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Network Variables
From: "Seth Dunn" <seth () d2ms com>
Date: Mon, 29 Apr 2013 10:22:45 -0400

Hello,
I am running Snort on Windows 2008 Server R2

I am trying to figure out how I can bypass traffic that is being sent
from certain networks, since it is creating false-positives

Information on my setup.
My watched networks are:: 10.75.x.x/24 and 10.76.x.x/24
Now I also have two other networks, that are not being watched, but are
part of my companies network and setup.
They are:: 10.10.x.x/24 <- Office network
10.30.x.x/24 <- Remote VPN users

Originally I tried putting in a .bpf file, but that did not work.
(anyone know how to make it work?)


So I tried my HOME_NET like this::
[10.75.0.0/16,10.76.0.0/16,!10.10.0.0/24,!10.30.0.0/24]
That didn't work, snort still sent out alerts for the two networks.
So I put HOME_NET back to ::  [10.75.0.0/16,10.76.0.0/16]
And set EXTERNAL_NET to this::  [any, !10.10.0.0/24,!10.30.0.0/24], that
did not work
So I tried::  [any, [!10.10.0.0/24,10.30.0.0/24]], that did not work

 

Any ideas on what I can do to fix this?



My networks 10.75.x.x and 10.76.x.x are connected to the networks
10.10.x.x and 10.30.x.x via two Cisco PIX 515E's

 

Thanks,
Seth

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