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WNHDE111 5GHz Wireless-N HD Access Point/Bridge User Manual
3-8
Making Changes
v1.1, May 2008
Page 37 / 82
4-1
v1.1, May 2008
Chapter 4
Securing My Wireless
The 5 GHz Wireless-N HD Access Point/Bridge WNHDE111 provides highly effective security
features, which are covered in detail in this chapter.
This chapter includes the following sections:
•
“Choosing Appropriate Wireless Security” on page 4-1
•
“Changing Wireless Security Settings” on page 4-4
•
“Viewing Advanced Wireless Settings” on page 4-6
•
“Using Push 'N' Connect (Wi-Fi Protected Setup)” on page 4-7
•
“Enabling Wireless Isolation” on page 4-10
•
“Restricting Wireless Access by MAC Address” on page 4-11
•
“Changing the Administrator Password” on page 4-12
Choosing Appropriate Wireless Security
Unlike wired networks, wireless networks allow anyone with a compatible adapter to receive your
wireless data transmissions well beyond your walls. Operating an unsecured wireless network
creates an opportunity for outsiders to eavesdrop on your network traffic or to enter your network
to access your computers and files. Indoors, computers can connect over 802.11n/a wireless
networks at ranges of up to 500 feet. Such distances can allow for others outside your immediate
area to access your network. Use the security features of your wireless equipment that are
appropriate to your needs.
The time it takes to establish a wireless connection can vary depending on both your security
settings and router placement.
Stronger security methods can entail a cost in terms of throughput, latency, battery consumption,
and equipment compatibility. In choosing an appropriate security level, you can also consider the
effort compared to the reward for a hacker to break into your network. As a minimum, however,
NETGEAR recommends using WEP with Shared Key authentication. Do not run an unsecured
wireless network unless it is your intention to provide free Internet access for the public.
Page 38 / 82
WNHDE111 5GHz Wireless-N HD Access Point/Bridge User Manual
4-2
Securing My Wireless
v1.1, May 2008
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.
To configure the wireless network, you can:
•
Manually specify your SSID and your wireless security settings
. The Wireless-N
AccessPoint/Bridge provides two screens for configuring the wireless settings: the basic
Wireless Settings screen, which you access under Setup in the main menu, and the Advanced
Wireless Settings screen.
•
Use Wi-Fi Protected Setup (WPS) to automatically set the SSID and implement
WPA/WPA2 security on both the router and the client device
. If the clients in your network
are WPS capable, you can use Wi-Fi Protected Setup (WPS) to automatically set the SSID and
implement WPA/WPA2 security on both the bridge and the client device.
Figure 4-1
WNHDE111
1) Open system: easy but no security
2) MAC access list: no data security
3) WEP: security but some performance
impact
4) WPA-PSK: strong security
5) WPA2-PSK: very strong security
Wireless data
security options
Range: up to 500 foot radius
Note:
Use these with other features that enhance security (
Table 4-2 on page 4-3
).
Page 39 / 82
WNHDE111 5GHz Wireless-N HD Access Point/Bridge User Manual
Securing My Wireless
4-3
v1.1, May 2008
Basic security options are listed in order of increasing effectiveness below. For more details on
wireless security methods,
“Wireless Networking Basics” in Appendix B
.
Table 4-1.
Wireless Security Options
Security Type
Description
None
.
No wireless security. Recommended only for troubleshooting wireless
connectivity. Do not run an unsecured wireless network unless it is your
intention to provide free Internet access for the public.
WEP
. Wired Equivalent Privacy.
For more information, see
“Con-
figuring WEP Wireless Security”
on page 4-5
.
Wired Equivalent Privacy (WEP) data encryption provides moderate
data security. WEP Shared Key authentication and WEP data encryption
can be defeated by a determined eavesdropper using publicly available
tools.
WPA-PSK (TKIP)
.
WPA2-PSK (AES)
.
WPA-PSK (TKIP) + WPA2-PSK
(AES)
. Mixed mode.
For more information, see
“Con-
figuring WPA Wireless Security”
on page 4-6
.
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.
Table 4-2.
Other Features That Enhance Security
Security Type
Description
Turn off the broadcast of the
wireless network name SSID.
For more information, see
“View-
ing Advanced Wireless Settings”
on page 4-6
.
If you disable the broadcast of the SSID, only devices that know the
correct SSID can connect. This nullifies the wireless network discovery
feature of some products such as Windows XP, but your data is still fully
exposed to an intruder using available wireless eavesdropping tools.
Restrict access based on MAC
address.
For more information,
see
“Restricting Wireless Access
by MAC Address” on page 4-11
.
You can restrict access to only trusted computers so that unknown
computers cannot wirelessly connect to the Wireless-N AccessPoint/
Bridge. MAC address filtering adds an obstacle against unwanted access
to your network by the general public, but the data broadcast over the
wireless link is fully exposed. This data includes your trusted MAC
addresses, which can be read and impersonated by a hacker.
Use the Push 'N' Connect
feature (Wi-Fi Protected
Setup).
For more information,
see
“Using Push 'N' Connect
(Wi-Fi Protected Setup)” on
page 4-7
.
Wi-Fi Protected Setup provides easy setup by means of a push button.
Older wireless adapters and devices might not support this. Check
whether devices are WPS enabled.
Page 40 / 82
WNHDE111 5GHz Wireless-N HD Access Point/Bridge User Manual
4-4
Securing My Wireless
v1.1, May 2008
Changing Wireless Security Settings
This section describes the wireless settings that you can view and configure in the Wireless
Settings screen, which you access under Setup in the main menu.
Viewing Basic Wireless Settings
To specify the wireless security settings of your router:
1.
Log in to the router as described in
“Viewing or Changing Settings” on page 3-1.
2.
Select
Wireless Settings
under Setup in the main menu.
The available settings in this screen are:
•
Wireless Network Name (SSID)
. Enter a value of up to 32 alphanumeric characters. When
more than one wireless network is active, different wireless network names provide a way to
separate the traffic. For a wireless device to participate in a particular wireless network, it must
be configured with the SSID for that network. The default SSID is
NETGEAR-HD
.
•
802.11 Mode
. You can choose from: Mixed 802.11n and 802.11a; 802.11n only; or 802.11a
only.
Figure 4-2

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