Hello, I installed Freeradius version 3 on CentOS 6.5 this morning and I am having trouble authenticating against my domain controllers. The following tests work: -------------------------- [root@cshq]# wbinfo -a chicken%password plaintext password authentication failed Could not authenticate user chicken%password with plaintext password challenge/response password authentication succeeded ----------------------------------- --------------------------------- [root@cshq]# ntlm_auth --request-nt-key --domain=domain.net --username=chicken password: NT_STATUS_OK: Success (0x0) --------------------------------- I can successfully authenticate using the radtest command with the -t mschap flag enabled, but when I remove the -t mschap flag, it fails. I have attached the two different debug outputs for each result. Any help would be greatly appreciated. ------------------------------------ [root@cshq]# radtest chicken <password> 127.0.0.1 0 testing123 Sent Access-Request Id 126 from 0.0.0.0:54228 to 127.0.0.1:1812 length 80 User-Name = "chicken" User-Password = "<password>" NAS-IP-Address = 172.16.50.40 NAS-Port = 0 Message-Authenticator = 0x00 Cleartext-Password = "<password>" Received Access-Reject Id 126 from 127.0.0.1:1812 to 0.0.0.0:0 length 20 (0) -: Expected Access-Accept got Access-Reject ------------------------------ [root@cshq]# radtest -t mschap chicken <password> 127.0.0.1 0 testing123 Sent Access-Request Id 232 from 0.0.0.0:45738 to 127.0.0.1:1812 length 136 User-Name = "chicken" MS-CHAP-Password = "<password>" NAS-IP-Address = 172.16.50.40 NAS-Port = 0 Message-Authenticator = 0x00 Cleartext-Password = "<password>" MS-CHAP-Challenge = 0x27572b879bc37cd5 MS-CHAP-Response = 0x00010000000000000000000000000000000000000000000000003446fe427512934fce4d2bed4172dfb37fa43ab483323a01 Received Access-Accept Id 232 from 127.0.0.1:1812 to 0.0.0.0:0 length 84 MS-CHAP-MPPE-Keys = 0x0000000000000000b598b791 MS-MPPE-Encryption-Policy = Encryption-Required MS-MPPE-Encryption-Types = 4