Date: Tue, 9 Oct 2001 23:28:57 -0700 From: "Crist J. Clark" <cristjc@earthlink.net> To: "John Holstein, IS" <jholstein@cnpapers.com> Cc: questions@FreeBSD.ORG Subject: Re: gateway and multiple subnets Message-ID: <20011009232857.D387@blossom.cjclark.org> In-Reply-To: <5.1.0.14.2.20011009143853.041e3ec8@pop.cotse.com>; from jholstein@cnpapers.com on Tue, Oct 09, 2001 at 02:43:53PM -0400 References: <5.1.0.14.2.20011009143853.041e3ec8@pop.cotse.com>
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On Tue, Oct 09, 2001 at 02:43:53PM -0400, John Holstein, IS wrote:
> I am setting up a test firewall where I want to pass multiple subnets from
> ed0 to the internet connection on ed1.
>
> For instance:
>
> 192.168.0.x ----->
> 192.168.1.x ----->
> -----> ed0 FREEBSD BOX ed1 -------> internet
> 192.9.200.x ----->
> 192.9.205.x ----->
>
> What is the best way to go about this, without the use of a designated
> gateway on each subnet.
>
> set the subnet mask of ed0 to 0.0.0.0?
>
> I don't need to alias the gateway addresses of all the subnets, the subnets
> in question are not looking for a particular out... they are being routed
> from a cisco router, looking at ed0 to be the out, but the old box that was
> in place, a Cisco Pix, was passing everything.....
So, are you saying the real picture is,
192.168.0.x -----}
192.168.1.x -----}
}--Cisco Router--|ed0 FreeBSD GW ed1|---- internet
192.9.200.x -----}
192.9.205.x -----}
If that's the case, you just need to add the routes on the FreeBSD
gateway,
# route add net 192.168.0.0 <Cisco Router IP>
# route add net 192.168.1.0 <Cisco Router IP>
# route add net 192.168.200.0 <Cisco Router IP>
# route add net 192.168.205.0 <Cisco Router IP>
Where <Cisco Router IP> is the IP address of the router's interface on
the network with the FreeBSD box's ed0.
To load these at boot, put something like,
static_routes="0 1 200 205"
route_0="net 192.168.0.0 <Cisco Router IP>"
route_1="net 192.168.0.0 <Cisco Router IP>"
route_200="net 192.168.200.0 <Cisco Router IP>"
route_205="net 192.168.205.0 <Cisco Router IP>"
In rc.conf(5).
--
Crist J. Clark cjclark@alum.mit.edu
cjclark@jhu.edu
cjc@freebsd.org
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