Force client authentication

Hi,
 
I did a quick search to see if lftp supports mutual authentication.
Here is what I found. . . As I am still learning this, please excuse any
gaps in understanding.  
From what I can tell from this post
(http://www.mail-archive.com/[email protected]/msg02214.html) client
authentication is supported.  This way, if a server forces mutual
authentication lftp will support client authentication.  However, is
there a way to force mutual authentication from the client side (thus
requiring client authentication)?  If so how?  Thanks for your advice in
advance!  
 
Below is what I find for forcing one-way authentication (server
authentication).  
 
     ssl:verify-certificate (boolean)
          if se to yes, then verify server's certificate to be signed by
a known Certificate Authority and not be on Certificate Revocation List.

 

Shannon