ZyAIR B-4000 Spot Gateway

 

Table 18-1 WIRELESS

 

 

LABEL

DESCRIPTION

 

 

Authentication

Select Open System to allow any device to authenticate and then attempt to

Type

communicate with the ZyAIR. Using open authentication, any wireless device can

 

authenticate with the ZyAIR, but the device can only communicate if its WEP keys match

 

the ZyAIR. Devices not using WEP do not attempt to authenticate with a ZyAIR that is

 

using WEP. Open authentication does not rely on a RADIUS server on your network.

 

Select Shared Key to have the ZyAIR use shared key authentication. The ZyAIR sends

 

an unencrypted challenge text string to any device attempting to communicate with the

 

ZyAIR. The device-requesting authentication encrypts the challenge text and sends it

 

back to the ZyAIR. If the challenge text is encrypted correctly, the ZyAIR allows the

 

requesting device to authenticate. However, both the unencrypted challenge and the

 

encrypted challenge can be monitored; thus leaving the ZyAIR open to attack from an

 

intruder who calculates the WEP key by comparing the unencrypted and encrypted text

 

strings. Because of this weakness, shared key authentication can be less secure than

 

open authentication. Like open authentication, shared key authentication does not rely

 

on a RADIUS server on your network.

 

Select Both to allow subscribers to communicate with or without data encryption.

 

 

SSID Broadcast

Select Enable to allow devices that do not specify an SSID (Service Set Identity) to

 

associate with the ZyAIR.

 

Select Disable to stop devices that do not specify an SSID (devices that are

 

"broadcasting" in search of an access point to associate with) from associating with the

 

ZyAIR. The SSID on the subscriber’s device must match the ZyAIR's SSID exactly.

 

 

Default

Click this button to load the factory default wireless LAN settings.

 

 

Apply

Click Apply to save the settings.

 

 

18.3.1 Configuring WEP Keys

When you select Mandatory in the WEP Encryption field in the Wireless screen, click WEP Key Setting to display the screen as shown.

18-8

Wireless LAN