Samba supports intra domain user (and group ) autentication ? That is : I have a NT server that is the master domain for a DOMAIN. I have a samba server that is a master domain for another DOMAIN. I am interest in clients belonging to the first domain can see resources belonging to the second domain (on clients and on samba server). I don't know exactly how to works interdomain autentication but i think that nt server can do it. Regards, Paolo Tealdi Ing. Paolo Tealdi Library & News System Administrator Politecnico Torino Phone : +39-11-5646714 , FAX : +39-11-5646799 C.so D. degli Abruzzi, 24 - 10129 Torino - ITALY Email : tealdi@polito.it