All, I am really close to a successful Freeradius implementation for 802.1X wireless using LDAP authentication on the back end. Here is what I have: - RADTEST / clear text Freeradius password from "users" file / WORKS GREAT - Windows XP 802.1X PEAP/MS-CHAPv2 wireless client / clear text Freeradius password from "users" file / WORKS GREAT - RADTEST / LDAP credentials / WORKS GREAT - Windows XP 802.1X PEAP/MS-CHAPv2 wireless client / LDAP credentials / NO GO Here is the debug output. I have read others online with these symptoms but nothing I have found yet will help me. [mschapv2] +- entering group MS-CHAP {...} [mschap] No Cleartext-Password configured. Cannot create LM-Password. [mschap] No Cleartext-Password configured. Cannot create NT-Password. [mschap] Creating challenge hash with username: mwhitlow [mschap] Told to do MS-CHAPv2 for mwhitlow with NT-Password [mschap] FAILED: No NT/LM-Password. Cannot perform authentication. [mschap] FAILED: MS-CHAP2-Response is incorrect Thanks much in advance for the help! Mike