ZyXEL Communications ZyWall USG 50-H Series, Руководство пользователя

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Chapter 8 Interface
ZyWALL USG 50-H User’s Guide
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The following table describes the WPA-PSK/WPA2-PSK-related wireless LAN security labels
in this screen.
8.10.4 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 150 Network > Interface > WLAN > Add (WPA/WPA2 Security)
Table 62 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.
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.
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.