Netgear G Router Wgr614v9 Manual

							Wireless-G Router WGR614v9 Reference Manual
Safeguarding Your Network 2-7
v1.1, May 2008
•Channel. This field determines which operating frequency is used. It should not be necessary 
to change the wireless channel unless you notice interference problems with another nearby 
wireless network. The wireless router uses channel bonding technology to extend the 
bandwidth for data transmission. For more information about the wireless channel 
frequencies, see the online document that you can access from “Wireless Networking Basics” 
in Appendix B.
•Mode. This field determines which data communications protocol is used. You can choose 
from: b and g; or g only.
•Security Options. The selection of wireless security options can significantly affect your 
network performance. The time it takes to establish a wireless connection can vary depending 
on both your security settings and router placement. 
WEP connections can take slightly longer to establish. Also, WEP, WPA-PSK, and WPA2-
PSK encryption can consume more battery power on a notebook computer, and can cause 
significant performance degradation with a slow computer. Instructions for configuring the 
security options can be found in “Choosing Appropriate Wireless Security” on page 2-1. A full 
explanation of wireless security standards is available in the online document that you can 
access from “Wireless Networking Basics” in Appendix B.
3.Click Apply to save your settings.
Configuring WEP Wireless Security
WEP Shared Key authentication and WEP data encryption can be defeated by a determined 
eavesdropper using publicly available tools.
WEP offers the following options:
•Open System. With Open System authentication and 64 or 128 bit WEP data encryption, the 
Wireless-G Router does perform data encryption but does not perform any authentication. 
Anyone can join the network. This setting provides very little practical wireless security.
•Shared Key. With Shared Key authentication, a wireless device must know the WEP key to 
join the network. Select the encryption strength (64 or 128 bit data encryption). Manually 
enter the key values, or enter a word or group of printable characters in the Passphrase field. 
Manually entered keys are not case-sensitive, but passphrase characters are case-sensitive. 
						

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To configure WEP data encryption:
1.Select Wireless Settings under Setup in the main menu.
2.In the Security Options section, select WEP. The WEP options display.
.
3.Select the authentication type and encryption strength.
4.You can manually or automatically program the four data encryption keys. These values must 
be identical on all computers and access points in your network.
•Automatic. In the Passphrase field, enter a word or group of printable characters, and 
click Generate. The passphrase is case-sensitive. For example, NETGEAR is not the 
same as nETgear. The four key fields are automatically populated with key values.
•Manual. Enter 10 hexadecimal digits (any combination of 0–9, a–f, or A–F). These 
entries are not case-sensitive. For example, AA is the same as aa.
Select which of the four keys to activate.
5.Click Apply to save your settings.
Note: If you use a wireless computer to configure WEP settings, you will be disconnected 
when you click Apply. You must then either configure your wireless adapter to 
match the wireless router WEP settings or access the wireless router from a wired 
computer to make any further changes. Not all wireless adapter configuration 
utilities support passphrase key generation.
Figure 2-3 
						

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Configuring WPA-PSK and WPA2-PSK Wireless Security
Wi-Fi Protected Access with Pre-Shared Key (WPA-PSK and WPA2-PSK) data encryption 
provides extremely strong data security, very effectively blocking eavesdropping. Because WPA 
and WPA2 are relatively new standards, older wireless adapters and devices might not support 
them. Check whether newer drivers are available from the manufacturer. Also, you might be able 
to use the Push N Connect feature to configure this type of security if it is supported by your 
wireless clients. See “Restricting Wireless Access by MAC Address” on page 2-11.
WPA–Pre-Shared Key does perform authentication. WPA-PSK uses TKIP (Temporal Key 
Integrity Protocol) data encryption, and WPA2-PSK uses AES (Advanced Encryption Standard) 
data encryption. Both methods dynamically change the encryption keys making them nearly 
impossible to circumvent.
Mixed mode allows clients using either WPA-PSK (TKIP) or WPA2-PSK (AES). This provides 
the most reliable security, and is easiest to implement, but it might not be compatible with older 
adapters.
To configure WPA-PSK, WPA2-PSK, or WPA-PSK+WPA2-PSK:
1.Select Wireless Settings under Setup in the main menu.
2.Select one of the WPA-PSK or WPA2-PSK options for the security type. The third option 
(WPA-PSK [TKIP] + WP2-PSK [AES]) is the most flexible, since it allows clients using 
either WPA-PSK or WPA2-PSK. 
3.In the Passphrase field, enter a word or group of 8–63 printable characters. The passphrase is 
case-sensitive.
Note: Not all wireless adapters support WPA. Furthermore, client software is also 
required. Windows XP with Service Pack 2 does include WPA support. 
Nevertheless, the wireless adapter hardware and driver must also support WPA. 
For instructions on configuring wireless computers or PDAs (personal digital 
assistants) for WPA-PSK security, consult the documentation for the product you 
are using. 
						

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4.Click Apply to save your settings.
Viewing Advanced Wireless Settings
This section describes the wireless settings that you can view and specify in the Advanced 
Wireless Settings screen, which you access under Advanced in the main menu.
To configure the advanced wireless security settings of your router:
1.Log in to the router as described in “Logging In to Your Wireless Router” on page 1-2.
2.Select Wireless Settings under Advanced in the main menu.
Figure 2-4
Figure 2-5 
						

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The available settings in this screen are:
•Enable SSID Broadcast. Clear this check box to disable broadcast of the SSID, so that 
only devices that know the correct SSID can connect. Disabling SSID broadcast nullifies 
the wireless network discovery feature of some products such as Windows XP.
•Enable Wireless Router Radio. If you disable the wireless router radio, wireless devices 
cannot connect to the Wireless-G Router. If you will not be using your wireless network 
for a period of time, you can clear this check box and disable all wireless connectivity.
•Enable WMM. Clear this check box to disable WMM. Disabling WMM turns off the 
wireless prioritization scheme. Note that wireless clients must also support WMM to take 
advantage of this feature.
•Wireless Card Access List. For information about this list, see “Restricting Wireless 
Access by MAC Address” on page 2-11.
.
Restricting Wireless Access by MAC Address
When a Wireless Card Access List is configured and enabled, the router checks the MAC address 
of any wireless device attempting a connection and allows only connections to computers 
identified on the trusted computers list. 
The Wireless Card Access List displays a list of wireless computers that you allow to connect to 
the router based on their MAC addresses. These wireless computers must also have the correct 
SSID and wireless security settings to access the wireless router.
The MAC address is a network device’s unique 12-character physical address, containing the 
hexadecimal characters 0–9, a–f, or A–F only, and separated by colons (for example, 
00:09:AB:CD:EF:01). It can usually be found on the bottom of the wireless card or network 
interface device. If you do not have access to the physical label, you can display the MAC address 
using the network configuration utilities of the computer. In WindowsXP, for example, typing the 
ipconfig/all command in an MSDOS command prompt window displays the MAC address as 
Physical Address. You might also find the MAC addresses in the router’s Attached Devices screen.
To restrict access based on MAC addresses:
1.Select Wireless Settings under Advanced in the main menu.
Note: The Fragmentation Threshold, CTS/RTS Threshold, and Preamble Mode 
options are reserved for wireless testing and advanced configuration only. Do 
not change these settings. 
						

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2.In the Advanced Wireless Settings screen, click Setup Access List to display the Wireless 
Card Access List.
3.Click Add to add a wireless device to the wireless access control list. The Wireless Card 
Access Setup screen opens and displays a list of currently active wireless cards and their 
Ethernet MAC addresses.
Figure 2-6
Figure 2-7 
						

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4.If the computer you want appears in the Available Wireless Cards list, you can select the radio 
button of that computer to capture its MAC address; otherwise, you can manually enter a name 
and the MAC address of the authorized computer. You can usually find the MAC address on 
the bottom of the wireless device.
5.Click Add to add this wireless device to the Wireless Card Access List. The screen changes 
back to the list screen. 
6.Repeat step 3 through step 5 for each additional device you want to add to the list.
7.Select the Turn Access Control On check box.
8.Click Apply to save your Wireless Card Access List settings.
Now, only devices on this list can wirelessly connect to the Wireless-G Router.
Tip: You can copy and paste the MAC addresses from the router’s Attached Devices 
screen into the MAC Address field of this screen. To do this, configure each 
wireless computer to obtain a wireless link to the router. The computer should 
then appear in the Attached Devices screen.
Note: When configuring the router from a wireless computer whose MAC address is 
not in the Trusted PC list, if you select Turn Access Control On, you lose 
your wireless connection when you click Apply. You must then access the 
wireless router from a wired computer or from a wireless computer that is on 
the access control list to make any further changes.
Wa r n i n g :  MAC address filtering adds an obstacle against unwanted access to your 
network by the general public. However, because your trusted MAC 
addresses appear in your wireless transmissions, an intruder can read them 
and impersonate them. Do not rely on MAC address filtering alone to secure 
your network. 
						

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Changing the Administrator Password
The default password for the router’s Web Configuration Manager is password. NETGEAR 
recommends that you change this password to a more secure password. 
To change the administrator password:
1.On the main menu, under Maintenance, select Set Password to display the Set Password 
screen.
2.To change the password, first enter the old password, then enter the new password twice. 
3.Click Apply.
Tip: Before changing the router password, back up your configuration settings with the 
default password of password. If you save the settings with a new password, and 
then you later forget the new password, you will have to reset the router back to the 
factory defaults, and log in using the default password of password. This means you 
will have to re-enter all the router configuration settings. For information about how 
to back up your settings, see “Backing Up and Restoring the Configuration” on 
page 6-6.
Figure 2-8 
						

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Backing Up Your Configuration
The configuration settings of the Wireless-G Router are stored within the router in a configuration 
file. You can back up (save) this file and retrieve it later. NETGEAR recommends that you save 
your configuration file after you complete the configuration. If the router fails or becomes 
corrupted, or an administrator password is lost, you can easily re-create your configuration by 
restoring the configuration file.
For instructions on saving and restoring your configuration file, see “Managing the Configuration 
File” on page 6-6.
Understanding Your Firewall
Your Wireless-G Router Model WGR614v9 contains a true firewall to protect your network from 
attacks and intrusions. A firewall is a device that protects one network from another while 
allowing communication between the two. Using a process called Stateful Packet Inspection, the 
firewall analyzes all inbound and outbound traffic to determine whether or not it will be allowed to 
pass through.
By default, the firewall allows any outbound traffic and prohibits any inbound traffic except for 
responses to your outbound traffic. However, you can modify the firewall’s rules to achieve the 
following behavior:
•Blocking sites. Block access from your network to certain Web locations based on Web 
addresses and Web address keywords. This feature is described in “Blocking Access to 
Internet Sites” on page 3-1.
•Blocking services. Block the use of certain Internet services by specific computers on your 
network. This feature is described in “Blocking Access to Internet Services” on page 3-3.
•Scheduled blocking. Block sites and services according to a daily schedule. This feature is 
described in “Scheduling Blocking” on page 3-5.
Tip: Before saving your configuration file, change the administrator password to the 
default, password. Then change it again after you have saved the configuration file. 
If you save the file with a new password, and then you later forget the new 
password, you will have to reset the router back to the factory defaults and log in 
using the default password of password. This means you will have to re-enter all the 
router configuration settings. 
						

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•Allow inbound access to your server. To allow inbound access to resources on your local 
network (for example, a Web server or remote desktop program), you can open the needed 
services by configuring port forwarding as described in “Allowing Inbound Connections to 
Your Network” on page 5-1.
•Allow certain games and applications to function correctly. Some games and applications 
need to allow additional inbound traffic in order to function. Port triggering can dynamically 
allow additional service connections, as described in “Allowing Inbound Connections to Your 
Network” on page 5-1. Another feature to solve application conflicts with the firewall is 
Universal Plug and Play (UPnP), described in “Using Universal Plug and Play” on page 5-12.