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Date:      Wed, 8 Jun 2011 11:30:02 -0400
From:      Alejandro Imass <ait@p2ee.org>
To:        =?ISO-8859-1?Q?Erik_N=F8rgaard?= <norgaard@locolomo.org>
Cc:        "questions@FreeBSD.org Questions" <questions@freebsd.org>
Subject:   Re: How to restrict jail's network access?
Message-ID:  <BANLkTikHNkMiFWESqftS9Jqh3J358cZOfA@mail.gmail.com>
In-Reply-To: <4DEF8C23.5010707@locolomo.org>
References:  <4DEF8C23.5010707@locolomo.org>

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On Wed, Jun 8, 2011 at 10:50 AM, Erik N=F8rgaard <norgaard@locolomo.org> wr=
ote:
> Hi:
>
> I'm planning to move services to run in jails. Two jails:
>
> 1: Mail related: postfix, cyrus imap and openldap
> 2: Web related: apache and postgresql
>
> No service should be able to connect out of the jail to remote hosts, exc=
ept
> for postfix that need to connect out to port 25 for delivery to other
> domains.
>

Jails usually run in a private network by default, each has a private
IP which is alias of the lo device
In fact you usually have explictly NAT ports from the base system to the Ja=
ils.

Try EzJail (yep. easy piecy as it's name suggests) and check-out these
references:

http://erdgeist.org/arts/software/ezjail/
http://www.freebsddiary.org/ezjail.php
http://www.scottro.net/qnd/qnd-ezjail.html
http://www.bsdguides.org/guides/freebsd/security/manage_jails


Best,

--
Alejandro Imass

P.S. you can always hire you initial set-up/training, I'm sure many
here would be more than happy to do so ;-)



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