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Page 56 / 112 Scroll up to view Page 51 - 55
Configuring Your Gateway
56
SMCD3GN2 Wireless Cable Modem User Manual
Wireless Encryption Settings Menu
Using the Wireless Encryption Settings menu, you can protect the data transmitted across
your wireless network. The same encryption keys you specify here must also be configured
on your other wireless client devices on your wireless network.
To access the Wireless Encryption Settings menu, click
Wireless
in the menu bar and then
click the
Encryption
submenu. Figure 31 shows an example of the menu and Table 10
describes the settings you can select.
Note:
The
Encryption
submenu is not available in the menu bar if wireless operation is
disabled in the Wireless Basic Settings menu (see page 54).
Figure 31. Wireless Encryption Settings Menu
Page 57 / 112
Configuring Your Gateway
57
SMCD3GN2 Wireless Cable Modem User Manual
Table 10. Wireless Encryption Settings Menu Options
Option
Description
SSID
Network name of the of the primary wireless carrier. This field can be changed by administrators, but
not by users.
Security Mode
Selects the security mode used to protect transmissions across the wireless network.
•
None = no security is used over the wireless network.
•
WEP = Wired Equivalency Privacy encryption is used over the wireless network. Select this option
if your wireless adapters support WEP but not WPA-Personal. WEP provides basic security, but is
not as secure as WPA-Personal. If you select WEP, select the options in Figure 32 and Table 11.
•
WPA-Personal = select this option if your wireless adapters support WPA-Personal. This
encryption method is superior to WEP and offers two cipher types, TKIP and AES, with dynamic
encryption keys. If you select WPA-Personal, select the options in Figure 33 and Table 12.
(
default
)
Page 58 / 112
Configuring Your Gateway
58
SMCD3GN2 Wireless Cable Modem User Manual
Figure 32. WEP Options
Table 11. WEP Options
Option
Description
WEP Key Length
Level of WEP encryption applied to all WEP keys. Choices are 64-bit (10 hex digits) and 128-bit (26
hex digits).
WEP Key 1 – WEP Key 4
Fields for entering up to four WEP keys manually. Alternatively, you can click the Generate Keys
button to generate these keys automatically.
Default WEP Key
Specifies which of the four WEP keys the Gateway is to use as its default.
Authentication
Authentication used. Choices are:
•
Open System = clients can only associate to the wireless access point using Open Option.
(
default
)
•
Shared Key = all wireless stations share the same secret key.
•
Automatic = clients can associate to the wireless access point using Open System or Shared Key.
Passphrase
A sequence of words or text that can be used to automatically generate WEP keys. A passphrase
can consist of from 8 to 63 ASCII characters. You can use upper-case, lower-case, and numeric
characters to from your passphrase. A Generate Keys button next to this field lets the Gateway
generate a passphrase based on the characters typed in this field.
Page 59 / 112
Configuring Your Gateway
59
SMCD3GN2 Wireless Cable Modem User Manual
Figure 33. WPA_Personal Options
Table 12. WPA_Personal Options
Option
Description
WPA Mode
Lets you select the WPA mode they want to use. Choices are:
•
WPA-PSK = select this setting if your access points and wireless clients support WPA-Pre-Shared
Key (PSK) Authentication.
•
WPA2-PSK = select this setting if your access points and wireless clients support WPA2-PSK
Authentication.
•
Auto (WPA-PSK or WPA2-PSK) = select this setting if your access points and wireless clients
support either WPA-PSK or WPA2-PSK. (
default
)
Cipher type
Algorithm encryption to be used. Choices are:
•
TKIP = automatic encryption with WPA-PSK; requires pre-shared key.
•
AES = automatic encryption with WPA2-PSK; requires pre-shared key.
•
TKIP and AES = uses both TKIP and AES cipher types; requires pre-shared key. (
default
)
Group Key Update Interval
Number of seconds that instructs the Gateway how often it should change the encryption keys.
Usually the security level is higher if you set the period shorter to change encryption keys more often.
Default value is 3600 seconds (6 minutes). Type 0 to disable group key update interval.
Pre-shared Key
Shared secret between the Gateway and access points and wireless clients. Please check whether a
default pre-shared key is required.
Pre-Authentication
Enables secure fast roaming, without noticeable signal latency. By default, this option is disabled.
Page 60 / 112
Configuring Your Gateway
60
SMCD3GN2 Wireless Cable Modem User Manual
WPS Setup
Using the WPS Setup menu, you can enable or disable WPS. WPS is a standard for easy
and secure wireless network set up and connections.
The advantages of WPS are:
y
WPS automatically configures the network name (SSID) and WPA security key for the
Gateway and for the access point and wireless devices that join the network.
y
You do not need to know the network name and security keys or passphrases to use
WPS to join a wireless network.
y
No one can guess your security keys or passphrase because they are generated
randomly.
y
WPS uses the Extensible Authentication Protocol (EAP), which is a strong authentication
protocol used in WPA2.
The disadvantages of WPS are:
y
Unless all the Wi-Fi devices on the network are WPS-compatible, you cannot take
advantage of the ease of securing the network.
y
Not all wireless equipment supports WPS.
y
If your wireless devices do not support WPS, it can be hard to join a network that was
set up with WPS because the wireless network name and security key are random
sequences of letters and numbers.
To access the WPS Setup menu, click
Wireless
in the menu bar and then click the
WPS
submenu. Figure 34 shows an example of the menu. Using the
WPS Config
drop-down list,
select the appropriate option to enable or disable WPS setup.

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