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'\" t
.\" Title: ntlm_auth4
.\" Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets v1.76.1 <http://docbook.sf.net/>
.\" Date: 03/24/2017
.\" Manual: User Commands
.\" Source: Samba 4.0
.\" Language: English
.\"
.TH "NTLM_AUTH4" "1" "03/24/2017" "Samba 4\&.0" "User Commands"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
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.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
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.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
ntlm_auth4 \- tool to allow external access to Winbind\*(Aqs NTLM authentication function
.SH "SYNOPSIS"
.HP \w'\fBntlm_auth4\fR\ 'u
\fBntlm_auth4\fR [\-d\ debuglevel] [\-l\ logdir] [\-s\ <smb\ config\ file>]
.SH "DESCRIPTION"
.PP
This tool is part of the
\fBsamba\fR(7)
suite\&.
.PP
\fBntlm_auth4\fR
is a helper utility that authenticates users using NT/LM authentication\&. It returns 0 if the users is authenticated successfully and 1 if access was denied\&. ntlm_auth4 uses winbind to access the user and authentication data for a domain\&. This utility is only indended to be used by other programs (currently squid)\&.
.SH "OPERATIONAL REQUIREMENTS"
.PP
The
\fBwinbindd\fR(8)
daemon must be operational for many of these commands to function\&.
.PP
Some of these commands also require access to the directory
winbindd_privileged
in
$LOCKDIR\&. This should be done either by running this command as root or providing group access to the
winbindd_privileged
directory\&. For security reasons, this directory should not be world\-accessable\&.
.SH "OPTIONS"
.PP
\-\-helper\-protocol=PROTO
.RS 4
Operate as a stdio\-based helper\&. Valid helper protocols are:
.PP
squid\-2\&.4\-basic
.RS 4
Server\-side helper for use with Squid 2\&.4\*(Aqs basic (plaintext) authentication\&.
.RE
.PP
squid\-2\&.5\-basic
.RS 4
Server\-side helper for use with Squid 2\&.5\*(Aqs basic (plaintext) authentication\&.
.RE
.PP
squid\-2\&.5\-ntlmssp
.RS 4
Server\-side helper for use with Squid 2\&.5\*(Aqs NTLMSSP authentication\&.
.sp
Requires access to the directory
winbindd_privileged
in
$LOCKDIR\&. The protocol used is described here:
\m[blue]\fBhttp://devel\&.squid\-cache\&.org/ntlm/squid_helper_protocol\&.html\fR\m[]
.RE
.PP
ntlmssp\-client\-1
.RS 4
Cleint\-side helper for use with arbitary external programs that may wish to use Samba\*(Aqs NTLMSSP authentication knowlege\&.
.sp
This helper is a client, and as such may be run by any user\&. The protocol used is effectivly the reverse of the previous protocol\&.
.RE
.PP
gss\-spnego
.RS 4
Server\-side helper that implements GSS\-SPNEGO\&. This uses a protocol that is almost the same as
\fBsquid\-2\&.5\-ntlmssp\fR, but has some subtle differences that are undocumented outside the source at this stage\&.
.sp
Requires access to the directory
winbindd_privileged
in
$LOCKDIR\&.
.RE
.PP
gss\-spnego\-client
.RS 4
Client\-side helper that implements GSS\-SPNEGO\&. This also uses a protocol similar to the above helpers, but is currently undocumented\&.
.RE
.RE
.PP
\-\-username=USERNAME
.RS 4
Specify username of user to authenticate
.RE
.PP
\-\-domain=DOMAIN
.RS 4
Specify domain of user to authenticate
.RE
.PP
\-\-workstation=WORKSTATION
.RS 4
Specify the workstation the user authenticated from
.RE
.PP
\-\-challenge=STRING
.RS 4
NTLM challenge (in HEXADECIMAL)
.RE
.PP
\-\-lm\-response=RESPONSE
.RS 4
LM Response to the challenge (in HEXADECIMAL)
.RE
.PP
\-\-nt\-response=RESPONSE
.RS 4
NT or NTLMv2 Response to the challenge (in HEXADECIMAL)
.RE
.PP
\-\-password=PASSWORD
.RS 4
User\*(Aqs plaintext password
.sp
If not specified on the command line, this is prompted for when required\&.
.RE
.PP
\-\-request\-lm\-key
.RS 4
Retrieve LM session key
.RE
.PP
\-\-request\-nt\-key
.RS 4
Request NT key
.RE
.PP
\-\-diagnostics
.RS 4
Perform Diagnostics on the authentication chain\&. Uses the password from
\fB\-\-password\fR
or prompts for one\&.
.RE
.PP
\-\-require\-membership\-of={SID|Name}
.RS 4
Require that a user be a member of specified group (either name or SID) for authentication to succeed\&.
.RE
.SH "EXAMPLE SETUP"
.PP
To setup ntlm_auth4 for use by squid 2\&.5, with both basic and NTLMSSP authentication, the following should be placed in the
squid\&.conf
file\&.
.sp
.if n \{\
.RS 4
.\}
.nf
auth_param ntlm program ntlm_auth4 \-\-helper\-protocol=squid\-2\&.5\-ntlmssp
auth_param basic program ntlm_auth4 \-\-helper\-protocol=squid\-2\&.5\-basic
auth_param basic children 5
auth_param basic realm Squid proxy\-caching web server
auth_param basic credentialsttl 2 hours
.fi
.if n \{\
.RE
.\}
.if n \{\
.sp
.\}
.RS 4
.it 1 an-trap
.nr an-no-space-flag 1
.nr an-break-flag 1
.br
.ps +1
\fBNote\fR
.ps -1
.br
.PP
This example assumes that ntlm_auth4 has been installed into your path, and that the group permissions on
winbindd_privileged
are as described above\&.
.sp .5v
.RE
.PP
To setup ntlm_auth4 for use by squid 2\&.5 with group limitation in addition to the above example, the following should be added to the
squid\&.conf
file\&.
.sp
.if n \{\
.RS 4
.\}
.nf
auth_param ntlm program ntlm_auth4 \-\-helper\-protocol=squid\-2\&.5\-ntlmssp \-\-require\-membership\-of=\*(AqWORKGROUP\eDomain Users\*(Aq
auth_param basic program ntlm_auth4 \-\-helper\-protocol=squid\-2\&.5\-basic \-\-require\-membership\-of=\*(AqWORKGROUP\eDomain Users\*(Aq
.fi
.if n \{\
.RE
.\}
.SH "TROUBLESHOOTING"
.PP
If you\*(Aqre experiencing problems with authenticating Internet Explorer running under MS Windows 9X or Millenium Edition against ntlm_auth4\*(Aqs NTLMSSP authentication helper (\-\-helper\-protocol=squid\-2\&.5\-ntlmssp), then please read
\m[blue]\fBthe Microsoft Knowledge Base article #239869 and follow instructions described there\fR\m[]\&\s-2\u[1]\d\s+2\&.
.SH "VERSION"
.PP
This man page is correct for version 3\&.0 of the Samba suite\&.
.SH "AUTHOR"
.PP
The original Samba software and related utilities were created by Andrew Tridgell\&. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed\&.
.PP
The ntlm_auth4 manpage was written by Jelmer Vernooij and Andrew Bartlett\&.
.SH "NOTES"
.IP " 1." 4
the Microsoft Knowledge Base article #239869 and follow instructions described there
.RS 4
\%http://support.microsoft.com/support/kb/articles/Q239/8/69.ASP
.RE