Great Circle Associates Firewalls
(December 1994)
 

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Subject: Multiple nets per interface ( was Re: Firewall and Linux )
From: Slava Kritov <scorp @ un . kiev . ua>
Date: Thu, 22 Dec 1994 12:40:57 +0200 (EET)
To: "Stephen D. Williams" <sdw @ lig . net>
Cc: Ken Hardy <ken @ bridge . com>, firewalls @ GreatCircle . COM
In-reply-to: <m0rK70F-0009xvC @ sdwsys>

Hi !

On Tue, 20 Dec 1994, Stephen D. Williams wrote:

> I'm sure it supports multiple interfaces, and therefore should be
> able to support as many as you can fit in the box (since any
> constant can easily be changed).
Right
> interface.  I was just told yesterday that BSDi or freeBSD can do
> that.  Since I thought it was standard for ethernet hardware to
Exactly
> support two addresses at most, I was surprised.  You would have to put
> it into promiscuous mode which causes the box to process all packets.
> I guess a modern machine can handle that.
And the problem I'm solving now is that we have two IP nets for one 
physical cable for now ( waiting for Routers to come ;)
I had to make ifconfig alias on server, and it results that any transfer 
between computers on the same cable but different IP's occurs through 
that aliased interface. That seems quite stupid, but could you offer any 
other solution  ( except, of course, aliasing all interfaces on all 
computers :) ) ?
Question is that one network is Freenet, and the other - UN office in 
Ukraine. I would certainly divide it into separate phys zones, but for 
now its the solutions. BTW all hosts on Freenet are connected via SLIP.

Thanx a lot
	Slava



References:
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From: padgett @ tccslr . dnet . mmc . com (A. Padgett Peterson, P.E. Information Security)
Next: Re: Firewall and Linux
From: Slava Kritov <scorp @ un . kiev . ua>
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From: sdw @ lig . net (Stephen D. Williams)
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From: Brent @ GreatCircle . COM (Brent Chapman)

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