ZyXEL NWA-3163 User Guide - Page 169
Table 43
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Chapter 10 Wireless Security Screen The following table describes the labels not previously discussed Table 43 Security: WPA2 or WPA2-MIX LABEL DESCRIPTIONS Profile Name Type a name to identify this security profile. Security Mode Choose WPA2 or WPA2-MIX in this field. ReAuthentication Specify how often wireless stations have to resend usernames and Timer passwords in order to stay connected. The default value is 0, which means the reauthentication off. Idle Timeout Group Key Update Timer PMK Cache PreAuthentication Apply Reset Note: If wireless station authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority. The NWA 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 3600 seconds (or 1 hour). 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 NWA's default is 1800 seconds (30 minutes). When a wireless client moves from one AP's coverage area to another, it performs an authentication procedure (exchanging security information) with the new AP. Instead of re-authenticating a client each time it returns to the AP's coverage area, which can cause delays to time-sensitive applications, the AP and the client can store (or "cache") and use information about their previous authentication. Select Enable to allow PMK caching, or Disable to switch this feature off. Pre-authentication allows a wireless client to perform authentication with a different AP from the one to which it is currently connected, before moving into the new AP's coverage area. This speeds up roaming. Select Enable to allow pre-authentication, or Disable to switch it off. Click Apply to save your changes. Click Reset to begin configuring this screen afresh. NWA-3160 Series User's Guide 169