sftp without without a valid shell?

Hi List, I like to offer some customers a kind off sftp account but to deny any login to this accounts. So I thought about having /bin/false as shell in /etc/passwd but this prevents sftp to. What can I do? Thanks in advance Thom -- ------------------------------------------------------------------- bye bye (c) by Thom | Thorsten Marquardt | EMail: THOM@kaupp.chemie.uni-oldenburg.de | Member of the pzt project. | http://kaupp.chemie.uni-oldenburg.de/pzt -------------------------------------------------------------------