How to add DC++ Hub as service?

I have DC HUB in LAN and I would liek Dude to monitor it.

Ive added new service:

Name: dc-hub
Type: TCP
Agent: default
Port: 411
Connect only: checked

Dude reports no connection with specified device.

However, when I telnet to the same device on port 411 it connects and I can see server response.

What am I doing wrong?