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Re: capturing on the wrong nic
From: Russ Combs <rcombs () sourcefire com>
Date: Tue, 19 Oct 2010 09:10:57 -0400

On Mon, Oct 18, 2010 at 8:56 PM, Chris Copeland <roninuta () gmail com> wrote:

 I used the following guide:

http://it.thelibrarie.com/weblog/2010/06/installing-snort-on-ubuntu-10-04/

 but when I was testing to start snort I used the command: snort -c
 /etc/snort/snort.conf -i eth1


Do you see the traffic you want when you run snort -devi eth1 or with snort
-devi eth0?


 did I miss something?

On Mon, Oct 18, 2010 at 7:48 PM, Joel Esler <jesler () sourcefire com>
wrote:
You can specify the interface that Snort is listening on by using the -i
command line tag.

like snort -i eth0 or snort -i eth1.

Joel

On Oct 18, 2010, at 8:41 PM, Chris Copeland wrote:

Yep, total newbie here, but I have managed to do the following:
install LAMP, install snort, configure 2 eth devices, install base,
and capture traffic, the only problem is that it is traffic on the
management nic, not the nic I have plugged in to my hub (the one I
want sniffing).

topology:
cable modem
-> hub -> snortTest
-> hub -> firewall/wireless router -> home network devices

I know this has to be a setting in the conf file, at least I think it
does.

My internal IP: 10.0.1.15
from the snort.conf:
var HOME_NET 10.0.1.0/24
var EXTERNAL_NET any

eth0 - management nic
eth1 - sniffer nic

what am I doing wrong?

Thanks in advance!!!


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--
Joel Esler
302-223-5974



--
Chris Copeland
clcopeland () pluto dsu edu
chris () chriscopeland com
817.791.6728 cell
KF5BND


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Flex(R) Builder(TM)) enable the development of rich applications that run
across multiple browsers and platforms. Download your free trials today!
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