Help with firewall configuration and mpd

Hello, I've installed mpd on my SUSE computer, and I want to use ncmpc on a remote computer to connect to the daemon. I've tried configuring the firewall from YaST, however, I don't know what settings to change, and where to change them. External zone? I know it's the 6600 port, and I've been to the "allowed services" section of the firewall settings, and I added 6600 tcp to "Additional allowed ports", but nothing else. Nothing happened, and when I nmap the "server" it only shows ssh. Some help here please? Regards Jon Jahren