications.

Table 1. Common MTU sizes

MTU Application

1500 The largest Ethernet packet size and the default value. This size is the typical setting for

non-PPPoE, non-VPN connections, and is the default value for NETGEAR gateways, adapters, and switches.

1492 Used in PPPoE environments.

1472 Maximum size to use for pinging. (Larger packets are fragmented.)

1468 Used in some DHCP environments.

1460 Usable by AOL if you do not have large emai

1436 Used in PPTP environments or with VPN.

1400 Maximum size for AOL DSL.

576 Typical value to connect to dial up ISPs.

 To change the MTU size:

1. Select Advance

the MTU Size field, enter a new size from 64 through 1500.

2. In

3. Click Apply to save

d > Setup > WAN Setup.

the settings.

l attachments, for example.

LAN Setup

The LAN Setup screen allows you to configure LAN services such as the IP address of the gateway and DHCP. The TCP/IP and DHCP default values work fine in most cases.

The gateway is shipped preconfigured to use private as a DHCP server. The default LAN IP configuration of the gateway is:

IP addresses on the LAN side and to act

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• LAN IP address. 192.168.1.1

• Sub

These addresses are part of the designated priva

net mask. 255.255.255.0

te address range for use in private networks and are suitable for most applications. If your network requires you to use a different IP addressing scheme, make those required changes in the LAN Setup screen.

 To change the LAN settings:

Note: If you change the LAN IP address of the gateway while connected

through the browser, you are disconnected. Open a new connection to the new IP address and log in again.

1. Select Advanced > Setup > LAN Setup to display the following screen:

2. Enter the settings that you want to customize. These settings are described in the following

section, LAN Setup Screen Settings.

3. Click App

ly to save your changes.

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LAN Setup Screen Settings

LAN TCP/IP Setup

• IP Address. The LAN IP address of the gateway.

• IP Subnet Mask. The LAN subnet mask of the gateway. When combined with the IP

address, the IP subnet mask allows a device to know the following:

- Which other addresses are local to it

- Which other addresses have to be reached through a gateway

Use Router as a DHCP Server

This check box is selected so that the gateway functions as a Dynamic Host Configuration Protocol (DHCP) server.

• Starting IP Address. Specify the start of the range for the pool of IP addresses in the

same subnet as the gateway.

• Ending IP Address. Specify the end of the range for the pool of IP addresses in the

same subnet as the gateway.

Address Reservation

When you specify a reserved IP address for a computer on the LAN, that computer receives the same IP address each time it accesses the DHCP server of the gateway. Assign reserved IP addresses to servers that require permanent IP settings.

Use the Gateway as a DHCP Server

By default, the gateway functions as a DHCP server. This capability allows the gateway to assign IP, DNS server, and default gateway addresses to all computers connected to the LAN that is connected to the gateway. The assigned default gateway address is the LAN address of the gateway. The gateway assigns IP addresses to the attached computers from a pool of addresses that are specified in this screen. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN. For most applications, the default DHCP and TCP/IP settings of the gateway are satisfactory.

You can specify the pool of IP addresses that can be assigned by setting the starting IP address and ending IP address. These addresses are part of the same IP address subnet as the LAN that is connected to the gateway. Using the default addressing scheme, you define a range between 192.168.1.2 and 192.168.1.254. You can save part of the range for devices with fixed addresses.

The gateway delivers the following parameters to any LAN device that requests DHCP:

• An IP address from the range you have defined

• Subnet mask

• Gateway IP address (the LAN IP address of the gateway)

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• Primary DNS server (if you entered a primary DNS address in the Internet Setup screen;

otherwise, the LAN IP address of the gateway)

• Second

ary DNS server (if you entered a secondary DNS address in the Internet Setup

screen)

To use another device on your network as the DHCP serve

r or to configure manually the

network settings of all of your computers, clear the Use Router as DHCP Server check box and click Apply. Otherwise, leave this check box selected. If this service is not enabled and no other DHCP server is available on your network, set the IP addresses of your computer manually or other devices cannot access the gateway.

Address Reservation

When you specify a reserved IP address for a computer on the LAN, that computer always receives the same IP address each time it accesses the DHCP server of the gateway. Assign reserved IP addresses to computers or servers that require permanent IP settings.

 To reserve an IP address:

n the Address Reservation section of the LAN Setup screen, click the Add button.

1. I

2. In the IP Address field, type the IP address to assign to the computer or server. (Choose an

IP address from the LAN subnet of the gateway, such as 192.168.1.x.)

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3. Type the MAC address of the computer or server.

Tip: If the computer is already on your network, copy its MAC address from

the Attached Devices screen and paste it here.

4. Click Apply to enter the reserved address into the table.

The reserved address is not assigned until the next time the computer contacts the DHCP server of the gateway. Reboot the computer or access its IP configuration and force a DHCP release and renew.

To edit or delete a reserved address entry, select the radio button next to the reserved address you want to edit or delete. Then click Edit or Delete.

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4. Security

Keeping unwanted content out of your network

This chapter explains how to prevent objectionable content from reaching the computers and other devices that are connected to your network.

This chapter includes the following sections:

• Keyword Blocking of HTTP Traffic

• Block Services (Port Filtering)

• Security Event Email Notifications

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Keyword Blocking of HTTP Traffic

Use keyword blocking to prevent certain types of HTTP traffic from accessing your network.

1. Select Advance

d > Security > Block Sites to display the following screen:

2. Select one of the keyword blocking options:

• Never.

• Always. T

3. In

the keyword field, enter a keyword or domain, click Add URL Keyword, and click Apply.

Turn off keyword blocking.

urn on keyword blocking.

The keyword list supports up to 32 entries. Here are some sample entries:

pecify XXX to block http://www.badstuff.com/xxx.html.

• S

pecify .com if you want to allow only sites with domain suffixes such as .edu or .gov.

• Enter a

 To delete a keyword or domain:

1. Select the keyword

2. Click Delete UR

period (.) to block all Internet browsing access.

that you want to delete from the list.

L Keyword, and then Apply to save your changes.

Security

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 To specify a trusted computer:

You can exempt one trusted computer from blocking and logging. The computer that you exempt has to have a fixed IP address.

1. Select Allow trusted IP address to visit blocked sites.

2. In the Trusted IP Address field, enter the IP address.

3. Click Apply to save your changes.

Block Services (Port Filtering)

Server computers perform services at the request of client computers. For example, web servers serve web pages, time servers serve time and date information, and game hosts serve data about other players’ moves. When a computer on the Internet sends a request for service to a server computer, a service or port number identifies the requested service. This number appears as the destination port number in the transmitted IP packets. For example, a packet that is sent with the destination port number 80 is an HTTP (web server) request.

The service numbers for many common protocols are defined by the Internet Engineering Task Force (IETF at

http://www.ietf.org/) and published in RFC1700, “Assigned Numbers.”

Service numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of the application. Although the gateway already holds a list of many service port numbers, you are not limited to these choices. You can often determine port number information by contacting the publisher of the application, by asking user groups or newsgroups, or by searching.

The Block Services screen lets you add and block specific Internet services by computers on your network. This capability is called service blocking or port filtering. To add a service for blocking, first determine which port number or range of numbers the application uses.

Security

Wireless Cable Gateway CG3300CMR

 To block services:

1. Select Advanced > Security > Block Services to display the following screen:

2. Select one of the service blocking options:

• Never.

• Always. T

Turn off service blocking.

urn on service blocking.

Security

Wireless Cable Gateway CG3300CMR

3. Click Add to add a service. The Block Services Setup screen displays:

4. From the Service Type list, select the application or service to allow or block. The list already

displays several common services, but you are not limited to these choices. To add any additional services or applications that do not already appear, select User Defined.

5. For User Define

d, select the protocol, and enter the name and the range of port numbers of

the service. For known services, these fields are filled in automatically. If you know that the application uses either TCP or UDP, select the appropriate protocol.

f you are not sure, select TCP/UDP.

6. Ente

r the starting and ending port numbers. If the application uses a single port number,

enter that number in both fields.

7. Ente

8. Click Add to

r the IP address of the computer that you want to block.

enable your Block Services Setup selections.

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Wireless Cable Gateway CG3300CMR

Security Event Email Notifications

To receive logs and alerts by email, provide your email information in the E-mail screen and specify which alerts you want to receive and how often.

 To set up email notifications:

1. Select Advance

d > Security > E-mail to display the following screen:

2. To receive email logs and alerts from the gateway, select the Turn E-mail Notification On

check box.

the Your Outgoing Mail Server field, enter the name of the outgoing (SMTP) mail server of

3. In

your ISP (such as mail.myISP.com). You can find this information in the configuration screen of your email program. When this field is blank, log and alert messages are not sent.

4. Enter t

he email address to which logs and alerts are sent in the Send to This E-mail Address field. This email address is also used as the From address. When this field is blank, log and alert messages are not sent.

5. If

your outgoing email server requires authentication, select the My Mail Server requires

authentication check box. Fill in the User Name and Password fields for the outgoing email

server.

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After the log is sent, the log is cleared from the memory of the gateway. If the gateway cannot email the log file, the log buffer fills up. In this case, the gateway overwrites the log and discards its contents.

Click Apply to save your settings.

Security

5. Administration

Managing your network

This chapter describes the gateway settings for administering and maintaining your gateway and home network.

This chapter includes the following sections:

• View Gateway Status

• View Logs of Web Access or Attempted Web Access

• View Event Logs

• Manage the Configuration File

• Set Password

Wireless Cable Gateway CG3300CMR

View Gateway Status

 To view gateway status and usage information:

Select Ad screen:

vanced Home, or select Administration > Router Status to display the following

For a description of the Attached Devices menu item, see Attached Devices on p

age 19.

Administration

Router Information

Wireless Cable Gateway CG3300CMR

The following settings are displayed:

Hardware Version. The Firmware Version. T

gateway model.

he version of the gateway firmware. It changes if you upgrade the

gateway firmware.

GUI Language Version. Th System Up Time. The length

e localized language of the user interface.

of time that the system has been operating.

LAN Port.

• MAC Address.

The Media Access Control address. This address is the unique physical

address that the Ethernet (LAN) port of the gateway uses.

• IP Address. T

he IP address that the Ethernet (LAN) port of the gateway uses. The

default is 192.168.1.1.

• DH

CP Server. Identifies whether the built-in DHCP server of the gateway is active for the

LAN-attached devices.

Click the Reboot b

utton to reboot the gateway.

Administration

Wireless Cable Gateway CG3300CMR

Cable Network Information

The following settings are displayed: WAN IP Address. The

IP address that the Internet (WAN) port of the gateway uses. If no

address is shown or the address is 0.0.0.0, the gateway cannot connect to the Internet.

Duration. The t Expires. Exp WAN Subnet Mask. The

ime that the unit has been up so far.

iration time for the WAN DHCP lease.

IP subnet mask that the Internet (WAN) port of the gateway uses.

WAN Default Gateway. WAN Primary DNS. The

primary Domain Name Server address that the gateway uses. A Domain Name Server translates human-language URLs such as www.netgear.com into IP addresses.

WAN Secondary DNS. The seco

ndary Domain Name Server address that the gateway

uses.

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Cable Connection Status

 To view the cable connection status:

Click the S

tatus button to see the Cable Connection screen.

Use the Cable Connection screen to track the initialization procedure of the gateway, and to get details about the downstream and upstream cable channel. The time is displayed after the gateway is initialized.

The gateway automatically goes through the followin

• Scan

s and locks the downstream frequency, and then links back in the upstream

direction.

• Ob

tains an IP address for the gateway itself. Then the gateway assigns an IP address for

the connected computer.

• Connect

s to the Internet.

g steps in the provisioning process:

Administration

Wireless Cable Gateway CG3300CMR

Wireless Settings

The following settings are displayed:

Name (SSID). The wireless ne Region. The

geographic region where the gateway is being used. It is illegal to use the

twork name (SSID) that the gateway uses.

wireless features of the gateway in some parts of the world. Channel. Id

entifies the operating channel of the wireless port being used. The default channel is Auto. When Auto is selected, the gateway finds the best operating channel available. If you notice interference from nearby devices, you can select a different channel. Channels 1, 6, and 11 do not interfere with each other.

Mode.

Indicates the wireless communication mode: Up to 54 Mbps, Up to 145 Mbps

(default), and Up to 300 Mbps. Wireless AP.

Indicates whether the radio feature of the gateway is enabled. If this feature is

not enabled, the Wireless LED on the front panel is off.

Broadcast Name. Indicates whethe Wireless Isolation. In

dicates that the wireless clients can connect to the Internet. However,

r the gateway is broadcasting its SSID.

they cannot access each other or access Ethernet devices on the network. Wi-Fi Protected Setup. Indicates whethe

r Wi-Fi Protected Setup is configured for this

network.

Administration

Guest Network

Wireless Cable Gateway CG3300CMR

The following settings are displayed: Name (SSID). The

11N wireless network name (SSID) that the gateway uses. The default

name is NETGEAR_Guest_0. Wireless AP. Indicate

s whether the radio feature of the gateway is enabled. If this feature is

not enabled, the Wireless LEDs on the front panel are off.

Broadcast Name. Ind Wireless Isolation.

icates whether the gateway is broadcasting its SSID.

Indicates that the wireless clients can connect to the Internet. However,

they cannot access each other or access Ethernet devices on the network.

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View Logs of Web Access or Attempted Web Access

The log is a detailed record of the websites you have accessed or attempted to access. Up to 256 entries are stored in the log. Log entries appear only when keyword blocking is enabled

nd no log entries are made for the trusted LAN client.

 To view the logs:

Select Ad

vanced > Administration > Logs. The Logs screen displays.

The log screen shows the following information:

• Date

• Sou

• T

and time. The date and time the log entry was recorded.

rce IP. The IP address of the initiating device for this log entry.

arget address. The name or IP address of the website or news group visited or to which

access was attempted.

• Action. Whet

• Known DoS

her the access was blocked or allowed.

attacks and Port Scans. Clear this check box to ignore known DoS attacks

and port scans.

To refresh the log screen, click the Refresh button. To clear the log entries, click the Clear Lo

g button.

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To email the log immediately, click the Send Log button. To save your changes, click the App

ly button.

View Event Logs

Event logs capture important gateway events.

 To view the event logs:

Select Advanc

ed > Administration > Event Logs. The Event Logs screen displays.

The log screen shows the following information:

me. The time the event log entry was recorded.

• Ti

• Priority. T

he severity for this event log entry.

• Description. A descript

To refresh the log screen, click the Re To clear the log entries, click the Cle

ion of this event log entry.

fresh button.

ar Log button.

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Manage the Configuration File

The configuration settings of the wireless cable gateway are stored within the gateway in a configuration file. You can back up (save) this file to your computer, restore it, or reset it to the factory default settings.

Back Up Settings

 To back up the configuration settings of the gateway:

1. Select Ad

vanced > Administration > Backup Settings to display the following screen:

2. Click Back Up to save a copy of the current settings.

3. Choo

se a location to store the .cfg file that is on a computer on your network.

Restore Configuration Settings

 To restore configuration settings that you backed up:

1. Ent

er the full path to the file on your network, or click the Browse button to find the file.

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Wireless Cable Gateway CG3300CMR

WARNING:

2. When you have located the .cfg file, click the Restore button to upload the file to the

gateway.

Upon completion, the gateway reboots.

Do not interrupt the reboot process.

Erase

Under some circumstances (for example, if you move the gateway to a different network or if you have forgotten the password), you want to erase the configuration and restore the factory default settings.

Either press the Restore Factory Settings button on the back of the gateway (see Factory

Default Settings on page 79) or click the Erase button in this screen.

Erase sets the user name to admin, the password to password, and the LAN IP address to

192.168.1.1, and enables the DHCP of the gateway.

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Set Password

This feature allows you to change the default password that is used to log in to the gateway with the user name admin.

This gateway password is not the same as the

password for wireless access. The label on

the bottom of your gateway shows your unique wireless network name (SSID) and password for wireless access (see Gateway Label on p

 To set the password for the user name admin:

1. Select Adv

anced > Administration > Set Password to display the following screen:

age 10).

2. Type the old password, and type the new password twice in the fields on this screen.

3. Click App

ly so that your changes take effect.

Administration

6. Advanced Settings

Fine-tuning your network

This chapter describes the advanced features of your gateway. The information requires a solid understanding of networking concepts and is for people who want to set up the gateway for unique situations such as when remote access from the Internet by IP or domain name is needed.

This chapter includes the following sections:

• Advanced Wireless Settings

• Services

• Port Forwarding and Port Triggering

• Set Up Port Forwarding to Local Servers

• Set Up Port Triggering

• Dynamic DNS

• Cable Status

• Universal Plug and Play

• IPv6

• NAT

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Advanced Wireless Settings

 To view the advanced wireless settings:

Select Ad following screen:

vanced > Advanced Setup > Advanced Wireless Settings to display the

Advanced Wireless Settings

The following settings are available on this part of the screen:

• Ena

ble Wireless Router Radio. You can completely turn off the wireless portion of the

wireless gateway by clearing this check box. Select this check box again to enable the wireless portion of the gateway. When the wireless radio is disabled, other members of your household can use the gateway by connecting their computers to the gateway with an Ethernet cable.

ble Wireless Isolation. If this check box is selected, then wireless clients (computers

or wireless devices) that join the network can use the Internet. They cannot, however, access each other or access Ethernet devices on the network.

ble SSID Broadcast. The setting enables broadcast of the SSID.

Advanced Settings

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• Enable WMM (Wi-Fi multimedia) settings. WMM (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 or audio, has a higher priority than normal traffic. For WMM to function properly, wireless clients have to support WMM also.

Note: The Fragmentation Length, CTS/RTS Threshold, and Preamble

Mode options are reserved for wireless testing and advanced configuration only. Do not change these settings.

• Transmit Power Control. With the default setting of 100%, the gateway uses the power

level that NETGEAR recommends for transmitting wireless packets. If you change this setting to a lower percentage, it saves power, but also reduces wireless coverage.

Advanced Settings

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Wireless Card Access List

By default, any wireless computer or device that is configured with the correct SSID is allowed access to your wireless network. For increased security, allow only specific wireless computers and devices to access the wireless network based on their MAC addresses.

 To enable wireless card access:

1. Click the Set Up Access

List button display the Wireless Card Access List screen.

On this screen, you can restrict access to your network to specific devices based on their MAC address.

2. Select th

e Turn Access Control On check box to enable the restricting of wireless

computers and devices by their MAC addresses.

Note: If Turn Access Control On is enabled and the Access Control List is

blank, then all wireless computers and devices are unable to connect to your wireless network.

3. For information about how to add wireless computers and devices to the Access Control

List, see Wireless Client Access List Setup on p

age 56.

Advanced Settings

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4. Click the Apply button to save changes and return to the Advanced Wireless Settings

screen.

Wireless Client Access List Setup

 To set up the access control list:

1. Click the

Add button on the Wireless Card Access List screen to display the Wireless

Card Access Setup screen.

This screen displays a list of currently active wireless computers and devices and their Ethernet MAC addresses.

2. If

the wireless computer or device you want appears in the list, click its radio button to capture its MAC address. Otherwise, manually enter the MAC address of the authorized wireless computer or device. The MAC address is found on the computer or device.

3. If

no device name appears, type a descriptive name for the computer or device that you are adding.

4. Wh

en finished entering the MAC address, return to the Wireless Access List screen by

clicking the Add button.

5. Repeat

steps 1 through 4 for each wireless computer or device.

Advanced Settings

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6. When finished adding wireless computers and devices to this list, on the Wireless Card

Access Setup screen, select the Turn Access Control On check box to enable access control.

7. On the Wireless

Card Access Setup screen, click Apply to save changes and return to the

Advanced Wireless Settings screen.

Nearby Wireless Access Points

Click the Scan With AP button to find access points that are near the CG3300CMR. The Nearby Wireless Access Points screen displays.

Advanced Settings

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Services

 To view the advanced wireless settings:

Select Advanc

ed > Advanced Setup > Services to display the following screen:

Use the Services screen to disable certain gateway features. To disable a feature, clear the check box.

• When

Firewall Features are enabled, the gateway performs stateful packet inspection

(SPI) and protects against denial of service (DoS) attacks.

• When

IPSec Pass-Through is enabled, IPSec traffic is forwarded. When it is disabled, this

traffic is blocked.

• When

PPTP Pass-Through is enabled, PPTP traffic is forwarded. When it is disabled, this

traffic is blocked.

• When

Multicast is enabled, the cable gateway passes multicasting streams through the

firewall.

• When

Port Scan Detection is enabled, the cable gateway responds to Internet-based port

scans.

• When

IP Flood Detection is enabled, the cable gateway blocks malicious devices that are

attempting to flood devices.

Advanced Settings

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Use Web Features to have the firewall block certain web-oriented cookies, Java scripts, and pop-up windows.

Click the Apply button to save your settings.

Port Forwarding and Port Triggering

By default, the gateway blocks inbound traffic from the Internet to your computers except for replies to your outbound traffic. Create exceptions to this rule for these purposes:

• To allow remote computers on the Internet to access a server on your local network.

• To allow certain applications and games to work correctly when your gateway does not

recognize their replies.

Your gateway provides two features for creating these exceptions: port forwarding and port triggering. The next sections provide background information to help you understand how port forwarding and port triggering work, and the differences between the two.

Remote Computer Access Basics

When a computer on your network accesses a computer on the Internet, your computer sends your gateway a message containing the source and destination address and process information. Before forwarding your message to the remote computer, your gateway has to modify the source information and create and track the communication session so that replies can be routed back to your computer.

Here is an example of normal outbound traffic and the resulting inbound responses:

1. You open a browser, and your operating system assigns port number 5678 to this

browser session.

2. You type http://www.example.com into the URL field, and your computer creates a web page

request message with the following address and port information. The request message is sent to your gateway.

Source address. The IP address of your computer. Source port number. 5678, which is the browser session. Destination address. The IP address of www.example.com, which your computer finds

by asking a DNS server. Destination port number. 80, which is the standard port number for a web server

process.

3. Your gateway creates an entry in its internal session table describing this communication

session between your computer and the web server at www.example.com. Before sending the web page request message to www.example.com, your gateway stores the original information and then modifies the source information in the request message, performing Network Address Translation (NAT):

Advanced Settings

Wireless Cable Gateway CG3300CMR

• The source address is replaced with the public IP address of your gateway. This step

is necessary because your computer uses a private IP address that is not globally unique and cannot be used on the Internet.

• The source port number is changed to a number that is chosen by the gateway, such

as 33333. This step is necessary because two computers could independently be using the same session number.

Your gateway then sends this request message through the Internet to the web server at www.example.com.

4. The web server at www.example.com composes a return message with the requested web

page data. The return message contains the following address and port information. The web server then sends this reply message to your gateway.

Source address. The IP address of www.example.com. Source port number. 80, which is the standard port number for a web server process. Destination address. The public IP address of your gateway. Destination port number. 33333.

5. Upon receiving the incoming message, your gateway checks its session table to determine

whether there is an active session for port number 33333. Finding an active session, the gateway then modifies the message to restore the original address information that is replaced by NAT. Your gateway sends this reply message to your computer, which displays the web page from www.example.com. The message now contains the following address and port information.

Source address. The IP address of www.example.com. Source port number. 80, which is the standard port number for a web server process. Destination address. The IP address of your computer. Destination port number. 5678, which is the browser session that made the initial

request.

6. When you finish your browser session, your gateway eventually detects a period of inactivity

in the communications. Your gateway then removes the session information from its session table, and incoming traffic is no longer accepted on port number 33333.

Port Triggering to Open Incoming Ports

In the preceding example, requests are sent to a remote computer by your gateway from a particular service port number, and replies from the remote computer to your gateway are directed to that port number. If the remote server sends a reply to a different port number, your gateway does not recognize it and discards it. However, some application servers (such as FTP and IRC servers) send replies to multiple port numbers. Using the port triggering function of your gateway, you can tell the gateway to open additional incoming ports when a particular outgoing port originates a session.

An example is Internet Relay Chat (IRC). Your computer connects to an IRC server at destination port 6667. The IRC server not only responds to your originating source port, but

Advanced Settings

Wireless Cable Gateway CG3300CMR

also sends an “identify” message to your computer on port 113. Using port triggering, you can tell the gateway, “When you initiate a session with destination port 6667, you have to allow incoming traffic also on port 113 to reach the originating computer.” Using steps similar to the preceding example, the following sequence shows the effects of the port triggering rule you have defined:

1. You open an IRC client program to start a chat session on your computer.

2. Your IRC client composes a request message to an IRC server using a destination port

number of 6667, the standard port number for an IRC server process. Your computer then sends this request message to your gateway.

3. Your gateway creates an entry in its internal session table describing this communication

session between your computer and the IRC server. Your gateway stores the original information, performs Network Address Translation (NAT) on the source address and port, and sends this request message through the Internet to the IRC server.

4. Noting your port triggering rule and having observed the destination port number of 6667,

your gateway creates an additional session entry to send any incoming port 113 traffic to your computer.

5. The IRC server sends a return message to your gateway using the NAT-assigned source

port (as in the previous example, say port 33333) as the destination port. The IRC server also sends an identify message to your gateway with destination port 113.

6. Upon receiving the incoming message to destination port 33333, your gateway checks its

session table to determine whether there is an active session for port number 33333. Finding an active session, the gateway restores the original address information that is replaced by NAT and sends this reply message to your computer.

7. Upon receiving the incoming message to destination port 113, your gateway checks its

session table and learns that there is an active session for port 113, associated with your computer. The gateway replaces the destination IP address of the message with the IP address of your computer and forwards the message to your computer.

8. When you finish your chat session, your gateway eventually senses a period of inactivity in

the communications. The gateway then removes the session information from its session table, and incoming traffic is no longer accepted on ports 33333 or 113.

To configure port triggering, you need to know which inbound ports the application needs. Also, you need to know the number of the outbound port that triggers the opening of the inbound ports. You can usually determine this information by contacting the publisher of the application or user groups or newsgroups.

Note: Only one computer at a time can use the triggered application.

Port Forwarding to Permit External Host Communications

In both of the preceding examples, your computer initiates an application session with a server computer on the Internet. However, you need to allow a client computer on the Internet to initiate a connection to a server computer on your network. Normally, your gateway ignores any inbound traffic that is not a response to your own outbound traffic. You can configure exceptions to this default rule by using the port forwarding feature.

Advanced Settings

Wireless Cable Gateway CG3300CMR

A typical application of port forwarding can be shown by reversing the client-server relationship from the previous web server example. In this case, a browser on a remote computer accesses a web server running on a computer in your local network. Using port forwarding, you can tell the gateway, “When you receive incoming traffic on port 80 (the standard port number for a web server process), forward it to the local computer at

192.168.1.123.” The following sequence shows the effects of the port forwarding rule you have defined:

1. The user of a remote computer opens a browser and requests a web page from

www.example.com, which resolves to the public IP address of your gateway. The remote computer composes a web page request message with the following destination information:

Destination address. The IP address of www.example.com, which is the address of your gateway.

Destination port number. 80, which is the standard port number for a web server process.

The remote computer then sends this request message through the Internet to your gateway.

2. Your gateway receives the request message and looks in its rules table for any rules

covering the disposition of incoming port 80 traffic. Your port forwarding rule specifies that incoming port 80 traffic is forwarded to local IP address 192.168.1.123. Therefore, your gateway modifies the destination information in the request message:

The destination address is replaced with 192.168.1.123.

Your gateway then sends this request message to your local network.

3. Your web server at 192.168.1.123 receives the request and composes a return message

with the requested web page data. Your web server then sends this reply message to your gateway.

4. Your gateway performs Network Address Translation (NAT) on the source IP address, and

sends this request message through the Internet to the remote computer, which displays the web page from www.example.com.

To configure port forwarding, you need to know which inbound ports the application needs. Usually you can determine this information by contacting the publisher of the application or the relevant user groups and newsgroups.

Advanced Settings

Wireless Cable Gateway CG3300CMR

How Port Forwarding Differs from Port Triggering

The following points summarize the differences between port forwarding and port triggering:

• Port triggering is used by any computer on your network, although only one computer can

use it at a time.

• Port forwarding is configured for a single computer on your network.

• Port triggering requires specific outbound traffic to open the inbound ports, and the

triggered ports are closed after a period of no activity.

• Port forwarding is always active and is never triggered.

Set Up Port Forwarding to Local Servers

Using the port forwarding feature, you can allow certain types of incoming traffic to reach servers on your local network. For example, you want to make a local web server, FTP server, or game server visible and available to the Internet.

Use the Port Forwarding/Port Triggering screen to configure the gateway to forward specific incoming protocols to computers on your local network. In addition to servers for specific applications, you can also specify a default DMZ server to which all other incoming protocols are forwarded.

Before starting, you determine which type of service, application, or game you want to provide, and the local IP address of the computer that provides the service. The server computer always has to have the same IP address.

 To set up port forwarding:

Tip: To ensure that your server computer always has the same IP address,

use the reserved IP address feature of your wireless cable gateway.

Advanced Settings

Wireless Cable Gateway CG3300CMR

1. Select Advanced Setup > Port Forwarding/Port Triggering to display the following

screen:

Port Forwarding is selected as the service type.

2. From

3. In

the Service Name list, select the service or game that you host on your network. If the

service does not appear in the list, see Add a Custom Service o

n page 64.

the corresponding Server IP Address field, enter the last digit of the IP address of your

local computer that provides this service.

4. Click Add. The

service appears in the list in the screen.

Add a Custom Service

To define a service, game, or application that does not appear in the Service Name list, determine which port number or range of numbers the application uses. You can usually determine this information by contacting the publisher of the application or user groups or newsgroups.

 To add a custom service:

1. Select Advance

2. Select Port Forwarding as the service type.

d > Advanced Setup > Port Forwarding/Port Triggering.

Advanced Settings

Wireless Cable Gateway CG3300CMR

3. Click the Add Custom Service button to display the following screen:

4. In the Service Name field, enter a descriptive name.

5. In the Protocol list, select the protocol. If

6. In the S

• I

tarting Port fields, enter the beginning port number.

f the application uses a single port, enter the same port number in the Ending Port

you are unsure, select TCP/UDP.

field.

• I

f the application uses a range of ports, enter the ending port number of the range in

the Ending Port field.

7. In t

he Internal IP Address field, enter the IP address of your local computer that provides this

service.

8. Click App

ly . The service appears in the list in the Port Forwarding/Port Triggering screen.

Edite or Delete a Port Forwarding Entry

 To edit or delete a port forwarding entry:

n the table, select the radio button next to the service name.

1. I

2. Click Edit Service or Delete Service.

Advanced Settings

Wireless Cable Gateway CG3300CMR

Application Example: Making a Local Web Server Public

If you host a web server on your local network, you can use port forwarding to allow web requests from anyone on the Internet to reach your web server.

 To make a local web server public:

1. Assign your web server either a fixed IP address or a dynamic IP address using DHCP

address reservation. In this example, your gateway always gives your web server an IP address of 192.168.1.33.

2. In the Port Forwarding/Port Triggering screen, configure the gateway to forward the HTTP

service to the local address of your web server at 192.168.1.33. HTTP (port 80) is the standard protocol for web servers.

3. (Optional) Register a host name with a Dynamic DNS service, and configure your gateway

to use the name as described in the Internet, a remote user has to know the IP address that your ISP assigns. However, if you use a Dynamic DNS service, the remote user can reach your server by a user-friendly Internet name, such as mynetgear.dyndns.org.

Dynamic DNS on page 68. To access your web server from

Set Up Port Triggering

Port triggering is a dynamic extension of port forwarding that is useful in these cases:

• More than one local computer needs port forwarding for the same application (but not

simultaneously).

• An application opens incoming ports that are different from the outgoing port.

When port triggering is enabled, the gateway monitors outbound traffic looking for a specified outbound “trigger” port. When the gateway detects outbound traffic on that port, it remembers the IP address of the local computer that sent the data. The gateway then temporarily opens the specified incoming port or ports, and forwards incoming traffic on the triggered ports to the triggering computer.

While port forwarding creates a static mapping of a port number or range to a single local computer, port triggering can dynamically open ports to any computer that needs them and can close the ports when they are no longer needed.

Note: If you use applications such as multiplayer gaming, peer-to-peer

connections, real-time communications such as instant messaging, or remote assistance (a feature in Windows XP), enable Universal Plug and Play (UPnP) according to the instructions in

and Play on page 70.

Universal Plug

To set up port triggering, you need to know which inbound ports the application needs. Also, you need to know the number of the outbound port that triggers the opening of the inbound

Advanced Settings

Wireless Cable Gateway CG3300CMR

ports. You can usually determine this information by contacting the publisher of the application or user groups or newsgroups.

 To set up port triggering:

1. Select Adv

2. Select th

e Port Triggering radio button to display the port triggering information.

anced > Advanced Setup > Port Forwarding/Port Triggering.

3. Clear the Disable Port Triggering check box if it is selected.

Note: If the Disable Port Triggering check box is selecte

port triggering, port triggering is disabled. However, any port triggering configuration information you added to the gateway is retained even though it is not used.

4. In the Port T

5. This

value controls the inactivity timer for the designated inbound ports. The inbound ports

riggering Time-out field, enter a value up to 9999 minutes.

close when the inactivity time expires. This step is required because the gateway cannot be sure when the application has terminated.

d after you configure

Advanced Settings

Wireless Cable Gateway CG3300CMR

6. Click Add Service to display the following screen:

7. In the Service Name field, type a descriptive service name. No spaces are allowed for the

service name field.

8. In

the Service User list, select Any (the default) to allow any computer on the Internet to use

this service. Otherwise, select Single address, and enter the IP address of one computer to restrict the service to a particular computer.

9. Select the service type,

either TCP or UDP or both (TCP/UDP). If you are not sure, select

TCP/UDP.

10. In

the Triggering Port field, enter the number of the outbound traffic port that causes the

inbound ports open.

11. Enter th

e inbound connection port information in the Connection Type, Starting Port, and

Ending Port fields.

12. Click Apply. The service appe

ars in the Port Triggering Portmap table.

Dynamic DNS

If your Internet service provider (ISP) gave you a permanently assigned IP address, you can register a domain name and have that name linked with your IP address by public Domain Name Servers (DNS). However, if your Internet account uses a dynamically assigned IP

Advanced Settings

Wireless Cable Gateway CG3300CMR

address, you do not know in advance what your IP address is, and the address can change frequently. In this case, you can use a commercial Dynamic DNS service. This type of service lets you register your domain to their IP address and forwards traffic directed at your domain to your frequently changing IP address.

If your ISP assigns a private WAN IP address (such as 192.168.x.x or 10.x.x.x), the Dynamic DNS se

rvice does not work because private addresses are not routed on the Internet.

Your gateway contains a client that can connect to

the Dynamic DNS service that is provided

by DynDNS.org. First visit their website at http://www.dyndns.org and obtain an account and

host name that you configure in the gateway. Then, whenever your ISP-assigned IP address changes, your gateway automatically contacts the Dynamic DNS service provider, logs in to your account, and registers your new IP address. If your host name is hostname, for example, you can reach your gateway at http://hostname.dyndns.org.

 To set up Dynamic DNS:

1. On t

he Advanced tab, select Advanced Setup > Dynamic DNS to display the following

screen:

2. Register for an account with one of the Dynamic DNS service providers whose names

appear in the Service Provider list.

3. Select th

e Use a Dynamic DNS Service check box.

Advanced Settings

Wireless Cable Gateway CG3300CMR

4. Select the name of your Dynamic DNS service provider. If your Dynamic DNS service

provider is DynDNS.org, for example, select www.dyndns.org.

5. Type the host name (or domain name) that your Dynamic DNS service provider gave you.

6. Type the user name for your Dynamic DNS account. This name is the name that you use to

7. Type the password (or key) for your Dynamic DNS account.

8. Click Apply to save your configuration.

Cable Status

For information about this topic, see Cable Connection Status on page 44.

Universal Plug and Play

Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, to 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.

Note: If you use applications such as multiplayer gaming, peer-to-peer

connections, or real-time communications such as instant messaging or remote assistance (a feature in Windows XP), enable UPnP.

Advanced Settings

Wireless Cable Gateway CG3300CMR

 To turn on Universal Plug and Play:

1. Select Advanced > Advanced Setup > UPnP. The UPnP screen displays.

2. Specify the following settings:

Turn UPnP On. UPn

P can be enabled or disabled for automatic device configuration. The default setting for UPnP is enabled. If this check box is not selected, the gateway does not allow any device to control the resources automatically, such as port forwarding (mapping) of the gateway.

Advertisement Period. The

advertisement period is how often the gateway broadcasts its UPnP information. This value can range from 1 to 1440 minutes. The default period is 30 minutes. Shorter durations ensure that control points have current device status at the expense of additional network traffic. Longer durations can compromise the freshness of the device status, but can significantly reduce network traffic.

Advertisement Time to Live. The

time to live for the advertisement is measured in hops (steps) for each UPnP packet sent. The time to live hop count is the number of steps a broadcast packet is 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 are fine for most home networks. If you notice that some devices are not being updated or reached correctly, then it is necessary to increase this value.

Advanced Settings

Wireless Cable Gateway CG3300CMR

UPnP Portmap Table. The UPnP Portmap Table displays the IP address of each UPnP

device that is currently accessing the gateway and which ports (internal and external) that device has opened. The UPnP Portmap Table also displays what type of port is open and whether that port is still active for each IP address.

3. Click Apply to save

your settings.

IPv6

You can use this feature to display the IPv6 Internet connection type.

 To display the IPv6 Internet connection readings:

Select Advanc

ed > Advanced Setup > IPv6 to display the following screen:

The following information is displayed in this screen: WAN MAC Address. T

he address of the gateway interface that is facing the MSO. This

interface acquires its IPv6 provisioning directly from the MSO provisioning server. WAN IPv6 Address. The ad

interface acquires its IPv6 provisioning directly from the MSO provisioning server. WAN IPv6 Prefix.

dress of the gateway interface that is facing the MSO. This

Advanced Settings

Wireless Cable Gateway CG3300CMR

LAN MAC Address. The address of the gateway interface that is facing hosts on the

subscriber side of the gateway. This interface derives its IPv6 provisioning using the IPv6 prefix that is supplied by the MSO provisioning server.

LAN IPv6 Address. Th

e address of the gateway interface that is facing hosts on the subscriber side of the gateway. This interface derives its IPv6 provisioning using the IPv6 prefix that is supplied by the MSO provisioning server.

LAN IPv6 Prefix. IPv6 Hosts.

A table with one row for each IPv6 host that is connected to the gateway.

NAT

You can enable or disable Network Address Translation.

 To enable or disable Network Address Translation:

1. Select Adv

anced > Advanced Setup > NAT to display the following screen:

2. Select or clear the Tur n NAT On check box.

3. Click the Ap

ply button to save your settings.

Advanced Settings

7. Troubleshooting

Find and fix common issues

This chapter gives information about troubleshooting your Wireless Cable Gateway CG3300CMR. For the common problems listed, go to the section indicated.

• Have I connected the gateway correctly?

Go to Basic Functions on page 74.

• I cannot access the gateway configuration with my browser.

Go to Connect to the Main Menu of the Gateway on page 75.

• I have configured the gateway but I cannot access the Internet.

Go to Troubleshoot the ISP Connection on page 76.

• I cannot remember the configuration password of the gateway or I want to clear the

configuration and start over again. Go to Factory Default Settings on page 79.

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

software updates at

support.netgear.com.

Basic Functions

After you have turned on power to the gateway, do the following:

1. Check to see that the Power LED is on.

2. Check that the numbered Ethernet LEDs come on momentarily.

3. After a few seconds, check 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.

Wireless Cable Gateway CG3300CMR

Using LEDs to Troubleshoot

The following table provides help when using the LEDs for troubleshooting.

LED Behavior Action

All LEDS are off when the gateway is plugged in.

All LEDs stay on. • Clear the configuration of the gateway to its factory defaults. This

LAN LED is off for a port with an

rnet connection.

Ethe

Internet LED is off and the gateway is conn television cable.

ected to the cable

Make sure that the power cord is properly connected to your gateway and that the power supply adapter is properly connected to a functioning power outlet.

Check that you are using the 12V DC power adapter from NETGEAR

r this product.

fo If the error persists, you have a hard

support.

ration sets the IP address of the gateway to 192.168.1.1. See

ope

Factory Default Settings on page 79.

• If the error persists, you have a hardware problem. Contact chnical support.

• Make sure that the Ethernet cable connections are secure at the

gateway and at the hub or computer.

• Make sure that power is turned on to

computer.

• Be sure that you are using the correct 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 quality is good enough for cable modem service.

• Remove any excessive splitters that you have on your cable line.

Run a home.

service provider. Your provider can verify that the signal

“home run” back to the point where the cable enters your

ware problem. Contact technical

the connected hub or

Connect to the Main Menu of the Gateway

If you are unable to access the main menu of the gateway from a computer on your local network, check the following:

• Che

• Make sure t

ck the Ethernet connection between the computer and the gateway as described in

the previous section.

hat your IP address of your computer is on the same subnet as the gateway. If you are using the recommended addressing scheme, the address of your computer is in the range of 192.168.1.10 to 192.168.1.254.

Troubleshooting

Wireless Cable Gateway CG3300CMR

Note: If the IP address of your computer is shown as 169.254.x.x:

Recent versions of Windows and Mac OS generate and assign an IP address when the computer cannot reach a DHCP server. These autogenerated addresses are in the range of 169.254.x.x. If your IP address is in this range, check the connection from the computer to the gateway and reboot your computer.

• If the IP address of your gateway has been changed and you do not know the current IP

address, clear the configuration of the gateway to its factory defaults. This operation sets the IP address of the gateway to 192.168.1.1. This procedure is explained in

Default Settings on page 79.

• Make sure that 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 that you are using the correct login information. The gateway user name

admin is lower-case (Caps Lock is off). The default password of password.

Factory

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 have occurred, but

the web browser might be caching the old configuration.

Troubleshoot the ISP Connection

When your gateway is unable to access the Internet and your Internet LED is on, register the cable MAC address or device MAC address of your gateway with your cable service provider.

Additionally, your computer does not have the gateway that is configured as its TCP/IP gateway. If your computer obtains its information from the gateway by DHCP, reboot the computer and verify the gateway address.

Troubleshoot 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. You can easily troubleshoot a TCP/IP network by using the ping utility in your computer or workstation.

Test the LAN Path to Your Gateway

You can use ping to verify that the LAN path to your gateway is set up correctly.

Troubleshooting

Wireless Cable Gateway CG3300CMR

 To ping the gateway from a PC running Windows 95 or later:

1. From the Windows toolbar, click the Start button and select Run.

2. In the field that is provided, type ping and then the IP address of the gateway, as in this

example:

ping 192.168.1.1

3. Click OK.

You 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

If the path is not working correctly, you could have one of the following problems:

• Wrong physical connections.

- Make sure that the LAN port LED is on. If the LED is off, see Using LEDs to

Troubleshoot on page 75.

- Check the corresponding link LEDs are on for your network interface card and 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 computer or workstation.

- Verify that the IP address for your gateway and your workstation are correct and

that the addresses are on the same subnet.

Test the Path from Your Computer to a Remote Device

After verifying that the LAN path works correctly, test the path from your computer 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 the DNS server of your ISP.

If the path is functioning correctly, replies as in the previous section are displayed. If you do not receive replies:

• Check that your computer has the IP address of your gateway is listed as the default

gateway. If the IP configuration of your computer is assigned by DHCP, this information is not visible in the Network Control Panel of your computer. Verify that the IP address of the gateway is listed as the default gateway.

• Check that the network address of your computer (the portion of the IP address specified

by the netmask) is different from the network address of the remote device.

Troubleshooting

Wireless Cable Gateway CG3300CMR

• Check that your Internet LED is on.

• If your ISP assigned a host name to your computer, enter that host name as the account

name in the Basic Settings screen.

Wireless Performance and Gateway Location

The range of your wireless connection can vary 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 computers operate.

• In an elevated location such as a high shelf where the wirelessly connected

computers have line-of-sight access (even if through walls).

• Away from sources of interference, such as computers, microwave ovens, and

2.4-GHz cordless phones.

• Away from large metal surfaces.

• To reduce interference when using more than one access point, NETGEAR

recommends using 5 channel spacing between adjacent access points (for example, use Channels 1 and 6, or 6 and 11).

The time that it takes to establish a wireless connection can vary depending on both your security settings and the gateway location. WEP connections can take slightly longer to establish. Also, WEP encryption can consume more battery power on a notebook computer.

Troubleshooting

A. Supplemental Information

This appendix provides factory default settings and technical specifications for the Wireless Cable Gateway CG3300CMR.

Factory Default Settings

You can return the gateway to its factory settings. On the back panel of the gateway, press and hold the Restore Factory Settings button for over 7 seconds. The gateway resets and returns to the factory configuration settings shown in the following table.

Factory Default Settings

Gateway login User login URL http://192.168.1.1

User name and password (case-sensitive)

Local network (LAN)

Firewall Inbound communication from the

Internet connection

LAN IP 192.168.1.1

Subnet mask 255.255.255.0

DHCP server Enabled

DHCP starting IP address 192.168.1.2

DHCP ending IP address 192.168.1.254

Internet

Outbound communication to the Internet

Source MAC filtering Disabled

WAN MAC address Use default hardware address

WAN MTU size 1500

admin/password

Disabled (except traffic on port 80, the HTTP port)

Enabled (all)

Wireless Cable Gateway CG3300CMR

Factory Default Settings (continued)

Wireless Wireless communication Enabled

SSID name As shown on the product label

Security WPA/WPA2

The default WPA/WPA2 passphrase is as shown on the product label.

Broadcast SSID Enabled

Transmission speed Auto

Country/region EU

RF channel Auto

Operating mode n, g, and b

Data rate Best

Output power Full

Access point Enabled

Authentication type Open System

Wireless card access list All wireless stations allowed

*. 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 mater ials and construction, and network overhead, may lower actual data throughput rate.

Technical Specifications

The following table describes the technical specifications for the gateway.

Technical Specifications

Network protocol and standards compatibility

Power adapter • Europe (input): 230V, 50 Hz, input

Physical specifications • Dimensions: 7.5 by 3.8 by 1.4 in. (195 by 112 by 33 mm)

Environmental • Operating temperature: 32° to 140°F (0° to 40°C)

Data and routing protocols: TCP/IP, DHCP server and client, DNS relay, NAT (many-to-one),  TFTP client, VPN passthrough (IPSec, PPTP)

• All regions (output): 12V DC @ 1.5A output 18W maximum

• Weight: 0.65 lb (0.28 kg)

• Operating humidity: 90% maximum relative humidity, noncondensing

• Electromagnetic emissions: Meets requirements of: FCC Part 15 Class B.

Supplemental Information

Wireless Cable Gateway CG3300CMR

Technical Specifications (continued)

Interface Local: 10BASE-T, 100/1000BASE-Tx, RJ-45

802.11n/g/b

Internet: DOCSIS 3.0. Downward compatible with DOCSIS 2.0, 1.1 and 1.0

Supplemental Information

B. Notification of Compliance

NETGEAR Wireless Routers, Gateways, APs

Regulatory Compliance Information

Note: 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.

Note: This product's firmware limits operation to only the cha Therefore, all options described in this user's guide may not be available in your version of the product.

nnels allowed in a particular Region or Country.

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 (2.4Ghz), EN301 489-17 EN60950-1 For complete DoC, visit the NETGEAR EU De

http://support.netgear.com/app/answe

EDOC in Languages of the European Community

rs/detail/a_id/1 1621

clarations of Conformity website at:

Language Statement

Cesky [Czech] NETGEAR Inc.

a dalšími príslušnými ustanoveními smernice 1999/5/ES.

Dansk [Danish] Undertegnede NETGEAR Inc. erklærer herved, at følgende udstyr Radiolan overholder de

væsentlige krav og øvrige relevante krav i direktiv 1999/5/EF.

Deutsch [German]

Eesti [Estonian] Käesolevaga kinnitab NETGEAR Inc. seadme Radiolan vastavust direktiivi 1999/5/EÜ

English Hereby, NETGEAR Inc., declares that this Radiolan is in compliance with the essential

Hiermit erklärt NETGEAR Inc., dass grundlegenden Anforderungen und den übrigen einschlägigen Bestimmungen der Richtlinie 1999/5/EG befindet.

põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele .

requirements and other relevant provisions of Directive 1999/5/EC.

tímto prohlašuje, že tento Radiolan je ve shode se základními požadavky

sich das Gerät Radiolan in Übereinstimmung mit den

Wireless Cable Gateway CG3300CMR

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. ∆ΗΛΩΝΕΙ ΟΤΙ Radiolan ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ

ΤΙΣ ΟΥΣΙΩ∆ΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ ∆ΙΑΤΑΞΕΙΣ ΤΗΣ Ο∆ΗΓΙΑΣ

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.

Lietuvių [Lithuanian]

Nederlands [Dutch]

Malti [Maltese] Hawnhekk, NETGEAR Inc., jiddikjara li dan Radiolan jikkonforma mal-htigijiet essenzjali u

Magyar [Hungarian]

Polski [Polish] Niniejszym NETGEAR Inc. oświadcza, że Radiolan jest zgodny z zasadniczymi

Português [Portuguese]

Slovensko [Slovenian]

Slovensky [Slovak]

Suomi [Finnish] NETGEAR Inc. vakuuttaa täten että Radiolan tyyppinen laite on direktiivin 1999/5/EY

Šiuo NETGEAR Inc. deklaruoja, kad šis Radiolan atitinka esminius reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.

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.

ma provvedimenti ohrajn relevanti li hemm fid-Dirrettiva 1999/5/EC.

Alulírott, NETGEAR Inc. nyilatkozom, hogy a Radiolan megfelel a vonatkozó alapvetõ követelményeknek és az 1999/5/EC irányelv egyéb elõírásainak.

wymogami oraz pozostałymi stosownymi postanowieniami Dyrektywy 1999/5/EC.

NETGEAR Inc. declara que este Radiolan está conforme com os requisitos essenciais e outras disposições da Directiva 1999/5/CE.

NETGEAR Inc. izjavlja, da je ta Radiolan v skladu z bistvenimi zahtevami in ostalimi relevantnimi določili direktive 1999/5/ES.

NETGEAR Inc. týmto vyhlasuje, že Radiolan spĺňa základné požiadavky a všetky príslušné ustanovenia Smernice 1999/5/ES.

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.

Notification of Compliance

Wireless Cable Gateway CG3300CMR

Íslenska [Icelandic]

Norsk [Norwegian]

This device is a 2.4 GHz wideband transmission system (transceiver), intended for use in all EU member states and EFTA countries, except in France and Italy where restrictive use applies.

In Italy the end-user should apply for a license at the national spectrum authorities in order to obtain authorization to use the device for setting up outdoor radio links and/or for supplying public access to telecommunications and/or network services.

This device may not be used for setting up outdoor radio links in France and in some areas the RF output power may be limited to 10 mW EIRP in the frequency range of 2454 - 2483.5 MHz. For detailed information the end-user should contact the national spectrum authority in France.

Hér með lýsir NETGEAR Inc. yfir því að Radiolan er í samræmi við grunnkröfur og aðrar kröfur, sem gerðar eru í tilskipun 1999/5/EC.

NETGEAR Inc. erklærer herved at utstyret Radiolan er i samsvar med de 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.

FCC Declaration of Conformity

We, NETGEAR, Inc., 350 East Plumeria Drive, San Jose, CA 95134, declare under our sole responsibility that the Wireless Cable Gateway CG3300CMR complies with Part 15 Subpart B of FCC CFR47 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.

FCC Caution

• Any changes or modifications not expressly approved by the party responsible for compliance could void the

user’s authority to operate this equipment.

• This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This

device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Notification of Compliance

Wireless Cable Gateway CG3300CMR

• For product available in the USA market, only channel 1~11 can be operated. Selection of other channels is not

possible.

• Thi

s device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or

transmitter.

Canadian Department of Communications Radio Interference Regulations

This digital apparatus (Wireless Cable Gateway CG3300CMR) 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.

This Class [B] digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du Canada

Industry Canada

This device complies with RSS-210 of the Industry Canada Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

IMPORTANT NOTE: Radiation Exposure Statement:

This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Caution:

Ce dispositif est conforme à la norme CNR-210 d'Industrie Canada applicable aux appareils radio exempts de licence. Son fonctionnement est sujet aux deux conditions suivantes: (1) le dispositif ne doit pas produire de brouillage préjudiciable, et (2) ce dispositif doit accepter tout brouillage reçu, y compris un brouillage susceptible de provoquer un fonctionnement indésirable.

NOTE IMPORTANTE: Déclaration d'exposition aux radiations:

Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement non contrôlé. Cet équipement doit être installé et utilisé avec un minimum de 20 cm de distance entre la source de rayonnement et votre corps.

Interference Reduction Table

The table below shows the Recommended Minimum Distance between NETGEAR equipment and household appliances to reduce interference (in feet and meters).

Household Appliance Recommended Minimum Distance

(in feet and meters)

Microwave ovens 30 feet / 9 meters

Baby Monitor - Analog 20 feet / 6 meters

Baby Monitor - Digital 40 feet / 12 meters

Cordless phone - Analog 20 feet / 6 meters

Cordless phone - Digital 30 feet / 9 meters

Bluetooth devices 20 feet / 6 meters

ZigBee 20 feet / 6 meters

Notification of Compliance

Index

access, viewing logs 47 accessing remote computer 59

adding

custom services 64

guest network 20 address reservation 31 advertisement period 71 alerts, emailing 38 attached devices 19 authentication, required by mail server 38

backing up configuration 49 basic settings 13

blocking

inbound traffic 59

keywords 34

services 35

sites 34

cable channel 44 compliance 82 configuration file 49

configuring

DMZ server 27

Dynamic DNS 69

port forwarding 63

port triggering 66

user-defined services 35 CTS/RTS Threshold 54 custom service (port forwarding) 64

configuration 50 keywords 34

port forwarding entry 65 denial of service (DoS) protection 33 devices, attached 19 DHCP server 30 DMZ server 27 DNS servers 59 Domain Name Server (DNS) addresses 25 Dynamic DNS 68

email notices 38 erasing configuration 50

factory default settings, restoring 50 firewall settings 33 firmware version 42 fragmentation length 54 fragmented data packets 27 front panel 7

gateway front panel 7 gateway interface, described 12 gateway main menu 75 gateway rear panel 9

genie, NETGEAR, settings

advanced 22

basic 15 guest networks 20, 46

dashboard 12 data packets, fragmented 27 default DMZ server 27 default factory settings 50

deleting

host, trusted 35

inbound traffic, allowing or blocking 59

Wireless Cable Gateway CG3300CMR

Internet connection, setting up 24 Internet Relay Chat (IRC) 60 Internet services, blocking access 35 IP addresses 11

auto-generated 76 dynamic 68 reserved 31

keywords 34

label, product 10 LAN port settings 42 LAN setup 28 LEDs, troubleshooting using 75 local servers, port forwarding to 63 logging in 11

logs

emailing 38 viewing 47

MAC addresses, product label 10 mail server, outgoing 38 maintenance settings 40 menus, described 12, 13 mixed mode security options 21 MTU size 27

port filtering 35 port forwarding 59, 61, 63 port numbers 35 port triggering 59, 60, 63, 66 Preamble mode 54

preset security

about 16 passphrase 18

radio, wireless 53 reserved IP adresses 31 restoring configuration file 49 router interface, described 12 router status, viewing 41

security options 21 security PIN 10 sending logs by email 38 serial number, product label 10 services, blocking 35 settings, default 79 sites, blocking 34 SMTP server 38 specifications, technical 79

SSID

described 18, 53 product label 10

status, router, viewing 41

NAT (Network Address Translation) 27, 59

NETGEAR genie settings

advanced 22 basic, initial 15

networks, guest 20, 46

outgoing mail server 38

packets, fragmented 27

passphrases

changing 18 product label 10

ping utility 76

TCP/IP network, troubleshooting 76 technical specifications 79, 80 technical support 2 Temporal Key Integrity Protocol (TKIP) 21 time to live, advertisement 71 time-out, port triggering 67 trademarks 2 troubleshooting 74

ISP connection 76 ping utility 76 TCP/IP network 76 using LEDs 75

trusted host 35

Universal Plug and Play (UPnP) 70 user-defined services 35

viewing

logs 47 router status 41

WAN setup 26 wireless channel 18 wireless mode 18

wireless network name (SSID)

broadcasting 18 described 18, 53

product label 10 wireless network settings 18, 53 wireless radio 53 wireless security options 21 wireless settings 16, 18 WPA encryption 21 WPA2 encryption 21 WPA2-PSK encryption 21 WPA-PSK + WPA2-PSK encryption 21 WPA-PSK encryption 21 WPA-PSK/WPA2-PSK mixed mode 21 WPS button 8

Wireless Cable Gateway CG3300CMR

NETGEAR CG3300CMR User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual