This property specifies whether SSH-connection must be closed if the number of open tunnels goes to zero.
If this property is set to True, the SSH connection will be closed
immediately after the last logical tunneled connection is closed. This may be reasonable if
there are no more tunneled connections expected - for example, if only shell or command is
Set this property to False if you need to keep TElIdSSHClientServerIOHandler alive after the last tunneled connection is closed.
It's a good idea to set this property to False if local (or remote) port is forwarded, as there may be new connections accepted on this port, even if there are no active tunneled connections at the moment.
Default value is True.