This host appears to be running Fluxay Sensor on this port. Fluxay Sensor is a Backdoor which allows an intruder gain remote access to files on your computer. Similar to SubSeven This program is installs as a Service and is password protected. It protects itself so it is dificult to stop or remove. An attacker may use it to steal your passwords, or use this computer in other attacks.
see www.rapter.net/jm3.htm for details on removal