3Com 3CRWER200-75 Router Manual PDF (Setup & Configuration Guide)

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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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