Re: Snort Inline mode with iptables problems on Ubuntu 12.04

[James Lay <jlay () slave-tothe-box net>]

On 2014-03-19 14:15, Shivaramakrishnan Vaidyanathan wrote:
> But when i try to run with daq as nfq,I get daq module nfq not found.
> Though I see them built,when i use ./configure in daq.
>
>  On Wed, Mar 19, 2014 at 4:08 PM, James Lay <jlay () slave-tothe-box net
> [6]> wrote:
>
> > On 2014-03-19 13:17, Shiva wrote:
> > > Hi,
> > > I have installed the latest version of snort in inline mode and I
> > > have been having problems in accessing the machine once I change
> > the
> > > iptables entries.I am able to start the snort with no issues.But
> > as
> > > soon as I change the iptables, I am no longer able to access
> > it.Here
> > > is the iptables commands that I use.
> > >
> > > iptables -A INPUT -i lo -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT
> > > iptables -A OUTPUT -o lo -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT
> > > iptables -A INPUT -j QUEUE
> > > iptables -A FORWARD -j QUEUE
> > > iptables -A OUTPUT -j QUEUE
> > >
> > > snort -Q --daq afpacket --daq-mode inline -i eth0:eth1 - u snort
> > -g
> > > snort -c /etc/snort/snort.conf
> > >
> > > (I believe I don't have to install extra modules for ip_queue on
> > > ubuntu 12.04).Please let me know what I am doing wrong here?Any
> > > suggestions is greatly appreciated.
> > >
> > > --
> > > Shiva

I see...you're going to want to install the libnetfilter-queue-dev 
package.  I also had to recompile daq and snort, and I even recompiled 
libnet.

James


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