We use pop ups to allow customers to print from their personal computers. Currently, they can submit a job, however if they type in a wrong password or username they do not get the error message that is returned. I know that this is not showing due to hardware firewalls, as the error message does appear if I move my computer onto the same subnet as our servers.
Does anyone know what ports I need to have in place and to which server components to show the error messages to a customer (and which direction - server > client, client > server, or both)? All I see about firewalls in the configuration guide under pop ups is port 515, which is open.