Re: Grouping connections

[Joel Esler <jesler () sourcefire com>]

Are you looking for the "flush_on_alert" keyword in Stream5?

Joel

2009/4/22 Ulisses Araújo Costa <ulissesaraujocosta () gmail com>

> I saw in the forum a person asking (in 2007) something that is the same I
> want:
>
> "so that i would be able to capture mails containing viagra. I am using
> preprocessor stream4 reassmebly so that i could get the entire mail instead
> of only the packet containing that string 'viagra'. "
>
> I don't need the total packet, but just to identify that as one big-packet,
> not only the packet containing the string 'viagra', but all the e-mail (the
> big-packet).
>
>
> 2009/4/22 Ulisses Araújo Costa <ulissesaraujocosta () gmail com>
>
> > 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
> > Ah! 'tag' keyword. I'm sorry, seems I read that too fast.
> > Unfortunately this seems to be limited relative to the size of something:
> >
> > tag: <type>, <count>, <metric>, [direction];
> >
> > count
> >       • <integer> - Count is specified as a number of units. Units are
> > specified in the <metric> field.
> >
> > :S
> >
> > I want something completely dynamic.
> >
> >
> >
> > > > 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/>
> >
> >
> >
> > --
> > Ulisses Costa - http://caos.di.uminho.pt/~ulisses/<http://caos.di.uminho.pt/%7Eulisses/>
>
>
>
> --
> Ulisses Costa - http://caos.di.uminho.pt/~ulisses/<http://caos.di.uminho.pt/%7Eulisses/>



-- 
joel esler | Sourcefire | gtalk: jesler () sourcefire com | 302-223-5974 |
http://twitter.com/joelesler

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