port 5000, commplex-main
 

Internet Storm Center is showing a terrific increase in the number of hits
to port 5000, tcp, from 'commplex-main.' My Visual Zone is showing a
bunch. Zone Alarm is effectively blocking these attempts, however, there
are certain games and apps that utilize this port which may render it open
to attack.
Just a word of caution........
Heirloom, old and not even sure what it is