Snort mailing list archives

Inline with DAQ and afpacket only passing broadcasts


From: Avery Rozar <asrozar () yahoo com>
Date: Fri, 4 May 2012 09:21:37 -0700 (PDT)

Hello all,
I have setup snort inline using this method.

downloaded Libdnet, Barnyard2, and DAQ, and installed them.


./configure --enable-64bit-gcc --enable-inline-init-failopen --enable-sourcefire 
--with-daq-includes=/usr/local/include/dnet/ --with-daq-libraries=/usr/local/lib/


make ; make install

copied and setup snort.config, and rules etc... to /etc/snort/


/sbin/ifconfig eth1 0.0.0.0 promisc up
/sbin/ifconfig eth2 0.0.0.0 promisc up

service iptables off (for now)

snort --daq afpacket -i eth1:eth2 -Q -c /etc/snort/snort.conf

I'm using wire-shark on two servers, one behind the IPS, and one in front. I only see broadcast traffic from each host. 
For example, from host a, I will bing host b, and the other way, no reply. If host a pings the broadcast address, host 
b will see this, and the other way. Host b's dns request never makes it to host a (my DNS server). Not sure where to 
look, would this be a daq issue, or snort.conf issue?

Thanks in advance.

 
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