[Snort-users] Grouping connections

Ulisses Araújo Costa ulissesaraujocosta at ...11827...
Mon Apr 27 10:08:22 EDT 2009


One session have many connection. And one connection have many packets... I
think the problem is that  don't explain what connection means to me...

2009/4/24 Ulisses Araújo Costa <ulissesaraujocosta at ...11827...>

> I want identify connection not sessions. I want more detail: connections...
>
> 2009/4/24 Joel Esler <jesler at ...1935...>
>
> A session is made up of connections.  Now I am throughly confused about
>> what you are asking for.
>> J
>>
>> 2009/4/24 Ulisses Araújo Costa <ulissesaraujocosta at ...11827...>
>>
>> Joel Esler, with 'tag:session' I just can identify the session. I want be
>>> able to identify connections.
>>>
>>> 2009/4/23 Joel Esler <jesler at ...1935...>
>>>
>>> The fact that the alert took place tells you that flow X <> Y happened.
>>>>
>>>> J
>>>>
>>>> 2009/4/22 Ulisses Araújo Costa <ulissesaraujocosta at ...11827...>
>>>>
>>>>> 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 at ...14165...>
>>>>>
>>>>> 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 at ...11827...>
>>>>>>
>>>>>>> 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 at ...1935...>
>>>>>>>
>>>>>>>> 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 at ...11827...>
>>>>>>>>
>>>>>>>>>  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 at ...1935... |
>>>>>>>> 302-223-5974 | http://twitter.com/joelesler
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Ulisses Costa - http://caos.di.uminho.pt/~ulisses/<http://caos.di.uminho.pt/%7Eulisses/>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------------------------
>>>>>>> Stay on top of everything new and different, both inside and
>>>>>>> around Java (TM) technology - register by April 22, and save
>>>>>>> $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco.
>>>>>>> 300 plus technical and hands-on sessions. Register today.
>>>>>>> Use priority code J9JMT32. http://p.sf.net/sfu/p
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>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Ulisses Costa - http://caos.di.uminho.pt/~ulisses/<http://caos.di.uminho.pt/%7Eulisses/>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> joel esler | Sourcefire | gtalk: jesler at ...1935... | 302-223-5974 |
>>>> http://twitter.com/joelesler
>>>>
>>>
>>>
>>>
>>> --
>>> Ulisses Costa - http://caos.di.uminho.pt/~ulisses/<http://caos.di.uminho.pt/%7Eulisses/>
>>>
>>
>>
>>
>> --
>> joel esler | Sourcefire | gtalk: jesler at ...1935... | 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/
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