[Snort-users] Grouping connections

Joel Esler jesler at ...1935...
Fri Apr 24 13:03:48 EDT 2009


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/
>



-- 
joel esler | Sourcefire | gtalk: jesler at ...1935... | 302-223-5974 |
http://twitter.com/joelesler
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