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From: klavs klavsen (kl_at_vsen.dk)
Date: Thu 14 Feb 2002 - 13:25:40 GMT


Hi guys,

I need to install and maintain 6 kind of servers.

1, with samba and openldap, 1 with Postfix, courier-imap, OpenLdap and
Apache and so forth.

what i wanted to do, is to have them all installed on 1 physical
machine, under each vserver.

I was thinking, that it would be a good idea to chroot each service on
each server, so that a vulnerability in one, doesn't put the other
services on that machine in danger. Unfortunately chroot is not safe
(see earlier mail on this list).

I've read the docs on the site, but it's not really clear to me if can
do this, and how this compares to doing the same with chroot (except for
the fact that chroot is not safe and vserver is :-)

My questions therefore are these:

Can I "chroot" each service on each vserver - without having to create a
new vserver (with a new IP) for each service?

In the case of postfix and courier-imap can two "chroot" jails share the
same files (the maildir)?

A final question, if I install ssh on each vserver - and the services
are chrooted - will the ssh-users still be able to configure them? -
they would with a normal chroot, so that shouldn't be a problem?

-- 
Regards,
Klavs Klavsen

-------------| This mail has been sent to you by: |------------ Klavs Klavsen - OpenSource Consultant kl_at_vsen.dk - http://www.vsen.dk

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