ZyXEL nbg-5715 Guia Do Utilizador

Chapter 11 Wireless LAN

NBG5715 User’s Guide

The MAC filter screen allows you to configure the NBG5715 to give exclusive access to devices 
(Allow) or exclude devices from accessing the NBG5715 (Deny). Every Ethernet device has a 
unique MAC (Media Access Control) address. The MAC address is assigned at the factory and 
consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. You need to know 
the MAC address of the devices to configure this screen.

Group Key Update 
Timer

The Group Key Update Timer is the rate at which the AP (if using WPA-
PSK/WPA2-PSK key management) or RADIUS server (if using WPA/WPA2 
key management) sends a new group key out to all clients. The re-keying 
process is the WPA/WPA2 equivalent of automatically changing the WEP key for 
an AP and all stations in a WLAN on a periodic basis. Setting of the Group Key 
Update Timer is also supported in WPA-PSK/WPA2-PSK mode. 

PMK Cache Period 

This field is available only when you select WPA2.

Specify how often wireless clients have to resend usernames and passwords in 
order to stay connected. Enter a time interval between 10 and 999999 
minutes. 

Note: If wireless client authentication is done using a RADIUS server, the 

reauthentication timer on the RADIUS server has priority.

Pre-Authentication  This field is available only when you select WPA2.

Pre-authentication enables fast roaming by allowing the wireless client (already 
connecting to an AP) to perform IEEE 802.1x authentication with another AP 
before connecting to it. Select Enable to turn on preauthentication in WAP2. 
Otherwise, select Disable.

Authentication Server

IP Address

Enter the IP address of the external authentication server in dotted decimal 
notation.

Port Number

Enter the port number of the external authentication server.  

You need not change this value unless your network administrator instructs you 
to do so with additional information. 

Shared Secret

Enter a password (up to 127 alphanumeric characters) as the key to be shared 
between the external authentication server and the NBG5715.

The key must be the same on the external authentication server and your 
NBG5715. The key is not sent over the network. 

Session Timeout

The NBG5715 automatically disconnects a wireless client from the wireless and 
wired networks after a period of inactivity. The wireless client needs to send the 
username and password again before it can use the wireless and wired 
networks again. Some wireless clients may prompt users for a username and 
password; other clients may use saved login credentials. In either case, there 
is usually a short delay while the wireless client logs in to the wireless network 
again.

Enter the time in seconds from 0 to 999999.

Apply

Click Apply to save your changes back to the NBG5715.

Reset

Click Reset to reload the previous configuration for this screen.

Network > Wireless LAN > General: WPA/WPA2 (continued)