Re: Question for the Guru's

[carlopmart <carlopmart () gmail com>]

On 11/14/2011 07:01 PM, NA wrote:
> On 11/14/11 9:21 AM, carlopmart wrote:
> > On 11/14/2011 05:55 PM, John Liss wrote:
> > > Hey Gang,
> > >
> > > We have been a snort users for a long while now, and we have always used
> > > it as a IDS, in alert mode only, with a mirrored port.
> > > Our typical setup is like:
> > > http://www.snort.org/assets/158/013-snortinstallguide2912.pdf
> > > Internet ->   firewall - lan
> > > |
> > >                            snort eth 1
> > >
> > > Recently our team has started to research a more proactive approach to
> > > using snort where we can drop packets on offending rules.
> > >
> > > So the question to the group would be:
> > >
> > > Requirements:  Snort to be inline, bridged, and have the ability to drop
> > > bad traffic.
> > > Internet ->   snort eth1 ->   snort eth2 ->   firewall ->   lan
> > >
> > > What is the best way to approach dropping packets for offending rules.
> > >
> > > Just plain Snort?  (Does 2.9.1.2 support inline with the ability to drop?)
> > > Snort with Samsnort?
> > > Snort inline (though doesn't look like it is maintained much anymore)
> > >
> > > We are wanting to do inline mode with a subscription to rules but before
> > > we purchase the rules, we need a proof of concept first.
> > >
> > > We would like to use the latest snort-2.9.1.x branch if we can.
> > >
> > > Thanks in advance!
> > >
> > > -John
> > See daq docs about af-packet and nfq ...
> If I may jump in here to forward the conversation, does anyone have an
> opinion of which is better in-line, af-packet or nfq?
> I am currently running Snort inline using af-packet (using Gentoo) and
> NFQ was not originally available in the 2.9.x.x version.
> -Bill

Inline is a dead line ... To work with snort as an IPS you need to use 
af-packet or nfq. Better?? Depends on your needs, your network topology 
and your experience with snort.


-- 
CL Martinez
carlopmart {at} gmail {d0t} com

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