Re: Newbie question: reject rule for IPv6

[K b <urbestfriend () gmail com>]

Just to add some more info.

I tried ipq too without any success. But If I run my web server on an
IPv4 address and run snort in ip4 mode, I see that request gets
blocked.
I am wondering whether I have missed some step for Ipv6 or do I need
to change the rule for IPv6?




On Sun, Dec 11, 2011 at 4:09 PM, K b <urbestfriend () gmail com> wrote:
> JJ,
>
> I am using following command to start snort.
>
> snort -c  /etc/snort.conf -N -D
>
> Also I have set following parameters in snort.conf.
>
> config daq: nfq
> config daq_mode: inline
> config daq_var: proto=ip6
> config daq_dir:<dir>
>
> Note that I have built both daq and snort with --ipv6-enabled option.
>
> My ip6table:
>
> -A INPUT -d <ip_address>/128 -p tcp -m tcp --dport 80 -j NFQUEUE --queue-num 0
>
> The setup  works fine as I am seeing alerts getting logged when I send
> a http request with URI contains "snort-test", but unfortunately the
> request is not getting rejected ( No ICMP6 unreachable ) as it
> should've been and request is going through.
>
> In fact I tried 'drop' too , without any success. Can someone point
> out the code where ICMP unreachable is sent ? I tried to debug daq and
> always verdict to NFQUEUE is set as NF_ACCEPT.
>
> Thanks for the response.
>
> Regards,
> Kumar
>
>
> On Sat, Dec 10, 2011 at 9:16 PM, JJ Cummings <cummingsj () gmail com> wrote:
> > What does your iptables look like and what is your snort startup command line? Also, use drop, not reject.
> >
> > Sent from the iRoad
> >
> > On Dec 9, 2011, at 5:48, K b <urbestfriend () gmail com> wrote:
> >
> > > Hello,
> > >
> > > A newbie here and I was trying to setup snort inline with NFQ for IPv6
> > > services.  Just for testing I have added the following reject rule.
> > >
> > > reject tcp any any -> any 80 (classtype:attempted-user;
> > > msg:"Snort_test"; content:"snort-test"; sid:9000001; rev:1;)
> > >
> > > Now If I send a traffic with the above content, I see that alerts are
> > > getting generated but this requests is not being reset as expected.
> > >
> > > I am running snort 2.9.1.2, my snort.conf is unchanged. What am I doing wrong?
> > >
> > > Have a good day.
> > >
> > > Thanks and regards,
> > > Kumar
> > >
> > > ------------------------------------------------------------------------------
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------------------------------------------------------------------------------
Learn Windows Azure Live!  Tuesday, Dec 13, 2011
Microsoft is holding a special Learn Windows Azure training event for 
developers. It will provide a great way to learn Windows Azure and what it 
provides. You can attend the event by watching it streamed LIVE online.  
Learn more at http://p.sf.net/sfu/ms-windowsazure
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