Hi everyone, I read through some of threads about using MAC address authentication, but the issue still wasn't solved. I am new to this field, and I want to implement a FreeRadius server to communicate with Cisco Aironet 1200 Access Point using MAC address authentication method. The network environment: 1. Set up Cisco AP to use Radius server, and MAC Address Authentication 2. Set up freeRadius (Ver.1.1.2) on FreeBSD server (Ver 6.1), and use MySQL database (not users file) 3. I insert a record into radcheck table: use MAC address as user name 1 000b6b54a738 Password := '' 4. Use Ntradping.exe to test the radius server with above user account (leave password as blank), and get Access-Reject. Obviously, I guess the issue is in the password. If I put the some characters into the password field in radcheck table and test it again with the same password in Ntradoing.exe, I do get Access-Accept. But, I don't think Cisco AP will send a password when using MAC address authentication. I am wondering how to input data in radius database for AP using MAC address authentication, and where I should fill in all relating settings. Any input from the members of this list would be much appreciated. Thanks & Regards, Edward