Snort mailing list archives

Re: snort-2.9.4, daq 2.0.1 afpacket in inline mode snort fails to drop packets even when RULE is set to drop


From: Y M <snort () outlook com>
Date: Sun, 18 Aug 2013 19:08:03 +0000

If I understand your question correctly, this is where -i eth0:eth1 comes into play. This tells snort that traffic is 
flowing from eth0 to eth1 and back. In my case, its up to the implementer to assign which interface to receive the 
network feed based on home and external net, and the placement of the sensor within the network. For example, assume my 
$HOME_NET is 192.168.10.10 and my $EXTERNAL_NET is any and I want to assign the eth0 to my actual home net feed and 
eth1 to my feed leaving the network. In this case, using an ICMP rule I would be able to drop any ping request from my 
home net going out. 
Did I address your question? I am not sure what do you mean by OP's, lack of acronyms knowledge :)
Date: Fri, 16 Aug 2013 20:21:42 -0400
From: wkitty42 () windstream net
To: snort-users () lists sourceforge net
Subject: Re: [Snort-users] snort-2.9.4, daq 2.0.1 afpacket in inline mode snort fails to drop packets even when RULE 
is set to drop

On 8/16/2013 14:53, Y M wrote:
If I recall, --enable-inline is deprecated since a while now, not sure which
Snort version; A warning should have been shown during compilation. But I do not
think that this would affect operating in inline mode now.

doesn't inline mode require an input interface and an output interface where 
snort sits between then and passes the traffic from one to the other? what does 
the OP's snort.conf show in this regard?

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