If you wish to allow all connections for a particular network, add the network address to the list and select the corresponding check box in the Trusted column. Otherwise, if you want to remove a network address from the Trusted Zone, clear its check box. If you want to allow all NetBIOS communications—to and from a network address—make sure the corresponding box in the NetBIOS column is selected. To disallow all communications with the network, just clear the NetBIOS and Trusted check boxes. .