ZyXEL ZyWALL 5 User Guide - Page 237
WIRELESS > Wi-Fi > Wireless Card, Wireless, Security
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Chapter 12 Wireless Screens 12.2.3 WPA Click WIRELESS > Wi-Fi > Wireless Card to display the Wireless Card screen. Select WPA from the Security list. Figure 133 WIRELESS > Wi-Fi > Wireless Card: WPA The following wireless LAN security fields become available when you select WPA in the Security drop down list-box. Table 61 WIRELESS > Wi-Fi > Wireless Card: WPA LABEL DESCRIPTION Security Select WPA from the drop-down list. 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. Authentication Databases Click RADIUS to go to the RADIUS screen where you can configure the ZyWALL to check an external RADIUS server. 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. ZyWALL 5/35/70 Series User's Guide 237