ntlm_auth4 1 Samba User Commands 4.0 ntlm_auth4 tool to allow external access to Winbind's NTLM authentication function ntlm_auth4 -d debuglevel -l logdir -s <smb config file> This tool is part of the samba 7 suite. ntlm_auth4 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). The winbindd 8 daemon must be operational for many of these commands to function. 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. --helper-protocol=PROTO Operate as a stdio-based helper. Valid helper protocols are: squid-2.4-basic Server-side helper for use with Squid 2.4's basic (plaintext) authentication. squid-2.5-basic Server-side helper for use with Squid 2.5's basic (plaintext) authentication. squid-2.5-ntlmssp Server-side helper for use with Squid 2.5's NTLMSSP authentication. Requires access to the directory winbindd_privileged in $LOCKDIR. The protocol used is described here: http://devel.squid-cache.org/ntlm/squid_helper_protocol.html ntlmssp-client-1 Cleint-side helper for use with arbitary external programs that may wish to use Samba's NTLMSSP authentication knowlege. 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. gss-spnego Server-side helper that implements GSS-SPNEGO. This uses a protocol that is almost the same as squid-2.5-ntlmssp, but has some subtle differences that are undocumented outside the source at this stage. Requires access to the directory winbindd_privileged in $LOCKDIR. gss-spnego-client Client-side helper that implements GSS-SPNEGO. This also uses a protocol similar to the above helpers, but is currently undocumented. --username=USERNAME Specify username of user to authenticate --domain=DOMAIN Specify domain of user to authenticate --workstation=WORKSTATION Specify the workstation the user authenticated from --challenge=STRING NTLM challenge (in HEXADECIMAL) --lm-response=RESPONSE LM Response to the challenge (in HEXADECIMAL) --nt-response=RESPONSE NT or NTLMv2 Response to the challenge (in HEXADECIMAL) --password=PASSWORD User's plaintext passwordIf not specified on the command line, this is prompted for when required. --request-lm-key Retreive LM session key --request-nt-key Request NT key --diagnostics Perform Diagnostics on the authentication chain. Uses the password from --password or prompts for one. --require-membership-of={SID|Name} Require that a user be a member of specified group (either name or SID) for authentication to succeed. 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. 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 This example assumes that ntlm_auth4 has been installed into your path, and that the group permissions on winbindd_privileged are as described above. 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. auth_param ntlm program ntlm_auth4 --helper-protocol=squid-2.5-ntlmssp --require-membership-of='WORKGROUP\Domain Users' auth_param basic program ntlm_auth4 --helper-protocol=squid-2.5-basic --require-membership-of='WORKGROUP\Domain Users' If you're experiencing problems with authenticating Internet Explorer running under MS Windows 9X or Millenium Edition against ntlm_auth4's NTLMSSP authentication helper (--helper-protocol=squid-2.5-ntlmssp), then please read the Microsoft Knowledge Base article #239869 and follow instructions described there. This man page is correct for version 3.0 of the Samba suite. 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. The ntlm_auth4 manpage was written by Jelmer Vernooij and Andrew Bartlett.