ZyXEL ZyWALL 5 User Guide - Page 236
WPA-PSK, Security
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Chapter 12 Wireless Screens Figure 132 WIRELESS > Wi-Fi > Wireless Card: WPA-PSK 236 The following wireless LAN security fields become available when you select WPA-PSK in the Security drop down list-box. Table 60 WIRELESS > Wi-Fi > Wireless Card: WPA-PSK LABEL DESCRIPTION Security Select WPA-PSK from the drop-down list. 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 (Seconds) Specify how often wireless stations have to resend user names and passwords in order to stay connected. Enter a time interval between 10 and 65535 seconds. If wireless station authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority. Idle Timeout (Seconds) The ZyWALL automatically disconnects a wireless station from the wireless network after a period of inactivity. The wireless station needs to send the username and password again before it can use the wireless network 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. This value is usually smaller when the wireless network is keeping track of how much time each wireless station is connected to the wireless network (for example, using an authentication server). If the wireless network is not keeping track of this information, you can usually set this value higher to reduce the number of delays caused by logging in again. WPA Group Key Update Timer (Seconds) The WPA Group Key Update Timer is the rate at which the AP (if using WPAPSK key management) or RADIUS server (if using WPA key management) sends a new group key out to all clients. The re-keying process is the WPA equivalent of automatically changing the WEP key for an AP and all stations in a WLAN on a periodic basis. Setting of the WPA Group Key Update Timer is also supported in WPA-PSK mode. Apply Click Apply to save your changes back to the ZyWALL. Reset Click Reset to begin configuring this screen afresh. ZyWALL 5/35/70 Series User's Guide