Summary
This host appears to be running Wollf on this port. Wollf Can be used as a Backdoor which allows an intruder gain remote access to files on your computer. If you did not install this program for remote management then this host may be compromised.
An attacker may use it to steal your passwords, or redirect ports on your system to launch other attacks
Solution
see www.rapter.net/jm4.htm for details on removal