ZyXEL Communications 200 Series Benutzerhandbuch

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 Chapter 10 Interface
ZyWALL USG 100/200 Series User’s Guide
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The following table describes the WPA-PSK/WPA2-PSK-related wireless LAN security 
labels in this screen.
10.9.4  WLAN Add/Edit Screen: WPA/WPA2 Security
With WPA or WPA2 security, each user can have a separate user name and password. The 
ZyWALL uses an external RADIUS server or the ZyWALL’s internal user account list to 
authenticate the user names and passwords. To configure and enable WPA or WPA2 security, 
click Network > Interface > WLAN > Add (or Edit) to open the WLAN Edit screen. Select 
WPA-Enterprise or WPA2-Enterprise as the Security Type. The following figure shows 
the security fields.
Figure 171   Network > Interface > WLAN > Add (WPA/WPA2 Security) 
Table 69   Network > Interface > WLAN > Add (WPA-PSK/WPA2-PSK Security)
LABEL
DESCRIPTION
Pre-Shared Key
The encryption mechanisms used for WPA and WPA-PSK are the same. The only 
difference between the two is that WPA-PSK uses a simple common password, 
instead of user-specific credentials.
Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including 
spaces and symbols).
ReAuthentication 
Timer
Specify how often wireless stations have to resend usernames and passwords in 
order to stay connected. 
The default time interval is 1800 seconds (30 minutes). Alternatively, enter “0” to 
turn reauthentication off. 
Note: If a RADIUS server authenticates wireless stations, the 
reauthentication timer on the RADIUS server has priority. 
Idle Timeout
The ZyWALL automatically disconnects a wireless station from the wired network 
after a period of inactivity. The wireless station needs to enter the username and 
password again before access to the wired network is allowed. 
The default time interval is 3000 seconds.
Group Key 
Update Timer
The Group Key Update Timer is the rate at which the AP sends a new group key 
out to all clients. The re-keying process is the WPA equivalent of automatically 
changing the group 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 mode. The 
ZyWALL’s default is 1800 seconds (30 minutes).