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Re: Network Variables
From: "Seth Dunn" <seth () d2ms com>
Date: Tue, 30 Apr 2013 19:28:28 -0400

Right, and I set up the text file, and snort started and read the file.
But it didn't filter out the traffic.
And I have followed the examples I have seen creating the file, but it
is not working as expected.

-----Original Message-----
From: Jeremy Hoel [mailto:jthoel () gmail com] 
Sent: Tuesday, April 30, 2013 5:38 PM
To: Seth Dunn
Cc: snort-users () lists sourceforge net
Subject: Re: [Snort-users] Network Variables

well snort reads a text file that contains the bpf filters.

I don't use snort in windows, but the same path structure that you use
to point to your rules, point to a text file containing the bpf filter
you want to run against.



On Tue, Apr 30, 2013 at 5:19 PM, Seth Dunn <seth () d2ms com> wrote:
Great.
Thank you for the confirmation.

Do you know how to set up bpf filters under windows?
I would like to go that route so I can fine tune things vs. just 
blocking out entire IP ranges.
But I have had no luck getting that to work.

-----Original Message-----
From: Jeremy Hoel [mailto:jthoel () gmail com]
Sent: Tuesday, April 30, 2013 11:26 AM
To: Seth Dunn
Cc: snort-users () lists sourceforge net
Subject: Re: [Snort-users] Network Variables

Yes..   since you are only negating some ip's, the rest that match
will
work.

On Tue, Apr 30, 2013 at 3:04 PM, Seth Dunn <seth () d2ms com> wrote:
Ok, I think I got it corrected.
I altered my EXTERNEL_NET variable to ::
[!10.30.0.0/24,!10.10.0.0/24] That seems to have stopped the 
false-positives, while still logging other traffic.
So I am assuming there is a default "any" aspect to this variable.



From: Seth Dunn [mailto:seth () d2ms com]
Sent: Monday, April 29, 2013 10:23 AM
To: snort-users () lists sourceforge net
Subject: [Snort-users] Network Variables



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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Get 100% visibility into your production application - at no cost.
Code-level diagnostics for performance bottlenecks with <2% overhead
Download for free and get started troubleshooting in minutes.
http://p.sf.net/sfu/appdyn_d2d_ap1
_______________________________________________
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Go to this URL to change user options or unsubscribe:
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