Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 276)

264 Brocade Mobility RFS Controller System Reference Guide
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FIGURE 11 WLAN Policy Security screen - External Controller Field
5. Select the Enable option if WLAN authentication is handled using an external resource. This
feature is disabled by default.
6. If using an external resource, use the drop-down menu to select either Hostname or IP Address
and enter the server information in the Host field.
7. If a proxy is needed for connection, choose a proxy mode of either Through RF Domain
Manager or Through Wireless Controller. If no proxy is needed, select None.
8. Select OK when completed to update the External Controller configuration. Select Reset to
revert the WLAN Policy Security screen back to the last saved configuration.
WPA/WPA2-TKIP
Configuring WLAN Security
Wi-Fi Protected Access (WPA) is an encryption scheme specified in the IEEE Wireless Fidelity (Wi-Fi)
standard, 802.11i. WPA provides more sophisticated data encryption than WEP. WPA is designed
for corporate networks and small-business environments where more wireless traffic allows
quicker discovery of encryption keys by an unauthorized person.
The encryption method is Temporal Key Integrity Protocol (TKIP). TKIP addresses WEP’s
weaknesses with a re-keying mechanism, a per-packet mixing function, a message integrity check
and an extended initialization vector. However TKIP also has vulnerabilities.
Wi-Fi Protected Access 2 (WPA2) is an enhanced version of WPA. WPA2 uses the Advanced
Encryption Standard (AES) instead of TKIP. AES supports 128-bit, 192-bit and 256-bit keys.
WPA/WPA2 also provide strong user authentication based on 802.1x EAP.
To configure WPA/WPA2 encryption on a WLAN:
1. Select Configuration > Wireless > Wireless LAN Policy to display available WLANs.
2. Select the Add button to create an additional WLAN or select an existing WLAN and Edit to
modify its properties.
3. Select Security.
4. Select the WPA/WPA2-TKIP radio button from within the Select Encryption field.
The screen populates with the parameters required to define a WLAN WPA/WPA2-TKIP
configuration for the new or existing WLAN.