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Date:      Thu, 11 Oct 2001 12:20:44 -0400
From:      "John Holstein, IS" <jholstein@cnpapers.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: gateway and multiple subnets update
Message-ID:  <5.1.0.14.2.20011011121616.041a9ad8@mail.cnpapers.com>
In-Reply-To: <5.1.0.14.2.20011011085700.0424d628@mail.cnpapers.com>
References:  <20011010203259.S387@blossom.cjclark.org> <5.1.0.14.2.20011010141951.0419e750@mail.cnpapers.com> <5.1.0.14.2.20011009143853.041e3ec8@pop.cotse.com> <5.1.0.14.2.20011009143853.041e3ec8@pop.cotse.com> <20011009232857.D387@blossom.cjclark.org> <5.1.0.14.2.20011010141951.0419e750@mail.cnpapers.com>

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At 08:59 AM 10/11/2001 -0400, you wrote:
>At 08:32 PM 10/10/2001 -0700, you wrote:
>>On Wed, Oct 10, 2001 at 02:47:16PM -0400, John Holstein, IS wrote:
>> > At 11:28 PM 10/9/2001 -0700, you wrote:
>>
>>[snip]
>>
>> > >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 -----}
>> >
>> > This is exactly what I need to do.
>> >
>> > >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).
>> >
>> > I think I am missing something. I have done the above, completely,
>> > including adding the routes to rc.conf but if I sit a box on _any_ subnet
>> > other than 192.9.200 (the same subnet as ed0), I cannot get out.
>>
>>OK, then the picture is not right. It should be (?),
>>
>>   192.168.0.x --}
>>   192.168.1.x --}-Cisco Router-{ 192.9.200.x }-|ed0 FreeBSD GW ed1|- 
>> internet
>>   192.9.205.x --}
>>
>>In this case, you need to take the references to 192.9.205.0 out of
>>the routing stuff. (Sorry about the "192.168" typos where I should have
>>put "192.9" in there. 192.9.205.0 is owned by Sun Microsystems,
>>BTW. That you?)
>>
>>I'm sensing that you may not have your various networks properly
>>subnetted here. Could _you_ draw us a picture with all of the
>>networks (including masks) and gateways?
>>--
>>Crist J. Clark                           cjclark@alum.mit.edu
>>                                          cjclark@jhu.edu
>>                                          cjc@freebsd.org
>
>
>
>At http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/bridging.html 
>down near section:
>17.3.3.3 Firewall Support
>
>It is mentioned that a firewall option should be enabled to handle non-ip 
>bridging. Where does the option IPFIREWALL_DEFAULT_TO_ACCEPT go? ipf.rules?
>
>
>
>John Holstein
>
>



I am now able to ping the FreeBSD box from any IP on any of the four 
subnets. I figured out a routing problem. As far as I can tell, when 
setting the route, you must:

route add -net xxx.xxx.xxx.xxx -interface ed0

and the subnet mask as stated in the ifconfig line for ed0 in rc.conf must 
be open enough to allow the broad spectrum of subnets through.

next problem:

I still can't get the FreeBSD to gate _any_ of the subnets from ed0 to ed1.

before setting up the routing, it would work fine on a single subnet.

still leaning toward a bridge, any thoughts?


John Holstein



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