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Date:      Thu, 29 Nov 2007 15:33:26 -0500
From:      =?iso-8859-1?Q?F=E9lix_Langelier?= <felix.langelier@notarius.com>
To:        <freebsd-questions@freebsd.org>
Cc:        Josh Paetzel <josh@tcbug.org>, "Philip M. Gollucci" <pgollucci@riderway.com>
Subject:   RE: Network Configuration with Jails. [Resolved]
Message-ID:  <A528456BFBC1394FB0C91228BD4BC31FD412C3@emilie.notarius.lan>
In-Reply-To: <200711281501.32594.josh@tcbug.org>
References:  <A528456BFBC1394FB0C91228BD4BC31FD4110C@emilie.notarius.lan> <474D7759.2070200@riderway.com> <200711281501.32594.josh@tcbug.org>

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> > Hello,
> >
> > I run a FreeBSD Jailer and I want to have multiple jails in 2=20
> > seperate networks. The server has 2 network interfaces and each of=20
> > them are connected in a different network. Say vlan1 and vlan2.
> >
> > My problem is that all the network traffic is going through the=20
> > first interface (vlan1). What I need is that a jail in vlan1 can't=20
> > communicate with a jail in vlan2 (and vice-versa).
> >
> > Is it possible to split the network traffic in the right interfaces=20
> > and use a diffrent default gateway for each of them ?
> >
> > Here is my /etc/rc.d configuration.
> >
> > defaultrouter=3D"192.168.1.1"
> >
> > static_routes=3D"vlan1 vlan2"
> > route_vlan1=3D"-net 192.168.1.0/24 192.168.1.1"
> > route_vlan2=3D"-net 192.168.2.0/24 192.168.2.1"
> >
> > # vlan1 interface config.
> > ifconfig_bge0=3D"inet 192.168.1.10 netmask 255.255.255.0"
> > ifconfig_bge0_alias0=3D"192.168.1.11 netmask 255.255.255.255"
> >
> > # vlan2 interface config.
> > ifconfig_bge1=3D"inet 192.168.2.10 netmask 255.255.255.0"
> > ifconfig_bge1_alias0=3D"inet 192.168.2.11 netmask 255.255.255.255"
> >
> > I tried to remove the default gateway but then the server was=20
> > unreachable. I am thinking of using pf to resolve my issue.
> >
>
>PF is probably the way to go.  In particular using route-to to send =
traffic originating from 192.168.2.0/24 to 192.168.2.1
>
>I'm not totally sure what your static routes even accomplish.  The =
kernel will establish routes for directly connected networks =
automatically.
>
>So probably some rules of interest....
>
># keep jails from talking to each other
>block in on bge0 from 192.168.2.0/24 to 192.168.1.0/24 block in on bge1 =
from 192.168.1.0/24 to 192.168.2.0/24
>
># ignore the default route
>pass out route-to (bge1 192.168.2.1) from 192.168.2.0/24 to ! =
192.168.2.0/24 \
>     keep state
>
># redundant because of the default route # which actually does what we =
want pass out route-to (bge0 192.168.1.1) from 192.168.1.0/24 to ! =
192.168.1.0/24 \
>      keep state

It's working perfectly.

Thanks Josh !

--
Felix Langelier
Unix Sysadmin
felix.langelier@notarius.com



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