RE: [Freebsd-security] Re: Multi-User Security
From: Remko Lodder (remko_at_elvandar.org)
To: "Dan Rue" <firstname.lastname@example.org>, "David E. Meier" <email@example.com> Date: Tue, 18 May 2004 18:08:52 +0200
On Mon, May 17, 2004 at 02:08:40PM +0200, David E. Meier wrote:
> Hello list.
> I would like to get your opinion on what is a safe multi-user environment.
> The scenario:
> We would like to offer to some customers of ours some sort of network
> backup/archive. They would put daily or weekly backups from their local
> machine on our server using rsync and SSH. Therefore, they all have a user
> account on our server. However, we must ensure that they would absolutely
> not be able to access any data of each other at all.
> What is the "best and safest" way to do so? Regular UNIX permission
> settings? File system ACL's? User jails? Restricting commands in their
> path environment? Or would it even make sense to encrypt the file system?
> How would some of the solutions affect data backups/restore on our side?
D> You generally would like to avoid giving people shell (ssh) access if
D> you can avoid it. If you must give shell access, it is best to set up a
D> However, if you're just doing backup/file access - shell access isn't
D> necessary. You can do ftps, (ports/ftp/bsdftpd-ssl), and easily use
D> that to chroot users. You can do sftp (without ssh shell access), but
D> that's trickier to set up.
real tricky :-> scponly-3.8_1|/usr/ports/shells/scponly|/usr/local|A tiny
shell that only permits scp and
But not that hard.... ;-)
-- Kind regards, Remko Lodder Elvandar.org/DSINet.org www.mostly-harmless.nl Dutch community for helping newcomers on the hackerscene mrtg.grunn.org Dutch mirror of MRTG _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "email@example.com"