Figure 69 Wpa-Psk Authentication; Figure 70 Wpa(2) With Radius Application Example - ZyXEL Communications G-210H User Manual

Figure 69 WPA-PSK Authentication

WPA(2) with RADIUS Application Example
To set up WPA(2), 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 A 256-bit Pairwise Master Key (PMK) is derived from the authentication process by the
RADIUS server and the client.
4 The RADIUS server distributes the PMK to the AP. The AP then sets up a key hierarchy
and management system, using the PMK to dynamically generate unique data encryption
keys. The keys are used to encrypt every data packet that is wirelessly communicated
between the AP and the wireless clients.

Figure 70 WPA(2) with RADIUS Application Example

G-210H User's Guide
Appendix C Wireless Security
89