Sorry for my last message without subject. I've already repared my problem. I had put in my users file: "test" User-Password := password # Auth-Type = Local Reply-Message = "Hello, %u" and this Reply-Message (which is included in users file as an example) was the reason for my server to don't work. I've only commented this line and the server functions again. Thank you!!! I will ask you something about LEAP protocol soon .