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Page 26 / 85 Scroll up to view Page 21 - 25
20
Chapter 5: Configuring the Wireless-G Broadband Router
The Wireless Tab - Basic Wireless Settings
Wireless-G Broadband Router with SRX200
The Wireless Tab - Basic Wireless Settings
The basic settings for wireless networking are set on this screen.
Wireless Network
Wireless Network Mode
. From this drop-down menu, you can select the wireless standards running on your
network. If you have both 802.11g and 802.11b devices in your network, keep the default setting,
Mixed
. If you
have only 802.11g devices, select
G-Only
. If you do not have any 802.11g and 802.11b devices in your network,
select
Disable
. SRX200 works automatically with Mixed or G-Only mode, providing the added bonus of increased
speed across your entire network and even greater speed when using SRX-enabled products only.
Wireless Network Name (SSID)
. The SSID is the network name shared among all points in a wireless network.
The SSID must be identical for all devices in the wireless network. It is case-sensitive and must not exceed 32
characters (use any of the characters on the keyboard). Make sure this setting is the same for all points in your
wireless network. For added security, you should change the default SSID (
linksys
) to a unique name.
Wireless Channel
. Select the appropriate channel from the list provided to correspond with your network
settings. All devices in your wireless network must be broadcast on the same channel in order to function
correctly and to avoid interference with other wireless items in your home. In most cases, you should keep the
default,
Auto
, so the Router will automatically use the channel that has the least activity.
Adaptive Channel Expansion
. This feature increases the RF (radio frequency) bandwidth, so data rates are
increased. The existing 20 MHz bandwidth is increased to up to 40 MHz by combining adjacent channels. In most
cases, keep the default setting,
Auto
, so the Router automatically adjusts the increase depending on the
channels available.
Wireless SSID Broadcast
. When wireless clients survey the local area for wireless networks to associate with,
they will detect the SSID broadcast by the Router. To broadcast the Router's SSID, keep the default setting,
Enable
. To be more secure and not broadcast the Router's SSID, then select
Disable
.
Change these settings as described here and click the
Save Settings
button to apply your changes or
Cancel
Changes
to cancel your changes.
Figure 5-17: Wireless Tab - Basic Wireless Settings
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Page 27 / 85
21
Chapter 5: Configuring the Wireless-G Broadband Router
The Wireless Tab - Wireless Security
Wireless-G Broadband Router with SRX200
The Wireless Tab - Wireless Security
The Wireless Security settings configure the security of your wireless network. There are five wireless security
mode options supported by the Router: WPA-Personal, WPA2 Personal, WPA Enterprise, WPA2 Enterprise, and
WEP. (WPA stands for Wi-Fi Protected Access, WEP stands for Wired Equivalent Privacy, and WPA Enterprise uses
a RADIUS (Remote Authentication Dial-In User Service) server. WPA is a security standard stronger than WEP
encryption. WPA2 is stronger than WPA. These options are briefly discussed here. For detailed instructions on
configuring wireless security for the Router, turn to “Appendix B: Wireless Security.”
Wireless Security
Select
WPA/WPA2 Personal
,
WPA/WPA2 Enterprise
, or
WEP
from the
Security Mode
drop-down menu. Then
proceed to the appropriate instructions. If you do not want to enable wireless security, select
Disable
.
WPA/WPA2 Personal
. Two WPA Personal options are available. To select WPA or WPA2 Personal, select
Enable
from the drop-down menu next to the desired option. WPA/WPA2 Personal gives you two encryption methods,
TKIP and AES, with dynamic encryption keys. Select the type of algorithm,
TKIP
or
AES
. Enter a Personal Key of
8-63 characters. Then enter a Group Key Renewal period, which instructs the Router how often it should change
the encryption keys.
WPA/WPA2 Enterprise
. This option features WPA/WPA2 used in coordination with a RADIUS server. (This should
only be used when a RADIUS server is connected to the Router.) Two WPA Enterprise options are available. To
select WPA or WPA2 Enterprise, select
Enable
from the drop-down menu next to the desired option. Then, select
the type of WPA algorithm you want to use,
TKIP
or
AES
. Enter the RADIUS server’s IP Address and port number,
along with an Enterprise Key shared between the Router and the server. Last, enter a Key Renewal Timeout,
which instructs the Router how often it should change the encryption keys.
Figure 5-18: Wireless Tab - Wireless Security (WPA/WPA
Personal)
Figure 5-19: Wireless Tab - Wireless Security
(WPA/WPA2 Enterprise)
IMPORTANT:
If you are using wireless security, always remember that
each device in your wireless network MUST use the same wireless security
method and shared key, or else the network will not function correctly. You
may mix between WPA and WPA2 Personal or WPA and WPA2 Enterprise,
but not between Personal and Enterprise, Personal and WEP, or Enterprise
and WEP.
encryption
: encoding data transmitted in a network
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Page 28 / 85
22
Chapter 5: Configuring the Wireless-G Broadband Router
The Wireless Tab - Wireless Security
Wireless-G Broadband Router with SRX200
WEP
. WEP is a basic encryption method, which is not as secure as WPA or WPA2. To use WEP, select a Default
Transmit Key (choose which Key to use), and a level of WEP encryption,
64 bits 10 hex digits
or
128 bits 26 hex
digits
. Then either generate a WEP key using the Passphrase or enter the WEP key manually.
Change these settings as described here and click the
Save Settings
button to apply your changes or
Cancel
Changes
to cancel your changes. For detailed instructions on configuring wireless security for the Router, turn to
“Appendix B: Wireless Security.”
Figure 5-20: Wireless Tab - Wireless Security (WEP)
IMPORTANT:
If you are using wireless security, always remember that
each device in your wireless network MUST use the same wireless security
method and shared key, or else the network will not function correctly. You
may mix between WPA and WPA2 Personal or WPA and WPA2 Enterprise,
but not between Personal and Enterprise, Personal and WEP, or Enterprise
and WEP.
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23
Chapter 5: Configuring the Wireless-G Broadband Router
The Wireless Tab - Wireless MAC Filter
Wireless-G Broadband Router with SRX200
The Wireless Tab - Wireless MAC Filter
Wireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your
network.
Wireless MAC Filter
Wireless MAC Filter
. This screen lets you filter wireless users by MAC Address. If you do not wish to filter users
by MAC Address, select
Disable
.
Permit Only
. Clicking this button will allow wireless access by computers with specified MAC Addresses.
There are 50 fields provided in which you can list users, by MAC Address, whose access you wish to allow. Just
enter the MAC Address for the PC whose access you want to allow in one of the fields. For a more convenient way
to add MAC addresses, click the
Select
MAC Address From Networked Computers
button. The
Networked
Computers
screen will appear. Select the MAC Addresses you want. Then click the
Select
button. Click the
Refresh
button if you want to refresh the screen. Click the
Close Window
button to return to the previous screen.
Change these settings as described here and click the
Save Settings
button to apply your changes or
Cancel
Changes
to cancel your changes.
Figure 5-21: Wireless Tab - Wireless MAC Filter
Figure 5-22: Wireless MAC Filter - Networked
Computers
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Page 30 / 85
24
Chapter 5: Configuring the Wireless-G Broadband Router
The Wireless Tab - Advanced Wireless Settings
Wireless-G Broadband Router with SRX200
The Wireless Tab - Advanced Wireless Settings
This tab is used to set up the Router’s advanced wireless functions. These settings should only be adjusted by an
expert administrator as incorrect settings can reduce wireless performance.
Advanced Wireless
Basic Rate Set
. The Basic Rate is not the actual rate of data transmission; it is a series of rates at which the
Router can transmit. (If you want to specify the Router’s rate of data transmission, configure the Transmission
Rate setting.) The Router will advertise its Basic Rate Set to the other wireless devices in your network, so they
know which rates will be supported. The Router will also advertise that it will automatically select the best rate
for transmission. In most cases, you should keep the default setting,
Basic Rate Set #2
, which includes higher
data rates for higher performance. If your wireless computers or other clients cannot associate with the Router,
select
Basic Rate Set #1
, a set of data rates specified by the 802.11b standard.
Transmission Rate
. The rate of data transmission should be set depending on the speed of your wireless
network. You can select from a range of transmission speeds, or you can select
Auto
to have the Router
automatically use the fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will
negotiate the best possible connection speed between the Router and a wireless client. The default value is
Auto
.
CTS Protection Mode
. CTS (Clear-To-Send) Protection Mode should remain set to its default,
Auto
, so when your
Wireless-G products are not able to transmit to the Router in an environment with heavy 802.11b traffic, the CTS
Protection Mode will be used. This function boosts the Router’s ability to catch all Wireless-G transmissions but
will severely decrease performance.
Beacon Interval
. The default value is
100
. Enter a value between 1 and 65,535 milliseconds. The Beacon Interval
value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Router to synchronize
the wireless network.
DTIM Interval
. This value, between 1 and 255, indicates the interval of the Delivery Traffic Indication Message
(DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and
multicast messages. When the Router has buffered broadcast or multicast messages for associated clients, it
sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast
and multicast messages. The default value is
1
.
Fragmentation Threshold
. This value specifies the maximum size for a packet before data is fragmented into
multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation
Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor
reduction of the default value is recommended. In most cases, it should remain at its default value of
2346
.
Figure 5-23: Wireless Tab - Advanced Wireless Settings
fragmentation
: breaking a packet into smaller units
when transmitting over a network medium that
cannot support the original size of the packet.
cts
(clear to send): a signal sent by a wireless
device, signifying that it is ready to receive data
beacon interval
: data transmitted on your wireless
network that keeps the network synchronized
dtim
: a message included in data packets
that can increase wireless efficiency.
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