search for: synchorinise

Hi ! I got a new problem, the company I work for had just open a new office with a network ADSL link to the old one. We have one domain controler (samba on linux) and 50 workstations in windows XP. I need to put a second domain controler at the new office, but I don't know how to link the both and then to synchronise them ? (account and passwd) And finaly, if I reach this point, how can I do