I think you are looking for chroot, not chmod.  Take a look here:

http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=chroot+ssh
----- Original Message ----- 
From: "John Daly" <jdalyaz2@cox.net>
To: <plug-discuss@lists.plug.phoenix.az.us>
Sent: Thursday, August 21, 2003 6:00 PM
Subject: jailing a user using ssh?


> Been trying to figure out how to do this. Thinking  I could use chmod
> for this? Reading the man, I just can't get it. So what I'm looking for
> is to only allow a user access to just one directory structure. Using RH
> 9.
> 
> 
> 
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