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Re: Snort with two instances
From: "Castle, Shane" <scastle () bouldercounty org>
Date: Wed, 22 Dec 2010 12:40:15 -0700

Start off with conf files that have the necessary things unique to the
sensor and then include your main snort.conf, e.g.:

snort-eth2.conf:
--------------------------------------------------------
config logdir: /var/snort/spool-eth2
config daemon
config alert_with_interface_name
preprocessor perfmonitor: time 300 file
/var/snort/spool-eth2/snort.stats pktcnt 10000
include /etc/snort/snort.conf
--------------------------------------------------------

-- 
Shane Castle
Data Security Mgr, Boulder County IT
CISSP GSEC GCIH

-----Original Message-----
From: J. L. Cabral [mailto:jelocabral () gmail com] 
Sent: Wednesday, December 22, 2010 12:07
To: snort-users () lists sourceforge net
Subject: [Snort-users] Snort with two instances

Dear all, I have a Snort 2.9 box with two sniffing interfaces:

1) eth1 sniff DMZ traffic --> in snort.conf HOME_NET = 172.18.10.0/24
2) eth2 sniff LAN traffic --> in snort.conf HOME_NET = 10.10.0.0/16

Is it better to have two different snort.conf files, for example:

snort-eth1.conf
snort-eth2.conf

and run two snort instanes like these:

snort -D -u snort -g snort -c /snort/etc/snort-eth1.conf -i eth1
snort -D -u snort -g snort -c /snort/etc/snort-eth2.conf -i eth2

In this case, what happen if I download rules with oinkmaster, will they
apply on both snort-eth1.conf and snort-eth2.conf files ???

Or what is the best way to do I need ???

Really thanks,

JeLo



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