ZyXEL Communications zyair g-300 User Manual

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ZyAIR G-300 User’s Guide 
2-8 
 
Using the ZyAIR Utility 
 
Figure 2-7
 
WPA-PSK Authentication
 
2.2.5  WPA 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 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.