I'm implementing a WiFi AAA server with PEAP(mschapv2) method over radius stack.
 
and I test AAA server through PC with windows xp, vista, and also through iphone and smart phone(nokia - symbian).
 
It succeed with iphone and smart phone , they can access internet after authenticated by my AAA server.
 
But the problem is windows client. AAA server authenticated client successfully and answered with encrypted
 
auth_string (rfc2759 :  Microsoft PPP CHAP Extensions, Version 2). but the client (windows pc) does not answer.
 
 
1. I confirmed the success string (S=40byte string) is correct.
2. encryption key is also used at the previous step(challenge, response) and successfully passed.
3. then what could be the problem?
 
 
 
 
I have only one more day for this implementation, but I can't find the problem.
 
 
Pelease somebody help me. I'm waiting for answer all day and all night.  thank you.