Cisco WAP571 Administration Manual page 93

Wireless
Networks
Cisco WAP571/E Administration Guide
The valid range is from 30 to 86400 seconds. A value of 0 indicates that the
session key is not refreshed.
WPA Personal
WPA Personal is a Wi-Fi Alliance IEEE 802.11i standard, which includes AES-CCMP
and TKIP encryption. The Personal version of WPA uses a pre-shared key (PSK)
instead of using IEEE 802.1X and EAP as is used in the Enterprise WPA security
mode. The PSK is used for an initial check of credentials only. WPA Personal is also
referred to as WPA-PSK.
This security mode is backwards-compatible for wireless clients that support the
original WPA.
These parameters configure WPA Personal:
• WPA Versions—The types of client stations to be supported:
- WPA-TKIP—The network has some client stations that only support
original WPA and TKIP security protocol. Note that selecting only WPA-
TKIP for the access point is not allowed as per the latest WiFi Alliance
requirement.
- WPA2-AES—All client stations on the network support WPA2 version
and AES-CCMP cipher/ security protocol. This WPA version provides
the best security per the IEEE 802.11i standard. As per the latest WiFi
Alliance requirement, the AP has to support this mode all the time.
If the network has a mix of clients, some of which support WPA2 and others
which support only the original WPA, select both of the check boxes. This
lets both WPA and WPA2 client stations associate and authenticate, but
uses the more robust WPA2 for clients who support it. This WPA
configuration allows more interoperability in place of some security.
WPA clients must have one of these keys to be able to associate with the
WAP device:
- A valid TKIP key
- A valid AES-CCMP key
• Key—The shared secret key for WPA Personal security. Enter a string of at
least 8 characters to a maximum of 63 characters. Acceptable characters
include uppercase and lowercase alphabetic letters, the numeric digits, and
special symbols such as @ and #.
• Key Strength Meter—The WAP device checks the key against complexity
criteria such as how many different types of characters (uppercase and
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