On Jun 9, 2018, at 12:19 AM, تعلم البرمجة <mido2010bona at gmail.com> wrote: > > Hello I have freeradius 3.0.12 and I want check if cleartext-password == > chap or mschap password how I can do this You don't. You tell FreeRADIUS what the Cleartext-Password is, and the "chap" or "mschap" module does the appropriate comparison. Alan DeKok.