Once a connection has been created it may still be necessary to define the port and other properties for the connection. This is a common cause of connection problems.
You can monitor and change the properties of your connection in the Properties view, to open from the workbench menu go to Window > Show View > Properties. Some values are read-only, and you can change others, such as the description or the server name. Although each Remote System Explorer subsystem maintains its own list of properties, three properties (connected or disconnected, port, and user ID) are shared among all subsystems. If you change any of these properties in one subsystem, the other subsystems reflect the change.
Select a subsystem and check the Properties view to see the shared properties for all of your subsystems. For example, the Connected value is Yes or No for all of your subsystems under one connection.
It is also possible to view and edit the Properties of the subsystems using the Remote System Details view. To do this right click on a connection in the Remote Systems view and select Show In Table.
In review, there are various methods for changing the properties for a connection: