Hello!! thanks for reply!
Whit the standard conf chroot don't work for me. I have make some probes and nothing. In addition, i "need" that only some users can use FTP (i.e. don't allow mail users), but only this (i.e. not ssh-> shell=/bin/false). Even i use AllowUsers in sshd_conf ... but... i want a system "very closed"
OH! i'm using slackware if it help !!
thanks again !!