Chapter 5 — Network Support
156 CK61 Mobile Computer with Windows Mobile User’s Manual
To configure using TTLS
1 Set 8021x Security as “TTLS,” then choose one of the following:
•Set Association to “Open.” (default configuration)
•Set Association to “WPA.”
•Set Association to “WPA2” and Encryption to “TKIP” or “AES.”
•Set Association to “Network EAP” and Encryption to either 
“WEP” or “CKIP.”
2 Enter your unique Username to use this protocol.
3 Select Prompt for password to have the user enter this password each 
time to access the protocol, or leave Use following password as selected 
and enter your unique password to use the protocol without entering a 
password each time you use your CK61.
4 Tap Get Certificates to obtain or import server certificates (page 157).
5 Tap Additional Settings to assign an inner TTLS authentication and an 
inner EAP, and set the server certificate validation and trust.
To configure additional TTLS settings
1 Select an authentication method from the Inner TTLS Authentication 
drop-down list.
Method Description
PAP Password Authentication Protocol. A simple authentication protocol that 
sends security information in the clear.
CHAP Challenge Handshake Authentication Protocol. Use of Radius to 
authenticate a terminal without sending security data in the clear. 
Authenticates against non-Windows user databases. You cannot use this if 
authenticating against a Windows NT Domain or Active Directory.
MS-CHAP; 
MS-CHAP-V2
Authenticates against a Windows Domain Controller and other
non-Windows user databases.
PAP/Token 
Card
Use with token cards. The password value entered is never cached.
EAP Extensible Authentication Protocol