I have a stand alone NT 4.0 Server w/IIS 4.0 and IE 6.0. I have the lastest service packs 6a. I'm using an external ip address. I have network gateway services installed. I'm using frame type 802.3. Under network neighborhood I can see somebody elses network and two workstations so I know they can see me. What do I need to remove or add to prevent them from seeing me? I know they have a Novell server "I think they have 802.2 setup for frame type" and I believe the two workstations are either XP or 2000