[Zope] FTP access and ssh-Port-Forward

Hi, I've got a problem with zope on Solaris system. I can access the ftp-Port from within the LAN (being either there or using ssh to connect to a server in the LAN) but not using a port forward for it. I can however use http-Portforwarding over ssh, but ftp-Portforwarding only gives me the possibility to login, the ls command "hangs" at entering Passive Mode. If I turn off passive mode I get error 425 Cant build data connection. Has somebody a soluting how to get ssh-forwarded ftp Access to Zope? Andreas -- You look tired.