begheraida

I have several computers and a server hosted in a datacenter ( with high bandwith ) . My idea was to force each computer to talk ONLY to the server . So I have defined this server as a "Predefined Host" and also unchecked "Use relay server when required" and unchecked "Use Tracker Server" ... but is does not work as expected ( Each computer continue to talk to each other ) Did I misunderstand something ? Thanks in advance for your help ... Danny