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Page 36 / 96 Scroll up to view Page 31 - 35
108 Mbps Wireless Router WGT624 v4 Reference Manual
2-6
Wireless Settings and Security
v1.0, May 2007
Understanding Wireless Security
To protect your network from unauthorized access, use the security features of your wireless
equipment.
There are several ways you can enhance the security of you wireless network.
•
Restrict access based on MAC (Media Access Control) address.
You can restrict access to
only trusted computers so that unknown computers cannot wirelessly connect to the
WGT624 v4. MAC address filtering adds an obstacle against unwanted access to your
network, but the data broadcast over the wireless link is fully exposed.
•
Turn off the broadcast of the wireless network name (SSID).
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.
Warning:
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
of your immediate area to access your network.
Figure 2-2
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4) 7%0: 3ECURITY BUT SOME PERFORMANCE IMPACT
:LUHOHVV 'DWD
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5DQJH= 8S WR 633 )RRW 5DGLXV
5) 70!603+:
3TRONG SECURITY
8)
70!2603+:
9ERY STRONG SECURITY
WGT624 v4
Page 37 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
Wireless Settings and Security
2-7
v1.0, May 2007
•
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.
•
Wi-Fi Protected Access—Pre-Shared Key (WPA-PSK
and
WPA2-PSK).
Provide strong
data security. WPA-PSK and WPA2-PSK will block eavesdropping. Because these are new
standards, wireless device driver and software availability may be limited.
•
Turn off the wireless LAN.
If you disable the wireless LAN, wireless devices cannot
communicate with the router at all. You might choose to turn off the wireless the LAN when
you are away and the others in the household all use wired connections.
Wireless Security Options
The following table identifies the basic wireless security options on the Wireless Settings page.
For a link to a full explanation of these standards, see
“Wireless Communications” in Appendix B
.
Wireless Security
Option Field
Description
None
No wireless security.
WEP
WEP offers the following options:
•
Open System
With Open Network Authentication and 64- or 128-bit WEP Data Encryption,
the WGT624 v4 does perform 64- or 128-bit data encryption but does not
perform authentication.
•
Shared Key
Shared Key authentication encrypts the SSID and data. Not all wireless
adapter configuration utilities support passphrase key generation.
• Auto
The wireless router automatically detects whether Open System or Shared
Key is used.
WPA-PSK WPA2-PSK
•
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
dynamically change the encryption keys, making them nearly impossible to
circumvent.
Page 38 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
2-8
Wireless Settings and Security
v1.0, May 2007
WEP Wireless Security
When you are setting up wireless security, these guidelines will help make the process simpler and
easier:
•
Use an Ethernet cable to connect your computer to the router when you are setting up or
changing wireless settings. If you are connected wirelessly and you set up the wireless
security, you will lose your wireless connection when you apply the change.
•
Remember to note what your wireless settings are. For help keeping track of them, see
“Information to Gather Before Changing the Wireless Settings” on page 2-3
.
Setting Up WEP
To set up Wired Encryption Protocol (WEP) wireless security:
1.
Log in to the WGT624 v4 wireless router at its default LAN address of
with
its default user name of
admin
and default password of
password
, or using whatever LAN
address and password you have set up.
2.
Click the Wireless Settings link in the Setup section of the main menu.
Note:
Before setting up wireless security, verify that your wireless connections are set up
and working. See
“Setting Up Your Wireless Connections” on page 2-2
.
Note:
For instructions for configuring wireless computers or personal digital assistants
(PDAs) for WEP, see the documentation for the product you are using.
Page 39 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
Wireless Settings and Security
2-9
v1.0, May 2007
3.
In the Security Options section, select WEP. The WEP options display.
4.
Select the Authentication Type.
The default setting is Automatic, which usually works. If it does not, select Open System or
Shared Key. Check your wireless card’s documentation to see which method to use.
5.
From the Security Encryption drop-down list, select the WEP encryption strength.
Figure 2-3
Note:
64-bit WEP encryption strength is sometimes referred to as 40-bit encryption.
Page 40 / 96
108 Mbps Wireless Router WGT624 v4 Reference Manual
2-10
Wireless Settings and Security
v1.0, May 2007
6.
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. Enter a word or group of printable characters for the Passphrase, and then click
Generate. The passphrase is case-sensitive; NETGEAR is not the same as nETgear. The
four key boxes will be automatically populated with key values.
•
Manual. Select which of the four keys will be active and enter ten hexadecimal digits (any
combination of 0-9, a-f, or A-F).
See
“Wireless Communications” in Appendix B
for a link to a document on the NETGEAR
Web site that contains a full explanation of each of these options, as defined by the IEEE
802.11 wireless communication standard.
7.
Click
Apply
to save your settings.
Figure 2-4
Tip:
If you were connected wirelessly to the router, you lost the wireless connection
when you clicked Apply. Now you must change the wireless security settings
for your computer to match the router settings. Then you will be able to connect
to the router.

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