That depends on the ftpd you're using. 

For proftpd:
 <Directory ~ftp/incoming>
        <Limit READ WRITE>
        DenyAll
        </Limit>
        <Limit STOR>
        AllowAll
        </Limit>
</Directory>

This sets up the directory ~ftp/incoming to give anyone the ability to
upload stuff. They can also get file listings. But they will not be able to
download anything. By changing the limits you should be able to get the
configuration you're looking for. If you're using wu-ftpd or some other
ftpd, I don't know. :)

--
Andy Zbikowski, Sys Admin   | (WEB) http://www.ltiflex.com
LTI Flexible Products, Inc. | (PH)  763-428-9119 (EX) 132
21801 Industrial Blvd       | (FX)  763-428-9126
Rogers, MN  55374           | (PCS) 612-306-6055
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