Great Circle Associates Firewalls
(January 1996)
 

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Subject: RE: Bastion netmask query
From: Kim Wohlert <Kim . Wohlert @ MAINZ . DK>
Date: Mon, 08 Jan 1996 11:11:01 +0100 (MET)
To: Firewalls @ GreatCircle . COM
Date-warning: Date header was inserted by MAINZ.DK

>From: "Kurt Buff (Volt Comp)" <a-kurtb @
 microsoft .
 com>
>Date: Thu, 4 Jan 1996 22:00:01 -0800
>Subject: RE: Bastion netmask query
>
>It seems to me that someone with half a brain (not me, I only have 1/4) 
>could write a simple program (PERL, VB, ??) that would take some input 
>(number of nodes, number of segments, network address(es), etc.) and output 
>some reasonable netmasking and segmenting suggestions, including 
>forbidden/unwise host addresses (due to broadcast address conflicts, etc.). 
>Does anyone know of such a beastie? Or would this really be such a hard 
>thing to write?
>

No, and someone did. It is called RFC 1878:

http://www.internic.net/rfc/rfc1878.txt

T. Pummill, B. Manning, "Variable Length Subnet Table For IPv4", 12/26/1995.
(Pages=8)


-Kim

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