Snort mailing list archives

Re: Snort-users Digest, Vol 108, Issue 2


From: "Al Lewis (allewi)" <allewi () cisco com>
Date: Sun, 3 May 2015 23:13:49 +0000

Hello,

                What is the command that you are using to start snort? Please see the section in the daq readme for 
AFPacket also.

Thanks!

Albert Lewis
QA Software Engineer
SOURCEfire, Inc. now part of Cisco
9780 Patuxent Woods Drive
Columbia, MD 21046
Phone: (office) 443.430.7112
Email: allewi () cisco com

From: Abdallah Jabbour [mailto:abdjbr () gmail com]
Sent: Sunday, May 03, 2015 6:56 PM
To: snort-users () lists sourceforge net
Subject: Re: [Snort-users] Snort-users Digest, Vol 108, Issue 2

all the lab is on a KVM host with regular bridge ( bridge-utils on CentOS ) . it seems that whenever the snort service 
start it will bridge the interfaces together causing the network connections to drop even if i specify a non-ip 
interfaces :
INTERFACE=eth0.1:eth1.1
where eth0.1 and eth1.1 are another two virtual interfaces on the snort guest with no ip address .
i don't have port mirroring in place ( that why i tried inline mode ) .

On Mon, May 4, 2015 at 12:34 AM, Abdallah Jabbour <abdjbr () gmail com<mailto:abdjbr () gmail com>> wrote:
yes they do !

On Sun, May 3, 2015 at 2:00 PM, <snort-users-request () lists sourceforge net<mailto:snort-users-request () lists 
sourceforge net>> wrote:
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Today's Topics:

   1. Re: snort inline mode in CentOS 6.6 (James Lay)


----------------------------------------------------------------------

Message: 1
Date: Sat, 02 May 2015 07:25:22 -0600
From: James Lay <jlay () slave-tothe-box net<mailto:jlay () slave-tothe-box net>>
Subject: Re: [Snort-users] snort inline mode in CentOS 6.6
To: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>
Message-ID: <1430573122.4447.1.camel@JamesiMac<mailto:1430573122.4447.1.camel@JamesiMac>>
Content-Type: text/plain; charset="utf-8"

On Sat, 2015-05-02 at 12:46 +0200, Abdallah Jabbour wrote:
Hello ,



i have installed snort on CentOS6.6 in a KVM Guest machine , it a
router/ firewall using iptables , i followed the installation and
configuration steps and tested the configuration file validity ( using
-T command line arg )



i enabled inline mode :


in configuration file : i added and uncommented the following lines :

 config policy_mode:inline

 config daq: afpacket
 config daq_dir: /usr/lib64/daq/
 config daq_mode: inline
 config daq_var: buffer_size_mb=128


and also in /etc/sysconfig/snort


INTERFACE=eth0:eth1


and start the snort service


the network connection ( locally and to the internet ) is dropped i
cannot ping any host on the network .


i added some rules to /etc/snort/rules/local.rules

to see if alerting is working , i can see alerts being written
to /var/log/snort/alert after i reboot the machine ( since there is no
network connectivity ) .


i know that inline mode will put the network interfaces eth0 and eth1
in promiscuous mode and will bridge the network connection to get the
network traffic . is there anything i am missing my setup  ?




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To eth0 and eth1 have IP addresses assigned?

James
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End of Snort-users Digest, Vol 108, Issue 2
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One dashboard for servers and applications across Physical-Virtual-Cloud 
Widest out-of-the-box monitoring support with 50+ applications
Performance metrics, stats and reports that give you Actionable Insights
Deep dive visibility with transaction tracing using APM Insight.
http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
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