ZyXEL Communications MAX-306M1 User Manual page 270

Appendix A WiMAX Security
Authentication
The WiMAX Modem supports EAP-TTLS authentication.
EAP-TTLS (Tunneled Transport Layer Service)
EAP-TTLS is an extension of the EAP-TLS authentication that uses certificates for
only the server-side authentications to establish a secure connection (with EAP-
TLS digital certifications are needed by both the server and the wireless clients for
mutual authentication). Client authentication is then done by sending username
and password through the secure connection, thus client identity is protected. For
client authentication, EAP-TTLS supports EAP methods and legacy authentication
methods such as PAP, CHAP, MS-CHAP and MS-CHAP v2.
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User's Guide