Re: Grouping connections

[Ulisses Araújo Costa <ulissesaraujocosta () gmail com>]

Hi Leon,

what I want is to record that the request X have the response Y. What I
explained, is that probably the request X is just a packet, but the response
Y is 4 packets. The only thing I want to know is that the flow X <> Y
happened.

2009/4/22 Leon Ward <seclists () rm-rf co uk>

> Hi.
>
> Sorry I don't think I understand what you are asking. Can you share the
> goal you are trying to achieve rather than the method you are trying to
> resolve it by?
>
> > The idea is make Snort just consider that as 2 states (me making the
> request and google sending the response). The problem is I want to make that
> to connections, not sessions.
>
> If you need to differentiate between data in each flow direction, take a
> look at "flow".
>
> -Leon
>
>
>
>
> 2009/4/22 Ulisses Araújo Costa <ulissesaraujocosta () gmail com>
>
> > Joel,
> >
> > that's what I said:
> >
> > "
> > The problem is I want to make that to connections, not sessions.
> >
> > If it was sessions I can use the 'flag' keyword.
> > "
> >
> > But I *don't* want sessions.
> >
> > 2009/4/22 Joel Esler <jesler () sourcefire com>
> >
> > > Take a look at the tag keyword.
> > > http://www.snort.org/docs/snort_htmanuals/htmanual_284/node373.html
> > >
> > > The flags keyword simply will trigger on the presence of certain TCP
> > > flags set in the packet.  This is probably not what you want.
> > >
> > > J
> > >
> > > 2009/4/22 Ulisses Araújo Costa <ulissesaraujocosta () gmail com>
> > >
> > > >  Hello,
> > > >
> > > > I'm using Snort in a project. I'm wondering if with Snort I can group
> > > > packets from the same connection. For example: if I request google.com,
> > > > I just send one packet but the response came in (imagine) 4 packets. The
> > > > idea is make Snort just consider that as 2 states (me making the request and
> > > > google sending the response). The problem is I want to make that to
> > > > connections, not sessions.
> > > >
> > > > If it was sessions I can use the 'flag' keyword. Now I'm seeing if the
> > > > way is using preprocessors, in this case the HTTP preprocessor.
> > > >
> > > > Can you help me?
> > > >
> > > > Best Regards,
> > > >
> > > > --
> > > > Ulisses Costa - http://caos.di.uminho.pt/~ulisses/<http://caos.di.uminho.pt/%7Eulisses/>
> > > >
> > > >
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> > > --
> > > joel esler | Sourcefire | gtalk: jesler () sourcefire com | 302-223-5974 |
> > > http://twitter.com/joelesler
> >
> >
> >
> > --
> > Ulisses Costa - http://caos.di.uminho.pt/~ulisses/<http://caos.di.uminho.pt/%7Eulisses/>
> >
> >
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-- 
Ulisses Costa - http://caos.di.uminho.pt/~ulisses/

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