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Page 26 / 90 Scroll up to view Page 21 - 25
Wireless Cable Modem Gateway CGD24G User Manual
2-2
Wireless Configuration
v1.1, May 2009
•
Push 'N' Connect (WPS) automatically implements wireless security on the gateway while, at
the same time, allowing you to automatically implement wireless security on any WPS-
enabled devices (such as wireless computers and wireless adapter cards). You activate WPS by
pressing a WPS button on the gateway, clicking an onscreen WPS button, or entering a PIN
number. This generates a new SSID and implements WPA/WPA2 security.
To set up your wireless network using the WPS feature:
–
Use the WPS button on the side of the gateway (there is also an onscreen WPS button), or
enter the PIN of the wireless device.
–
Make sure that all wireless computers and wireless adapters on the network are
Wi-Fi
certified and WPA or WPA 2 capable, and that they support WPS configuration.
See
“Using Push 'N' Connect (WPS) to Configure Your Wireless Network and Security” on
page 2-10
.
Wireless Placement and Range Guidelines
The range of your wireless connection can vary significantly based on the physical placement of
the gateway. The latency, data throughput performance, and notebook power consumption of
wireless adapters also vary depending on your configuration choices.
For best results, place your gateway according to the following guidelines:
•
Near the center of the area in which your PCs will operate.
•
In an elevated location such as a high shelf where the wirelessly connected PCs have line-of-
sight access (even if through walls).
•
Away from sources of interference, such as PCs, microwave ovens, and 2.4 GHz cordless
phones.
•
Away from large metal surfaces.
•
Put the antenna in a vertical position to provide the best side-to-side coverage. Put the antenna
in a horizontal position to provide the best up-and-down coverage.
Note:
NETGEAR’s Push 'N' Connect feature is based on the Wi-Fi Protected Setup
(WPS) standard (for more information, see
). All other Wi-
Fi-certified and WPS-capable products should be compatible with NETGEAR
products that implement Push 'N' Connect.
Page 27 / 90
Wireless Cable Modem Gateway CGD24G User Manual
Wireless Configuration
2-3
v1.1, May 2009
•
If using multiple access points, it is better if adjacent access points use different radio
frequency channels to reduce interference. The recommended channel spacing between
adjacent access points is 5 channels (for example, use Channels 1 and 6, or 6 and 11).
The time it takes to establish a wireless connection can vary depending on both your security
settings and placement. WEP connections can take slightly longer to establish. Also, WEP
encryption can consume more battery power on a notebook computer.
Wireless Security Options
Indoors, computers can connect over 802.11g wireless networks at a maximum range of up to 300
feet. Such distances can allow for others outside your immediate area to access your network.
Unlike wired network data, your wireless data transmissions can extend beyond your walls and
can be received by anyone with a compatible adapter. For this reason, use the security features of
your wireless equipment. The CGD24G gateway provides highly effective security features which
are covered in detail in this chapter. Deploy the security features appropriate to your needs.
There are several ways you can enhance the security of your wireless network:
•
WEP.
Wired Equivalent Privacy (WEP) data encryption provides data security. WEP Shared
Key authentication and WEP data encryption block all but the most determined eavesdropper.
This data encryption mode has been superseded by WPA-PSK and WPA2-PSK.
•
WPA-PSK (TKIP), WPA2-PSK (AES)
. Wi-Fi Protected Access (WPA) using a pre-shared
key to perform authentication and generate the initial data encryption keys. The very strong
authentication along with dynamic per frame re-keying of WPA makes it virtually impossible
to compromise.
•
Restrict access to your router.
For more information about wireless technology, see the link to the online document in
“Wireless
Networking Basics” in Appendix B
.
Manually Configuring Your Wireless Settings and Security
You can view or manually configure the wireless settings for the gateway in the Wireless Settings
screen. If you want to make changes, make sure to note the current settings first.
Note:
If you use a wireless computer to change the wireless network name (SSID) or
wireless security settings, you will be disconnected when you click
Apply
. To
avoid this problem, use a computer with a wired connection to access the gateway.
Page 28 / 90
Wireless Cable Modem Gateway CGD24G User Manual
2-4
Wireless Configuration
v1.1, May 2009
To view or manually configure the wireless settings:
1.
Log in to the gateway using its default address of
or at whatever IP address
the unit is currently configured.
2.
In the main menu, under Setup, select Wireless Settings. The Wireless Settings screen
displays.
The settings for this screen are explained in
Table 2-1 on page 2-5
.
3.
If you make changes, you must click
Apply
for them to take effect.
Figure 2-1
Page 29 / 90
Wireless Cable Modem Gateway CGD24G User Manual
Wireless Configuration
2-5
v1.1, May 2009
Table 2-1.
Wireless Settings
Settings
Description
Wireless Network
Name (SSID)
The SSID is also known as the wireless network name.
Enter a 32-character (maximum) name in this field. The
characters are case sensitive.
In a setting where there is more than one wireless
network, different wireless network names provide a
means for separating the traffic. Any device you want to
participate in a wireless network must use the SSID.
Channel
The wireless channel used by the gateway. The default is
channel 11.
You should not need to change the wireless channel
unless you experience interference (shown by lost
connections and/or slow data transfers). Should this
happen, you may need to experiment with different
channels to see which is the best.
Wireless Access
Point
Enable Wireless Access
Point
On by default, you can also turn off the wireless radio to
disable access through this device. This can be helpful
for configuration, network tuning, or troubleshooting
activities.
Allow Broadcast Name
(SSID)
On by default, the gateway broadcasts its SSID, allowing
wireless stations which have a “null” (blank) SSID to
adopt the correct SSID. The default SSID is NETGEAR.
If you disable broadcast of the SSID, only devices that
have the correct SSID can connect. This nullifies the
wireless network “discovery” feature of some products
such as Windows XP, but the data is still fully exposed to
a determined snoop using specialized test equipment
like wireless sniffers. For this reason NETGEAR
recommends that you also enable wireless security.
Wireless Card
Access List
Turn Access Control On
Access control is disabled by default so that any
computer that is configured with the correct SSID can
connect. For information about access control, see
“Turning on Access Control to Restrict Access by MAC
Address” on page 2-19
.
Security Options
Disable
Wireless security is disabled by default. After the
gateway is connected to the Internet, NETGEAR strongly
recommends that you implement wireless security.
Page 30 / 90
Wireless Cable Modem Gateway CGD24G User Manual
2-6
Wireless Configuration
v1.1, May 2009
Configuring WEP (Wired Equivalent Privacy) Wireless Security
To configure WEP data encryption:
1.
Log in to the gateway using its default address of
or at whatever IP address
the unit is currently configured. Use the default user name of
admin
and default password of
password
, or the password you have set up.
2.
In the main menu, under Setup, select
Wireless Settings
.
Security Options
(continued)
•
WEP (Wired Equivalent
Privacy) 64-bit encryption
•
WEP (Wired Equivalent
Privacy) 128-bit encryption
WEP security uses encryption keys.
Wired Equivalent Privacy (WEP) data encryption
provides data security. WEP Shared Key authentication
and WEP data encryption will block all but the most
determined eavesdropper.
You can select 64-bit or 128-bit encryption. See
“Configuring WEP (Wired Equivalent Privacy) Wireless
Security” on page 2-6
.
• WPA
•
WPA-PSK (Wi-Fi
Protected Access Pre-
Shared Key)
• WPA2
•
WPA2-PSK (Wi-Fi
Protected Access 2 Pre-
Shared Key)
Wi-Fi Protected Access (WPA) data encryption provides
data security. The very strong authentication along with
dynamic per frame rekeying of WPA make it virtually
impossible to compromise. Because this is a new
standard, wireless device driver and software availability
may be limited.
WPA uses the TKIP encryption type and a
pre-shared key passphrase
WPA-PSK uses the TKIP encryption type with
authentication from a RADIUS server.
WPA2 uses the AES encryption type and a
pre-shared key passphrase.
WPA2-PSK uses the AES encryption type with
authentication from a RADIUS server.
For more information about WPA, see
“Configuring WPA
or WPA2 Wireless Security” on page 2-8
.
Note:
If you use a wireless computer to configure wireless security settings, you will be
disconnected when you click Apply. Reconfigure your wireless computer to match
the new settings, or access the gateway from a wired computer to make further
changes.
Table 2-1.
Wireless Settings (continued)
Settings
Description

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