Справочник Пользователя для ZyXEL Communications ZyXEL G-1000 v2

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ZyXEL G-1000 v2 User’s Guide
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Figure 102   Sequences for EAP MD5–Challenge Authentication
Mutual Authentication with Internal RADIUS server.
Microsofts Challenge-Handshake Authentication Protocol (MS-CHAP V2) is used to 
periodically verify the identity of the peer (station or other AP) using a three-way handshake.
The following figure depicts a typical wireless network with a G-1000 v2 RADIUS server for 
user authentication using PEAP (Protected EAP) and MS-CHAP V2.
The G-1000 v2 authenticates in two phases when it is acting as a RADIUS server: