limited shell access

[kalin mintchev]

hi all..

is it possible to limit access for certain users only to a certain
directory tree - other then his/her home directory?

for example joe logs into his home directory where there is a symbolic
link to some other directory on the system but he can not go up a level
(to /home or / ) or anywhere else but home and the directory under the
symlink...

i looked at the ssh and sshd confs but apparently nothing there...  still
looking...

thanks....