Wpa(2)-Psk Application Example; Wpa(2) With Radius Application Example - ZyXEL Communications NBG4604 User Manual

25.1.2 WPA(2)-PSK Application Example

A WPA(2)-PSK application looks as follows.
First enter identical passwords into the AP and all wireless clients. The Pre-Shared
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Key (PSK) must consist of between 8 and 63 ASCII characters (including spaces
and symbols).
The AP checks each wireless client's password and (only) allows it to join the
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network if the password matches.
The AP derives and distributes keys to the wireless clients.
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The AP and wireless clients use the TKIP or AES encryption process to encrypt
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data exchanged between them.
Figure 166 WPA(2)-PSK Authentication

25.1.3 WPA(2) with RADIUS Application Example

You need the IP address of the RADIUS server, its port number (default is 1812),
and the RADIUS shared secret. A WPA(2) application example with an external
RADIUS server looks as follows. "A" is the RADIUS server. "DS" is the distribution
system.
The AP passes the wireless client's authentication request to the RADIUS server.
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The RADIUS server then checks the user's identification against its database and
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grants or denies network access accordingly.
The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that
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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.
NBG4604 User's Guide
Appendix D Wireless LANs
259