Date: Tue, 19 Oct 1999 10:26:50 -0700 (PDT) From: Brian Beattie <beattie@aracnet.com> To: Nick Rogness <nick@rapidnet.com> Cc: "Zuidam, Hans" <Hans.Zuidam@nl.origin-it.com>, "'hackers@freebsd.org'" <hackers@FreeBSD.ORG> Subject: Re: natd question Message-ID: <Pine.LNX.4.10.9910191020170.24214-100000@shell2.aracnet.com> In-Reply-To: <Pine.BSF.4.05.9910191019310.99921-100000@rapidnet.com>
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On Tue, 19 Oct 1999, Nick Rogness wrote:
> On Tue, 19 Oct 1999, Zuidam, Hans wrote:
>
> > I want to set up a test network which (partly) mirrors our production
> > side network. To match reality as close as possible we keep the IP
> > addresses in the test network the same as in the production network. In
> > order not to run around with tapes between the two networks, I would like
> > to create the following setup:
> >
> > (~~~~~~~~~~) (~~~~~~~~~~)
> > ( ) +---------+ ( )
> > + + | | + +
> > ( 130.144.120/22 ) ------ | FreeBSD | ------ ( 130.144.120/22 )
> > + (real) + | | + (test) +
> > ( ) +---------+ ( )
> > (~~~~~~~~~~) (~~~~~~~~~~)
>
>
> You can't split 2 identical networks, with identical
> netmasks across 2 interfaces unless you are running some sort of
> BRIDGE or transparent proxy support. Even then, if you have the
> same IP's on both networks you will run into problems with routing
> and ARP entries on the FreeBSD machine.
>
> If you are looking to connect the 2 networks together, run a
> different ip range on the (test) network, like the 10.0.0.0
> or 192.168 network. If you are not connecting to the internet then
> you will not need to run NATD, just make sure that the
> gateway address of the machines on both sides are pointing to the
> corresponding FreeBSD interface IP.
>
>
How about:
(~~~~~~~~~~) (~~~~~~~~~~)
( ) +-------+ +-------+ ( )
+ + | | | | + +
( 130.144.120/22 ) -- |FreeBSD| ---- |FreeBSD| --( 130.144.120/22 )
+ (real) + | | | | + (test) +
( ) +-------+ +-------+ ( )
(~~~~~~~~~~) (~~~~~~~~~~)
Using 10.0.0.0 on the network in the middle
Brian Beattie | The only problem with
beattie@aracnet.com | winning the rat race ...
www.aracnet.com/~beattie | in the end you're still a rat
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