Could someone tell me if what I'm trying to do is possible with Samba? This authentication across trusted domains problem is driving me nuts. Please & thanks. My Samba server, cachalot: RedHat 7.2, Samba 2.2.3a, Winbind is running. Cachalot belongs to the NT domain PHS-SC, which trusts the NT domain FHCRC. Cachalot is added to the PHS-SC domain as a "workstation or server" via the Server Manager app. I can browse "My Network Places" and find cachalot, and its "homes" share, where my Linux home directory lives. My client is a PC running W2k Pro, I think SP2. It's on the same subnet as cachalot. The user, me, has NT user ID "cbenson" in the FHCRC domain. I also have user ID "imaginos" in Linux (NIS). /etc/samba/smbusers contains "imaginos = cbenson". If I map a network drive and specify user ID "imaginos" and my NIS password, it connects 100% reliably to the "homes" share. I use it this way every day. My goal is to NOT have to specify "imaginos" whenever I want to connect to my home directory on cachalot. This is a test case for the entire division of the company, so it's not just for my convenience. If I attempt to map a network drive without specifying a user ID, I always get this in my Samba log: [2002/02/20 13:52:09, 3] smbd/reply.c:reply_sesssetup_and_X(1018) No such user cbenson [FHCRC] - using guest account I know this is absurd, since of course I have to login to my PC as "cbenson" in the FHCRC domain! It also fails in the same way if I specify a user ID of "FHCRC\cbenson" or "FHCRC\cbenson". (But of course I should NOT have to specify any user ID, since I can map a network drive on an NT server that belongs to PHS-SC without doing so! If NT can do it, why not Samba?) Cachalot's /etc/samba/smb.conf contains: [global] encrypt passwords = yes hosts allow = 140.107. lm announce = false local master = false log file = /var/log/samba/log.smb debuglevel = 3 server string = Cachalot Samba Server %h smb passwd file = /etc/samba/smbpasswd socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 username = /etc/samba/smbusers wins server = 140.107.92.20,104.107.42.20 security = domain workgroup = PHS-SC password server = * allow trusted domains = yes printcap name = /etc/printcap load printers = yes printing = bsd winbind separator = \ winbind uid = 10000-20000 winbind gid = 10000-20000 winbind cache time = 15 winbind enum users = yes winbind enum groups = yes template homedir = /home0/%D/%U template shell = /bin/ksh winbind use default domain = true [homes] comment = Home Directories path = %H browseable = yes writable = yes valid users = cbenson, imaginos -- Carl Benson | cbenson@fhcrc.org UNIX System Administrator | Telephone: (206) 667-4862 Fred Hutchinson Cancer | Fax: (206) 667-6869 Research Center | Opinions expressed are my own.