[Snort-users] Grouping connections

Ulisses Araújo Costa ulissesaraujocosta at ...11827...
Fri Apr 24 13:01:51 EDT 2009


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/
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