ZyXEL p-334wh Guia Do Utilizador

P-334WH User’s Guide

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Appendix E Wireless LANs

3 The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then 

sets up a key hierarchy and management system, using the pair-wise key to dynamically 
generate unique data encryption keys to encrypt every data packet that is wirelessly 
communicated between the AP and the wireless clients.

Figure 147   WPA(2) with RADIUS Application Example

A WPA(2)-PSK application looks as follows.

1 First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key 

(PSK) must consist of between 8 and 63 ASCII characters or 64 hexadecimal characters 
(including spaces and symbols).

2 The AP checks each wireless client's password and (only) allows it to join the network if 

the password matches.

3 The AP and wireless clients use the pre-shared key to generate a common PMK (Pairwise 

Master Key).

4 The AP and wireless clients use the TKIP or AES encryption process to encrypt data 

exchanged between them.