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The Wireless Settings menu provides options described in the following
sections.
To improve the security of your wireless network, 3 Com recommends
that you:
1.Change the SSID from its default value
2.Enable Encryption
3.Enable Connection Control
Wireless Settings
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LAN Settings
51
Figure 34
Configuration Screen
Enable Wireless Networking
Use this check box to enable or disable the wireless secion of your LAN.
When disabled, no wireless PCs can gain access to either the internet or
other PCs on your Wired or Wireless LAN through this Router.
Channel Selection
Select a number from the drip-down list to specify which Channel the
Router will transmit and receive on. If another access point or Router
nearby is using the same Channel as you, there will be a reduction in the
performance of your network. If this seems to be the case, you should
select a different channel number. Usually the Wireless computers will
scan to find the correct channel, but if they don't you must configure
them to use the same Channel number as the Router.
Choose the
Clear Channel Select
option to automatically choose the
clearest channel. The Router will check for the clearest channel whenever
it is rebooted, powered up, and when the
Clear Channel Select
option is
first applied.
Valid channels are country dependent.
Configuration
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Service Area Name/SSID
This allows you to name your Wireless network. The
Service Area
Name/SSID
field will accept any alphanumeric string and has a maximum
length of 32 characters. Your Wireless computers must be configured
with exactly the same name or you will not establish a connection. The
Service Area Name may also be referred to as "ESSID" depending on your
networking vendor. By default the Router uses the name "3Com". 3Com
recommends that you change the default name.
In order that your wireless computers can connect to the Router, you
must:
Use Infrastructure Mode not Ad hoc Mode
Have the same Service Area Name as the Router.
Have the same Channel number as the Router.
Use the same encryption type and keys as the Router.
Ensure that the PC is included in the aouthorized Wireless PCs list if
Connection Control is enabled.
Enable Broadcase SSID
Disable this feature after you have installed your wireless network to
improve the security of your network. When the check box is checked,
the Router will broadcast the Service Area Name/SSID of your wireless
network, whick reduces the security of your Router as it allows any
wireless client to see your wireless LAN.
If you have a wireless client that can detect all the available SSIDs in your
area, your client will not list the Router SSID unless this feature is enabled.
THe clients will still be able to connect, provided that they are supplied
with the SSID.
3Com recommends that you install your wireless network with this
feature enabled and than disable it once you have set up the Router and
wireless clients.
SSID
If required, enter a name that you want to use to uniquely identify the
device at the
SSID
prompt.
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LAN Settings
53
Encryption
When setting up wireless networks, it is important to remember that with
encryption disabled, anyone with a Wireless PC can eavesdrop on your
network. 3Com recommends that you get the network working with
encryption disabled first and then enable it as the last step. This will
simplify setting up your network.
You can configure wireless security such as WEP or WPA encryption on
this screen.
Note
: it is recommended that you use WPA encryption over
WEP if your wireless clients support WPA All of the wireless clients must
use the same security settings in order to connecdt to the router.
WPA — Wi-Fi Protected Access (WPA) is a 256 bit encryption method
with keys that change over time.
WEP — Wireless Equivalent Privacy (WEP) is a 64 bit or 128 bit
encryption method with user configurable fixed keys.
WPA provides a higher level of security, provided by its longer key and
dynamic changes made to the key over time. 3Com recommends that
you use WPA with any clients which support it.
If you enable encryption on the Router, you must reconfigure your
wireless PCs to use exactly the same Encryption Type and Keys otherwise
the devices will not understand each other.
The encryption methods used by the Router secure data transmitted
through wireless communications between the Router and its wireless
clients. Enabling encryption has no security effect on data transmitted
through wired (Ethernet) connections or through your connections to the
Internet.
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WEP
To enable WEP, select
WEP
from the
Security Mode
.
Encryption
: Choose from
64 bits
or
128 bits
Passphrase
:You can enter a passphrase and click on the
Generate
button and the router will automatically generate four WEP keys for you.
WEP Key1-4
:Manaually assign a passphrase for each key. If you selected
64 bits
encryption, enter
10
HEX characters (0-F) for each key. If you
selected
128 bits
encrtpyion,enter
26
HEX characters (0-F) for each key.
TX Key
:Select a key to be the active key.
Click
Save
to save the setting

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