[Samba] ntlm_auth SID problem

[Marcello Mezzanotti]

Hello all

Im using a linux box running CentOS 4.1 as a proxy server with user
auth with an AD
Its working for a long time, but suddenly this weekend the users cant
authenticate anymore

looking on logs i obtain this

Oct 10 08:29:59 sol (ntlm_auth): [2005/10/10 08:29:59, 0]
utils/ntlm_auth.c:get_require_membership_sid(237)
Oct 10 08:29:59 sol (ntlm_auth):   Winbindd lookupname failed to resolve
VILLAS+SQUID into a SID!

searching for this error on google i tried on ntlm_auth command to
change the DOMAIN+GROUP to SID and with SID works fine


/usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic
--require-membership-of=VILLAS+SQUID
USER PASSWORD
[2005/10/10 12:18:53, 0]
utils/ntlm_auth.c:get_require_membership_sid(237)
  Winbindd lookupname failed to resolve VILLAS+SQUID into a SID!
ERR

and changing

/usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic
--require-membership-of=S-1-5-21-1390067357-573735546-682003330-1524
USER PASSWORD
OK

any guess?
thanks anyway
marcello

--
Marcello Mezzanotti <marcello.mezzanotti at gmail.com>
Information Security
UNIX / Linux / *BSD