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ZyXEL G-170S User’s Guide

Appendix C Types of EAP Authentication 75

Figure 46 WPA-PSK Authentication

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.

1 The AP passes the wireless client's authentication request to the RADIUS server.

2 The RADIUS server then checks the user's identification against its database and grants

or denies network access accordingly.

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 47 WPA(2) with RADIUS Application Example

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ZyXEL Communications G-170S Guide de l'utilisateur Page 75