Hi Henrik I forgot to put in my last email the permissions of the pipe, in fact, my squid.conf have cache_effective_user squid cache_effective_group squid The perms on the pipe are drwxr-x--- 2 root squid 72 Apr 4 17:57 winbindd_privileged And the pipe perms are nbsf000si10:/var/lib/samba/winbindd_privileged# ls -l total 0 srwxrwxrwx 1 root root 0 Apr 4 17:57 pipe The directory of the pipe is /var/lib/samba/winbindd_privileged/pipe, is important the location of this file ? squid@nbsf000si10:~$ whoami squid squid@nbsf000si10:~$ wbinfo -t checking the trust secret via RPC calls succeeded squid@nbsf000si10:~$ /usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic Myuser mypass OK Any suggestion ? Regards, Mauricio -----Original Message----- From: Henrik Nordstrom [mailto:hno@xxxxxxxxxxxxxxx] Sent: Monday, April 04, 2005 6:15 PM To: Duran, Mauricio Cc: squid-users@xxxxxxxxxxxxxxx Subject: RE: [squid-users] Ntlm auth On Mon, 4 Apr 2005 duranm@xxxxxxxxxxxxxxx wrote: > I check wbinfo > nbsf000si10:/usr/src/samba-3.0.13/source# wbinfo -t > checking the trust secret via RPC calls succeeded > > I check the plain auth > > nbsf000si10:/var/log/samba# /usr/bin/ntlm_auth > --helper-protocol=squid-2.5-basic Myuser mypass > OK You should run this test as your cache_effective_user, not root. The most common error is lack of permissions on the winbind pipe. See the winbindd and ntlm_auth manuals. Regards Henrik