At 11:20 AM 4/11/2007, Thiago Esteves de Oliveira wrote:
Thanks for the suggestion. I intend to study about this possible solution
but to save time I'd
like to ask you some questions.
With this software, can I control which accounts "from the unix passwd
file" will be able to log in?
Yes just set the shell to a non-login shell for users you don't want to
give shell access. Typically I set those user's shell to:
/usr/bin/false
If there is a symbolic link in the home directory(jail/chroot) that point
to anywhere out of it,
will the users be able to use this symlink? Will they go out from their
jail/chroot directory this
way?
You can actually specify what ftp commands are allowed in the vsftpd.conf file
in one server I manage I have set:
cmds_allowed=PASV,RETR,QUIT,USER,PASS,STOR,CDDN,CWD,LIST,GET,PUT,DIR,PWD,SYST,LS,TYPE,DELE,FEAT,PBSZ,PROT
But you'd probably want to remove any symlinks that shouldn't be there.
Derek Ragona wrote:
> At 10:28 AM 4/10/2007, Thiago Esteves de Oliveira wrote:
>>Hello,
>>I want to use the chroot/jail mechanism in user's ssh and sftp
>>connections. I've read some
>>tutorials and possible solutions to jail/chroot the users into their
own home directories. One
is
>>to install the openssh-portable(with chroot option turned on) from the
ports collection. I've
installed the openssh-portable, but the jail/chroot mechanism didn't work.
I think it requires
some configuration in its sshd_config file, but I'm not sure because I
have found nothing about
jail/chroot in the openssh(sshd_config) man pages.
>
> I have implemented a similar setup using vsftpd from the ports. It
works well for secure ftp
when used with the filezilla client. You can limit the ftp command in the
vsftpd configuration
file so users cannot get out of their home directories, which chroots them
there. You do need to
add one thing to the accounts, which is to change their home directory in
/etc/passwd adding an
additional dot. For instance if a users home directory is:
> /home/user
>
> You'd need to change it to:
> /home/./user
>
> vsftpd is well documented and relatively easy to get setup and running.
>
> -Derek
>
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