ZyXEL Communications SBG Series Support Notes page 38

ZyXEL – SBG Support Notes
authentication and improved data encryption.
What is WPA-PSK?
WPA-PSK (Wi-Fi Protected Access Pre-Shared Key) can be used if users do
not have a RADIUS server but still want to benefit from WPA security,
because WPA-PSK only requires a single password to be entered on
wireless AP/gateway and wireless client. As long as the passwords match,
a client will be granted access to the WLAN.
What is WPA2?
WPA2 (Wi-Fi Protected Access 2) offers a higher security level than WPA,
because it introduces an AES-based algorithm and CCMP in it and offers
stronger encryption then WPA uses (TKIP). WPA2 encryption keys that are
used for each client on the network are unique and specific to that client.
Eventually, each packet which is sent over the air is encrypted with a
unique key. The higher security is enhanced with the use of a new and
unique encryption key because there is no key reuse.
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