ZyXEL Communications NVG2053, User Manual

Page: 103 / 200

Chapter 8 Wireless LAN
NVG2053 User’s Guide
103
The following table describes the wireless LAN security labels in this screen.
Table 26 Wireless LAN > General: WPA(2)
LABEL DESCRIPTION
Security Mode Choose WPA or WPA2 from the drop-down list box.
WPA Compatible This field is only available for WPA2. Select this if you want the
NVG2053 to support WPA and WPA2 simultaneously.
Group Key
Update Timer The Group Key Update Timer is the rate at which the RADIUS server
sends a new group key out to all clients.
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 Enabled to turn on
preauthentication in WAP2. Otherwise, select Disabled.
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. The
default port number is 1812.
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 31 alphanumeric characters) as the key to be
shared between the external authentication server and the NVG2053.
The key must be the same on the external authentication server and
your NVG2053. The key is not sent over the network.
Session
Timeout
The NVG2053 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.