This needs to be setup properly if you want output from more than one host on the screen. It is really a host problem, you should talk to the remote host system manager if you have a problem. Talking to a single host at a time should fine, but use this tool to check that the ``Host Access Control List'' is set to File and edit the file to select the allowed hosts. Also ensure that the ``Allow Clients To Modify Host Access Control List'' box is ticked.