<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc"> <refentry id="ntlm-auth.1"> <refmeta> <refentrytitle>ntlm_auth</refentrytitle> <manvolnum>1</manvolnum> </refmeta> <refnamediv> <refname>ntlm_auth</refname> <refpurpose>tool to allow external access to Winbind's NTLM authentication function</refpurpose> </refnamediv> <refsynopsisdiv> <cmdsynopsis> <command>ntlm_auth</command> <arg choice="opt">-d debuglevel</arg> <arg choice="opt">-l logdir</arg> <arg choice="opt">-s <smb config file></arg> </cmdsynopsis> </refsynopsisdiv> <refsect1> <title>DESCRIPTION</title> <para>This tool is part of the <citerefentry><refentrytitle>samba</refentrytitle> <manvolnum>7</manvolnum></citerefentry> suite.</para> <para><command>ntlm_auth</command> 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_auth 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). </para> </refsect1> <refsect1> <title>OPERATIONAL REQUIREMENTS</title> <para> The <citerefentry><refentrytitle>winbindd</refentrytitle> <manvolnum>8</manvolnum></citerefentry> daemon must be operational for many of these commands to function.</para> <para>Some of these commands also require access to the directory <filename>winbindd_privileged</filename> in <filename>$LOCKDIR</filename>. This should be done either by running this command as root or providing group access to the <filename>winbindd_privileged</filename> directory. For security reasons, this directory should not be world-accessable. </para> </refsect1> <refsect1> <title>OPTIONS</title> <variablelist> <varlistentry> <term>--helper-protocol=PROTO</term> <listitem><para> Operate as a stdio-based helper. Valid helper protocols are: </para> <variablelist> <varlistentry> <term>squid-2.4-basic</term> <listitem><para> Server-side helper for use with Squid 2.4's basic (plaintext) authentication. </para> </listitem> </varlistentry> <varlistentry> <term>squid-2.5-basic</term> <listitem><para> Server-side helper for use with Squid 2.5's basic (plaintext) authentication. </para> </listitem> </varlistentry> <varlistentry> <term>squid-2.5-ntlmssp</term> <listitem><para> Server-side helper for use with Squid 2.5's NTLMSSP authentication. </para> <para>Requires access to the directory <filename>winbindd_privileged</filename> in <filename>$LOCKDIR</filename>. The protocol used is described here: <ulink url="http://devel.squid-cache.org/ntlm/squid_helper_protocol.html">http://devel.squid-cache.org/ntlm/squid_helper_protocol.html</ulink> </para> </listitem> </varlistentry> <varlistentry> <term>ntlmssp-client-1</term> <listitem><para> Cleint-side helper for use with arbitary external programs that may wish to use Samba's NTLMSSP authentication knowlege. </para> <para>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. </para> </listitem> </varlistentry> <varlistentry> <term>gss-spnego</term> <listitem><para> Server-side helper that implements GSS-SPNEGO. This uses a protocol that is almost the same as <command>squid-2.5-ntlmssp</command>, but has some subtle differences that are undocumented outside the source at this stage. </para> <para>Requires access to the directory <filename>winbindd_privileged</filename> in <filename>$LOCKDIR</filename>. </para> </listitem> </varlistentry> <varlistentry> <term>gss-spnego-client</term> <listitem><para> Client-side helper that implements GSS-SPNEGO. This also uses a protocol similar to the above helpers, but is currently undocumented. </para> </listitem> </varlistentry> </variablelist> </listitem> </varlistentry> <varlistentry> <term>--username=USERNAME</term> <listitem><para> Specify username of user to authenticate </para></listitem> </varlistentry> <varlistentry> <term>--domain=DOMAIN</term> <listitem><para> Specify domain of user to authenticate </para></listitem> </varlistentry> <varlistentry> <term>--workstation=WORKSTATION</term> <listitem><para> Specify the workstation the user authenticated from </para></listitem> </varlistentry> <varlistentry> <term>--challenge=STRING</term> <listitem><para>NTLM challenge (in HEXADECIMAL)</para> </listitem> </varlistentry> <varlistentry> <term>--lm-response=RESPONSE</term> <listitem><para>LM Response to the challenge (in HEXADECIMAL)</para></listitem> </varlistentry> <varlistentry> <term>--nt-response=RESPONSE</term> <listitem><para>NT or NTLMv2 Response to the challenge (in HEXADECIMAL)</para></listitem> </varlistentry> <varlistentry> <term>--password=PASSWORD</term> <listitem><para>User's plaintext password</para><para>If not specified on the command line, this is prompted for when required. </para></listitem> </varlistentry> <varlistentry> <term>--request-lm-key</term> <listitem><para>Retreive LM session key</para></listitem> </varlistentry> <varlistentry> <term>--request-nt-key</term> <listitem><para>Request NT key</para></listitem> </varlistentry> <varlistentry> <term>--diagnostics</term> <listitem><para>Perform Diagnostics on the authentication chain. Uses the password from <command>--password</command> or prompts for one.</para> </listitem> </varlistentry> <varlistentry> <term>--require-membership-of={SID|Name}</term> <listitem><para>Require that a user be a member of specified group (either name or SID) for authentication to succeed.</para> </listitem> </varlistentry> &popt.common.samba; &stdarg.help; </variablelist> </refsect1> <refsect1> <title>EXAMPLE SETUP</title> <para>To setup ntlm_auth for use by squid 2.5, with both basic and NTLMSSP authentication, the following should be placed in the <filename>squid.conf</filename> file. <programlisting> auth_param ntlm program ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param basic program ntlm_auth --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 </programlisting></para> <note><para>This example assumes that ntlm_auth has been installed into your path, and that the group permissions on <filename>winbindd_privileged</filename> are as described above.</para></note> <para>To setup ntlm_auth for use by squid 2.5 with group limitation in addition to the above example, the following should be added to the <filename>squid.conf</filename> file. <programlisting> auth_param ntlm program ntlm_auth --helper-protocol=squid-2.5-ntlmssp --require-membership-of='WORKGROUP\Domain Users' auth_param basic program ntlm_auth --helper-protocol=squid-2.5-basic --require-membership-of='WORKGROUP\Domain Users' </programlisting></para> </refsect1> <refsect1> <title>TROUBLESHOOTING</title> <para>If you're experiencing problems with authenticating Internet Explorer running under MS Windows 9X or Millenium Edition against ntlm_auth's NTLMSSP authentication helper (--helper-protocol=squid-2.5-ntlmssp), then please read <ulink url="http://support.microsoft.com/support/kb/articles/Q239/8/69.ASP"> the Microsoft Knowledge Base article #239869 and follow instructions described there</ulink>. </para> </refsect1> <refsect1> <title>VERSION</title> <para>This man page is correct for version 3.0 of the Samba suite.</para> </refsect1> <refsect1> <title>AUTHOR</title> <para>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.</para> <para>The ntlm_auth manpage was written by Jelmer Vernooij and Andrew Bartlett.</para> </refsect1> </refentry>