FTP through SSH

Hi! I would like to connect to my FTP Server wich is running on my Linux Server.. The Ftp server can only be reached via SSH Tunnel cause the firewall doesn't permit the packets through. The FTP server is ony for emergeny file access. I can connect to the FTP server if I do a port forward of port 21, but I the ftp server can't send me the file list cause I need an second port. How I can configure these ports? I use wu.ftpd and for example CuteFTP or FTP Voyager on Windows Machine. the FTP-server error message: 500 Illegal PORT Command 500 Can't build data connection: no PORT specified Please help me.. How I can define static ports for ftp ? thanks, chris