Re: IPS Inline Mode

[Y M <snort () outlook com>]

How are the "other machines" and Snort are connected (same switch)? Is the interface on Snort connected to mirror port 
or something similar on the switch? Try running tcpdump and view the packets to verify if you see traffic from other 
machines. If not, then you need to configure mirroring port on the switch, to which the NIC on Snort box will be 
connected (promiscuous).
If you get the first problem sorted out, use the guide at http://s3.amazonaws.com/snort-org/www/assets/229/ids2ips.txt 
to help you with the inline mode using NFQ.
YM

Date: Fri, 20 Jun 2014 11:51:04 +0300
From: erdem () boryazilim com
To: snort-users () lists sourceforge net
Subject: [Snort-users] IPS Inline Mode

Hi, 
I am new on Snort
I installed with guide and run IDS mode.
I have two problems. 
Firstly, Snort handle only host machine packets. I write some rules example:
alert tcp any any -> any any (content:"www.facebook.com";msg:"Facebook Accessing";sid:1000001;)
This rule works only machine which installed Snort. Other machines accesses are not handled.

Other problem is Inline Mode.
I run with this command 
snort --daq nfq -Q -c /etc/snort/snort.conf  --daq-dir /usr/local/lib/daq --daq-var device=eth0 -i eth0


Snort gives this error
ERROR: Can't initialize DAQ nfq (-7) - The nfq DAQ module does not support interface or readback mode!
If I remove "-i eth0", Snort works but do not handle any packets

Thanks for replies
Good Works

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------------------------------------------------------------------------------
HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions
Find What Matters Most in Your Big Data with HPCC Systems
Open Source. Fast. Scalable. Simple. Ideal for Dirty Data.
Leverages Graph Analysis for Fast Processing & Easy Data Exploration
http://p.sf.net/sfu/hpccsystems

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