sftp or webdavs not working

Hi,

I have some users interested on uploading several files in
once. I have 
played a little bit with the webdav and ftp features. They
are working 
fine but our security guy don't let us to open those ports
and use it 
without being encrypted.

I have tried two options but it doesn't seem to work for
me.

i) I tried to stunnel the ftp or webdav but it hanged. I
tried to 
stunnel any other thing like normal port 80 and it works but
I couldn't 
make it for those.
ii) I have created a virtual host for the webdav and created
a 
RewriteRule to redirect it but I honestly don't know
exactly where to 
redirect it.
If my application is running an instance called APPS

 RewriteCond % ^my_virtual_host_name(.*) [NC]
 RewriteRule ^/(.*) 
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