PEAP(EAP-GTC) works with LDAP, compatibility table,
Configure ACS for PEAP authentication.
And when it comes to configure client, generally I have seen with Intel clients, you have an option to uncheck "Validate Server Certificate" under "PEAP Server" section if you do not want to install CA root certificate on every client, after you have selected Authentication type as PEAP and authentication protocol as GTC under "PEAP User" section.
As you explained eap-gtc is suitable for us. Can we use eap-gtc in windows xp without cisco wireless client adapter?
i installed cisco wireless client adapter software but still there isn't GTC protocol under PEAP properties.
this is for wireless authentication right?
In that case you can use the default wireless utility that it comes with, i.e. with intel card, intel utility etc. They do have an option for GTC.
i have an intel card and in peap properties section there are only two auth type mschapv2 and smartcard or certificate. no gtc.
No not the Intel card model. I guess you do not have Intel supplicant. Search for Intel PRoset/wireless software on Google.