YnHub - need help making a rule to allow DC++ hub

I recently switched from Zone alarm to Comodo Firewall. So far it seems like it was a great choice. I used to run a DC++ hub for my close friends (max 4 users), but with Comodo Firewall it doesn’t work. My friends can’t connect to it. I first had YnHub installed and it was working great with Zone Alarm. After uninstalling ZA and installing Comodo, my friends can’t connect to my hub. I have not made any changes to the settings in YnHub. I really would like to use Comodo Firewall and I’m sure there is a way to fix this. I would greatly appreciate any help. Thanks in advance.