Snort mailing list archives

Re: snort inline mode in CentOS 6.6


From: James Lay <jlay () slave-tothe-box net>
Date: Sat, 02 May 2015 07:25:22 -0600

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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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.
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