EAP-TTLS not working on Windows 7/Vista

J.s. Ju js.ju88
Fri Mar 25 02:35:37 PDT 2011

Thank you very much Braun.

Actually the error comes at the final stage of authentication specifically in 
key derivation stage (after the validation of user name). Please see the 
"TTLS.pcap" file attached.

Thanks in advance,

From: "michael-dev at fami-braun.de" <michael-dev at fami-braun.de>
To: hostap at lists.shmoo.com
Sent: Fri, March 25, 2011 1:20:22 AM
Subject: Re: EAP-TTLS not working on Windows 7/Vista


Am 24.03.2011 15:17, schrieb J.s. Ju:
> I have following testing setup:
>      Supplicant ---> Hostapd ---> Free Radius.
> Using EAP-TTLS I could authenticate successfully from Windows XP.
> When I changed XP to Windows 7, authentication failed. TLS session 
> was OK, fails after that.
> Please help me to solve this problem.

just disable the windows "use hostname for authentication" feature.
It is in the connection settings => security => extended settings =>
mode of authentication (the actual gui may variate, as I don't have an
english windows 7).

M. Braun

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