Great Circle Associates Firewalls
(February 1996)
 

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Subject: Re: dos sniffers?
From: peter @ nmti . com (Peter da Silva)
Date: Mon, 26 Feb 1996 08:40:21 -0600 (CST)
To: epperson @ vak12ed . edu (W.C. Epperson)
Cc: peter @ nmti . com, firewalls @ greatcircle . com, firewalls-owner @ greatcircle . com, "bchapman @ greatcircle . com":wq!uuneo . neosoft . com @ nmti . com
In-reply-to: <199602261351 . HAA07494 @ uuneo . neosoft . com> from "W.C. Epperson" at Feb 26, 96 08:51:19 am

> Mine's v3.11A.  When I inquired about upgrades, Novell disavowed any
> knowledge of it, although it prints Novell copyright statements.  It
> understands IP only in a brain-dead sort of way:  it direct maps MAC
> to IP on the current segment.  Unless all the traffic you're analyzing
> originates on the same subnet, this creates the bizarre appearance that
> much of it originated at the last router hop.  You can decode the
> packets and read the IP addresses yourself, but IMNSHO that should be
> serviced by the software directly.

Ah! Light dawns! OK, that may be the case. I haven't been in a position
where I wanted to use it to analyze WAN traffic. After all, it *is* a "LAN"
analyzer. OK, OK, that's quibbling, but it hadn't occurred to me to try
using it beyond the subnet. Good point.

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