Re: Connecting two seperate networks with OpenBSD

[Clarence <c5666305@hkstar.com>]

On Fri, 7 Jun 2002, Dan Sveen Olsen wrote:

> > -----Original Message-----
> > From: Clarence [mailto:c5666305@hkstar.com]
> > Sent: 7. juni 2002 12:49
> > To: Dan Sveen Olsen
> > Subject: Re: Connecting two seperate networks with OpenBSD
> > 
> > 
> > 
> > 
> > On Fri, 7 Jun 2002, Dan Sveen Olsen wrote:
> > 
> > > Hi,
> > > 
> > > We are testing a scenario where two seperate networks are 
> > to be connected
> > > together. Either side can't control the other side, so 
> > matching ip addresses
> > > might occure and NATing has to done.
> > > 
> > > We have two computers, both with the same ip address 
> > (1.1.2.2), on the far
> > > side of each network. Is it possible with OpenBSD 3.1 and 
> > pf to do the
> > > following:
> > > 
> > 
> > If there is a packet send from the left side of the network 
> > to 1.1.2.2,
> > which 1.1.2.2 (left side one or the right side one) should it 
> > be sent to.
> > I think one of the 1.1.2.2 should be changed to other ip if 
> > it is possible
> > to do so.
> 
> That is something we can't do. And that's why we have created aliases for
> each side, just to seperate the networks in some way. So when either side
> wants to communicate to the other side, they have to use the aliases.
> 

Oh! you are facing a hard problem. If the collision of the ip at both
networks are large, it is not easy to manage the ip and may cause the
predict problem.  

Clarence