I am interested in finding out user name / group name for a given SID. Can winbind provide that information assuming the cifs server which exports a share is either not in the same doamin as specified in the smb.conf on the linux SMB/CIFS client machine or is a stand alone machine, if presented with an SID and tcp host? Once a user name or group name for an SID is obtained, I would like winbind to map it to a uid or gid respectively as per smb.conf and store the mapping in the backend specified in smb.conf. Can the host be any kind of CIFS/SMB server (Samba, Windows etc.)? Otherwise, I may have to do DCERPC calls over named pipes like lsa and samr to resolve sids to user/group names. Thanks. Regards, Shirish