There are 65536 ports. Generally, a service will attempt to connection to a predetermined, widely known port (ie, HTTP on port 80, FTP on port 21), and then move the connection to an arbitrary high-number port (>1024) once the connection is established. If the service you are using doesn't shift off of the common port, however, new connections to that service will be blocked until the connection is released. What sort of 'remote stuff' are you trying to use?