I cannot get the radtest to work and this seems to be an integral part of continuing. I can now do a mysql -u radius -p radius and get into mysql. Resetting the password and FLUS PRIVILEGES helped there. I have created a user, atkinsd, on the radius database in radcheck. If I do a radtest atkinsd cisco123 localhost 1645 SHARED, I still get the same error. Why? [root@cleveland raddb]# radtest atkinsd cisco123 localhost 1812 xxxxx (I have tried both 1645 and 1812 with no luck) Sending Access-Request of id 225 to 127.0.0.1 port 1812 User-Name = "atkinsd" User-Password = "cisco123" NAS-IP-Address = 255.255.255.255 NAS-Port = 1812 Re-sending Access-Request of id 225 to 127.0.0.1 port 1812 User-Name = "atkinsd" User-Password = "cisco123" NAS-IP-Address = 255.255.255.255 NAS-Port = 1812 rad_recv: Access-Reject packet from host 127.0.0.1:1812, id=225, length=20 rad_decode: Received Access-Reject packet from client 127.0.0.1 port 1812 with invalid signature (err=2)! (Shared secret is incorrect.) [root@cleveland raddb]#