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4
System Configuration
- 128 Bit: Enter keys as 13 alphanumeric characters or 26 hexadecimal digits.
- 152 Bit: Enter keys as 16 alphanumeric characters or 32 hexadecimal digits.
Note: Key index and type must match that configured on all clients.
WPA-PSK Security
Wi-Fi Protected Access (WPA) employs a combination of technologies to provide an
enhanced security solution for wireless networks. The WPA Pre-shared Key
(WPA-PSK) mode for small networks uses a common password phrase that must be
manually distributed to all clients that want to connect to the network.
WPA2 is a futher security enhancement that includes the now ratified IEEE 802.11i
wireless security standard. Both WPA and WPA2 provide very robust security
through the support of the Advanced Encryption Standard (AES) and Temporal Key
Integrity Protocol (TKIP) encryption ciphers.
Note: The computationally intensive operations of AES encryption requires hardware
support on client devices. Before implementing AES in the network, be sure that
wireless client hardware is AES or WPA2 compliant.
The displayed items on this page can be described as follows:
• WPA-PSK Status – Enables WPA-PSK or WPA2-PSK security on the VAP
interface. When enabled, WEP clients are not supported. (Default: Disabled).
• Authentication – Selects the wireless security mechanism for the network.
- WPA-PSK – Use pre-shared key authentication for WPA-compliant clients.
- WPA2-PSK – Use pre-shared key authentication for WPA2-compliant clients.
- WPA Mix Mode – Use pre-shared key authentication for WPA- and
WPA2-compliant clients when they coexist in the same network.
• Key Cipher Mode – Selects the encryption cipher to use for multicast and unicast
data traffic:
- Auto – Uses TKIP for the multicast cipher and TKIP or AES for the unicast cipher
depending on the capability of associated clients.
- AES – Uses AES keys for both multicast and unicast encryption.
- TKIP – Uses TKIP keys for both multicast and unicast encryption.
4-12
Figure 4-11. WPA-PSK Wireless Security
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