upload-only ftp server

[User Gandalf]

  Dear List,

I would like to install an ftp server. Some of the users want to upload 
files to the server. I would not like to start an ftp server at all, 
because I'm too paranoid. But my users demand it. I looked at the ports 
tree and I found many ftp servers. I cannot choose between them. Can you 
recommend one for me? I only need one ftp user (possibly with a 
password), and upload/list files only. The most important thing is 
security, and the ability to handle passive transfers.

Thanks,

   Laci