9666 Port-Forwarding For Click N Load Remote Usage

I've got JDownloader running on my HTPC and access it via VNC.The problem with Click'n'Load (CNL) is, JD only listens on localhost:9666 for incoming traffic, and the browser applications only send traffic to localhost:9666, so I can't use CNL with the VNC connection.I have to redirect my PC's localhost:9666 to the HTPC's localhost:9666

I've read up on SSH tunnels, but failed to set one up to work. I also know this could be done with iptables, but don't know how. Do you know a solution to make a connection between both local 9666 Ports? Traffic would have to be redirected from the PC listening on localhost:9666 to the HTPC, making it available at localhost:9666 and vice versa.