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36
3
3.
Wireless Settings
Protecting your wireless network
This chapter describes how to use the Wireless Settings screen to view and change (if needed)
your wireless network settings. Security features to prevent objectionable content from reaching
your PCs are covered in
Chapter 4, Security Settings
.
This chapter contains the following sections:
•
Wireless Security Requirements and Recommendations
•
Wireless Security Basics
•
Add Clients (Devices) to Your Network
•
Wireless Settings Screen
Note:
If you use the Internet for activities like purchases or banking, those
Internet sites use a highly secure data encryption protocol called
Secure Sockets Layer (SSL). If a website uses SSL, the address
begins with https instead of http. If you do not see https, it is more
secure to do your business in person or over the phone.
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Page 37 / 185
Wireless Settings
37
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
Wireless Security Requirements and Recommendations
You should set the following security:
•
Wi-Fi network name (SSID)
identifies your network so devices can find it.
-
The default SSID for the 2.4 GHz wireless network is NETGEAR.
-
The default SSID for the 5 GHz wireless is NETGEAR-5G.
•
Security option
is the type of security protocol 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. The recommended security
option is WPA-PSK/WPA2-PSK mixed mode, described in
Wireless Security Options
on
page 38.
•
Passphrase
controls access to your network. Devices that know the SSID and the
passphrase can find your wireless network and connect.
-
Use a passphrase for the 2.4 GHz wireless network that is easy for you to remember,
but hard for others to guess.
-
For maximum security, use a different passphrase for the 5 GHz wireless network that
is easy for you to remember, but hard for others to guess.
Note:
Your network names (SSIDs) and passphrases are case-sensitive.
Your network name, security method, and passphrase has to be the
same for all the wireless devices connected to your router on a
network.
Wireless Security Basics
Unlike wired network data, wireless data transmissions extend beyond your walls and can be
received by any device with a compatible wireless adapter (radio). For this reason, it is very
important to maintain the preset security and understand the other security features available
to you. Besides the preset security settings described earlier, your wireless modem router
has the security features described here and in
Chapter 4, Security Settings
.
•
Turn off wireless connectivity
•
Disable SSID broadcast
•
Restrict access by MAC address
•
Wireless security options
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Page 38 / 185
Wireless Settings
38
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
Turn Off Wireless Connectivity
You can completely turn off the wireless connectivity of the wireless modem router by
pressing the Wireless On/Off button on its front panel
. For example, if you use your
notebook computer to wirelessly connect to your wireless modem router and you take a
business trip, you can turn off the wireless portion of the modem router while you are
traveling. Other members of your household who use computers connected to the wireless
modem router through Ethernet cables can still use the wireless modem router.
Disable SSID Broadcast
By default, the wireless modem router broadcasts its Wi-Fi network name (SSID) so devices
can find it. If you change this setting to not allow the broadcast, wireless devices will not find
your wireless modem router unless they are configured with the same SSID. See
Wireless
Access Point Settings
on page 44 for the procedure.
Note:
Turning off SSID broadcast 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. If you allow the broadcast, be sure
to keep wireless security enabled.
Restrict Access by MAC Address
You can enhance your network security by allowing access to only specific PCs based on
their Media Access Control (MAC) addresses. You can restrict access to only trusted PCs so
that unknown PCs cannot wirelessly connect to the wireless modem router. MAC address
filtering adds an obstacle against unwanted access to your network, but the data broadcast
over the wireless link is fully exposed (unencrypted).The Wireless Station Access List
determines which wireless hardware devices are allowed to connect to the wireless modem
router by MAC address. See
Wireless Station Access List Settings
on page 44 for the
procedure.
Wireless Security Options
A security option is the type of security protocol 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. There are two types of encryption: Wired
Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA). WPA has several options
including pre-shared key (PSK) encryption and 802.1x encryption for enterprises.
This section presents an overview of the security options and provides guidance on when to
use which option. Note that it is also possible to disable wireless security. NETGEAR does
not
recommend this.
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Page 39 / 185
Wireless Settings
39
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
WEP Encryption
WEP uses an old encryption method and can be easily decoded with today’s powerful
computers. Use this mode only when you have a very old legacy wireless client that does not
support WPA-PSK. The Wi-Fi alliance highly recommends against using WEP and plans to
make it obsolete. If you do decide to use WEP, see
Set WEP Encryption and Passphrase:
on
page 46 for the procedure.
WPA Encryption
WPA encryption is built into all hardware that has the Wi-Fi-certified seal. This seal means
the product is authorized by the Wi-Fi Alliance (
) because it complies with
the worldwide single standard for high-speed wireless local area networking. For information
about how to use the WPA home options, see
Change WPA Security Option and
Passphrase:
on page 46.
WPA-PSK uses a much stronger encryption algorithm than WEP so it is harder to decode.
This option uses a passphrase to perform the 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, implements most of the IEEE 802.11i standard, and
is designed to work with all wireless network interface cards, but not all wireless access
points. It is superseded by WPA2-PSK.
WPA2-PSK is the strongest. 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 usually implemented through hardware, while WPA-PSK is usually
implemented through software. WPA2-PSK uses a passphrase to authenticate and generate
the initial data encryption keys. Then it dynamically varies the encryption key.
WPS-PSK + WPA2-PSK mixed mode is the preconfigured security mode on the wireless
modem router. NETGEAR recommends mixed mode because it provides 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 should have instructions about configuring their WPA settings.
WPA-802.1x is enterprise-level security and requires an authentication server to recognize
and authorize client access. The authentication server is called Remote Authentication Dial
In User Service (RADIUS). Every wireless client has a user login on the RADIUS server, and
the wireless modem router has a client login on the RADIUS server. Data transmissions are
encrypted with an automatically generated key. For information about how to use the WPA
enterprise option, see
Set WPA-802.1x Server and Passphrase:
on page 46.
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Page 40 / 185
Wireless Settings
40
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700
Add Clients (Devices) to Your Network
Choose either the manual or the WPS method to add wireless devices, including guest
devices, and other equipment to your wireless network.
Manual Method
To add clients (devices) to your network manually:
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 router. 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 Wi-Fi network name (SSID) and select it. The default
Wi-Fi network name (SSID) is located on the product label on the bottom of the router.
3.
Enter the wireless modem router passphrase and click
Connect
. The default wireless
modem router passphrase is located on the product label on the bottom of the router.
4.
Repeat steps 1–3 to add other wireless devices.
Wi-Fi Protected Setup (WPS) Method
Wi-Fi Protected Setup (WPS) is a standard for easily adding computers and other devices to
a home network while maintaining security. To use WPS, make sure that all wireless devices
to be connected to the network are Wi-Fi certified and support WPS. During the connection
process, the client gets the security settings from the router so that every device in the
network has the same security settings.
Note:
However, if you find that the router is generating new security
settings for each added device, it means that the default value for
Keep Existing Wireless Settings has changed. See
WPS Settings
on
page 131 for more information about this setting.
All Wi-Fi-certified and WPS-capable products are compatible with the NETGEAR products
that have Push 'N' Connect, which is based on WPS.
1
For information about how to view a
list of all wireless and wired devices connected to your modem router, see
View Attached
Devices
on page 72.
Note:
WEP security does not support WPS. If you try to use WPS to
connect a WEP device to your network, it will not connect.
1. For a list of other Wi-Fi-certified products available from NETGEAR, go to
.
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