Cerio OW-400 A1 User Manual page 88

 Open System: Data are not unencrypted during transmission when this option is selected.
 WPA/WPA2 Personal: WPA/WPA2 is short for W-Fi Protected Access-Pre-Shared Key.
WPA/WPA2 uses the same encryption way with WPA, and the only difference between
them is that WPA/WPA2 recreates a simple shared key, instead of using the user's
certification.
 WPA Mode: Administrator can select security for Auto or only WPA or only WPA2.
 Cipher Type: Administrator can select use AES or TKIP with WPA / WPA2 encryption
method.
AES is short for "Advanced Encryption Standard", The AES cipher is specified as a
number of repetitions of transformation rounds that convert the input plaintext into the
final output of ciphertext. Each round consists of several processing steps, including one
that depends on the encryption key. A set of reverse rounds are applied to transform
ciphertext back into the original plaintext using the same encryption key.
TKIP is short for "Temporal Key Integrity Protocol", TKIP scrambles the keys using a
hashing algorithm and, by adding an integrity-checking feature, ensures that the keys
haven't been tampered with.
 Group Key Update Interval: This time interval for re-keying GTK (broadcast/multicast
encryption keys) in seconds. Enter the time-length required; the default time is 600
seconds.
Pass Phrase: Enter the ESSID pass phrase.

Click "Save" button to save your set function. Then click "Reboot" button to activate your changes.
V4.0