Hello, I've just set up a DC controller using samba 4 on Debian 9 and FreeRADIUS 3 root@dc:~# samba -V Version 4.5.8-Debian root@dc:~# uname -a Linux dc 4.9.0-3-amd64 #1 SMP Debian 4.9.30-2+deb9u2 (2017-06-26) x86_64 GNU/Linux root@dc:~# freeradius -v radiusd: FreeRADIUS Version 3.0.12, for host x86_64-pc-linux-gnu, built on May 30 2017 at 15:18:34 Samba DC is running OK, i can authenticate against it using ntlm_auth root@dc:~# ntlm_auth --request-nt-key --domain=CCBPINHAIS --username=teste-login --password=Thebas@1234 NT_STATUS_OK: Success (0x0) I've followed the setup tutorial at: http://deployingradius.com/documents/configuration/active_directory.html and everything works fine until the part that I setup mschap, the test using the config "DEFAULT Auth-Type = ntlm_auth" at users file is OK, but when I remove the test config and setup mschap I cant authenticate, I'll post the debug log below and aprreciate if anyone can help me. First the output using test config: root@dc:~# radtest teste-login Thebas@1234 localhost 0 testing123 Sent Access-Request Id 152 from 0.0.0.0:59761 to 127.0.0.1:1812 length 81 User-Name = "teste-login" User-Password = "Thebas@1234" NAS-IP-Address = 172.16.100.254 NAS-Port = 0 Message-Authenticator = 0x00 Cleartext-Password = "Thebas@1234" Received Access-Accept Id 152 from 127.0.0.1:1812 to 0.0.0.0:0 length 20 Now removing the test config and using mschap: root@dc:~# radtest -t mschap teste-login Thebas@1234 localhost 0 testing123 Sent Access-Request Id 41 from 0.0.0.0:41126 to 127.0.0.1:1812 length 137 User-Name = "teste-login" MS-CHAP-Password = "Thebas@1234" NAS-IP-Address = 172.16.100.254 NAS-Port = 0 Message-Authenticator = 0x00 Cleartext-Password = "Thebas@1234" MS-CHAP-Challenge = 0x5c2a896e7b319f2f MS-CHAP-Response = 0x000100000000000000000000000000000000000000000000000073a248201d2f5611be653fd75e48b46b9e08d049cb60122d Received Access-Reject Id 41 from 127.0.0.1:1812 to 0.0.0.0:0 length 61 MS-CHAP-Error = "\000E=691 R=1 C=81c1063947fe901b V=2" (0) -: Expected Access-Accept got Access-Reject Below is the debug log: (0) Received Access-Request Id 41 from 127.0.0.1:41126 to 127.0.0.1:1812 length 137 (0) User-Name = "teste-login" (0) NAS-IP-Address = 172.16.100.254 (0) NAS-Port = 0 (0) Message-Authenticator = 0x97d3daecfc41cd5c63cca87fcae738c8 (0) MS-CHAP-Challenge = 0x5c2a896e7b319f2f (0) MS-CHAP-Response = 0x000100000000000000000000000000000000000000000000000073a248201d2f5611be653fd75e48b46b9e08d049cb60122d (0) # Executing section authorize from file /etc/freeradius/3.0/sites-enabled/default (0) authorize { (0) policy filter_username { (0) if (&User-Name) { (0) if (&User-Name) -> TRUE (0) if (&User-Name) { (0) if (&User-Name =~ / /) { (0) if (&User-Name =~ / /) -> FALSE (0) if (&User-Name =~ /@[^@]*@/ ) { (0) if (&User-Name =~ /@[^@]*@/ ) -> FALSE (0) if (&User-Name =~ /\.\./ ) { (0) if (&User-Name =~ /\.\./ ) -> FALSE (0) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) { (0) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\.(.+)$/)) -> FALSE (0) if (&User-Name =~ /\.$/) { (0) if (&User-Name =~ /\.$/) -> FALSE (0) if (&User-Name =~ /@\./) { (0) if (&User-Name =~ /@\./) -> FALSE (0) } # if (&User-Name) = notfound (0) } # policy filter_username = notfound (0) [preprocess] = ok (0) [chap] = noop (0) mschap: Found MS-CHAP attributes. Setting 'Auth-Type = mschap' (0) [mschap] = ok (0) [digest] = noop (0) suffix: Checking for suffix after "@" (0) suffix: No '@' in User-Name = "teste-login", looking up realm NULL (0) suffix: No such realm "NULL" (0) [suffix] = noop (0) eap: No EAP-Message, not doing EAP (0) [eap] = noop (0) [files] = noop (0) [expiration] = noop (0) [logintime] = noop (0) pap: WARNING: No "known good" password found for the user. Not setting Auth-Type (0) pap: WARNING: Authentication will fail unless a "known good" password is available (0) [pap] = noop (0) } # authorize = ok (0) Found Auth-Type = mschap (0) # Executing group from file /etc/freeradius/3.0/sites-enabled/default (0) authenticate { (0) mschap: Client is using MS-CHAPv1 with NT-Password (0) mschap: Executing: /usr/bin/ntlm_auth --request-nt-key --username=%{mschap:User-Name:-None} --domain=%{%{mschap:NT-Domain}:-CCBPINHAIS} --challenge=%{mschap:Challenge:-00} --nt-response=%{mschap:NT-Response:-00}: (0) mschap: EXPAND --username=%{mschap:User-Name:-None} (0) mschap: --> --username=teste-login (0) mschap: ERROR: No NT-Domain was found in the User-Name (0) mschap: EXPAND --domain=%{%{mschap:NT-Domain}:-CCBPINHAIS} (0) mschap: --> --domain=CCBPINHAIS (0) mschap: mschap1: 5c (0) mschap: EXPAND --challenge=%{mschap:Challenge:-00} (0) mschap: --> --challenge=5c2a896e7b319f2f (0) mschap: EXPAND --nt-response=%{mschap:NT-Response:-00} (0) mschap: --> --nt-response=73a248201d2f5611be653fd75e48b46b9e08d049cb60122d (0) mschap: ERROR: Program returned code (1) and output 'Logon failure (0xc000006d)' (0) mschap: External script failed (0) mschap: ERROR: External script says: Logon failure (0xc000006d) (0) mschap: ERROR: MS-CHAP2-Response is incorrect (0) [mschap] = reject (0) } # authenticate = reject (0) Failed to authenticate the user (0) Using Post-Auth-Type Reject (0) # Executing group from file /etc/freeradius/3.0/sites-enabled/default (0) Post-Auth-Type REJECT { (0) attr_filter.access_reject: EXPAND %{User-Name} (0) attr_filter.access_reject: --> teste-login (0) attr_filter.access_reject: Matched entry DEFAULT at line 11 (0) [attr_filter.access_reject] = updated (0) [eap] = noop (0) policy remove_reply_message_if_eap { (0) if (&reply:EAP-Message && &reply:Reply-Message) { (0) if (&reply:EAP-Message && &reply:Reply-Message) -> FALSE (0) else { (0) [noop] = noop (0) } # else = noop (0) } # policy remove_reply_message_if_eap = noop (0) } # Post-Auth-Type REJECT = updated (0) Delaying response for 1.000000 seconds Waking up in 0.2 seconds. Waking up in 0.7 seconds. (0) Sending delayed response (0) Sent Access-Reject Id 41 from 127.0.0.1:1812 to 127.0.0.1:41126 length 61 (0) MS-CHAP-Error = "\000E=691 R=1 C=81c1063947fe901b V=2" Waking up in 3.9 seconds. (0) Cleaning up request packet ID 41 with timestamp +4 Stripping the debug log, the error lines are: (0) mschap: ERROR: No NT-Domain was found in the User-Name ... 0) mschap: ERROR: Program returned code (1) and output 'Logon failure (0xc000006d)' (0) mschap: External script failed (0) mschap: ERROR: External script says: Logon failure (0xc000006d) (0) mschap: ERROR: MS-CHAP2-Response is incorrect (0) [mschap] = reject I think the problem has something about that last error about MS-CHAP2-Response, but I don't have a clue what it could it be, I also noticed that radtest sent a MS-CHAPv1 auth request, is it OK? Thank you very much. Best Reagrds, Hugo Thebas