Apparently my home router is listening on port 5001:
Nmap scan report for 192.168.1.1 (192.168.1.1) Host is up (0.018s latency). Not shown: 997 closed ports PORT STATE SERVICE 80/tcp open http 5001/tcp open commplex-link 52869/tcp open unknown
I tried googleing for port number (5001) and protocol (commplex-link) but couldn't find any clarification.
Does any body know what is that protocol or if it exists as a standard? Link to documentation would be nice.