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4.5.3.4 WIRELESS – Security - WPA
WPA (Wi-Fi Protected Access) is a security protocol for Wireless Local Area Networks (WLAN). WPA uses a
sophisticated key hierarchy that generates new encryption keys each time a mobile device establishes itself
with an access point.
Protocols including 802.1X, EAP and RADIUS are used for strong authentication. Like WEP, keys can still be
entered manually (preshared keys); however, using a RADIUS authentication server provides automatic key
generation and enterprise-wide authentication. Figure below illustrates the default setting of the WPA (Wi-Fi
Protected Access) Wireless Security screen.
Note: Not all wireless adapters support WPA. Furthermore, client software is required on the client.
„ Group Key Interval: Type a numeric value (In seconds) of the time lapse in changing the key in
the “Group Key Interval” box.
„ 802.1x: When selected, the WPA stations authenticate with the RADIUS server using EAP-TLS
(Extensible Authentication Protocol - Transport Layer Security) over 802.1x.
„ Port: The RADUIS server's port.
„ Secret: The secret that the AP shares with the RADIUS server.
„ PSK String: Pre-Shared Key String. When selected, the WPA stations do not authenticate with
the RADIUS server using EAP-TLS. Instead they share a pre-shared secret with the AP (ASCII
format). The PSK string needs to be entered in the first time configuration with each station.
„ Apply: Click Apply to complete the setting.
„ Cancel: Click Cancel to ignore all the changes.
„ To complete and save the setting, click Save All after clicking the Apply button.