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Date:      Mon, 23 Apr 2001 10:57:29 -0500 (CDT)
From:      Nick Rogness <nick@rogness.net>
To:        Daniel Mester <DanielM@EverAd.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: natd question
Message-ID:  <Pine.BSF.4.21.0104231040250.23089-100000@cody.jharris.com>
In-Reply-To: <ED917D1F7E5D96439A2822CE966C2CB909088A@ilexc01.everad.com>

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On Mon, 23 Apr 2001, Daniel Mester wrote:

> Hello all,
> i am trying to set up the nat between two networks. 

> 
> What i have:
> 10.72.6.0/24 ------- 10.72.7.0/24

	Are these 2 networks directly connected via a cross-connect or ?
	Where does the BSD machine reside...in the middle, connecting the
	2 network together?

> But in my specific situation i need the nat-addresses to be different
> from interface address of my machine (there's two net cards -
> 10.72.6.1 & 10.72.7.1). I actually would like to know how i can set up
> pool of addresses used by natd for translations (as in cisco "ip nat
> pool dynapool 10.72.8.1 10.72.8.64" etc).

	There is no "pool" option with natd.  You have static nat or
	"overloaded" natd.  ALthough, I would hope that future versions of
	nat implement a pool style technique.

> Because machines on 10.72.7.0 network have to get packets as it comes
> from 10.72.8.0 (for example) and not from 10.72.6.0 network because of
> asymmetric routing in the lab.

	Why do they have to get packets from 10.72.8.0?  WHy do you need
	nat, if there is 1 BSD machine tied to both networks, this is just
	basic routing across the interfaces.

	Let me see if I understand you correctly:

	10.72.6.0/24-- BSD --10.72.7.0/24

	Correct?  

	What is the default gateway entry on the machines in the 10.72.7.0
	network? How about 10.72.6.0?

> I've seen 'alias_address' option but i don't really understand how it

	It is similar to Cisco's overload.  All outbound ip's will be
	overloaded to having a source address of alias_address.


Nick Rogness <nick@rogness.net>
 - Keep on Routing in a Free World...
 "FreeBSD: The Power to Serve!"



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