[Snort-users] Grouping connections

Joel Esler jesler at ...1935...
Wed Apr 22 12:17:44 EDT 2009


It doesn't have to be limited.

You can say "Tag:session;"  and that's it.

J

2009/4/22 Ulisses Araújo Costa <ulissesaraujocosta at ...11827...>

> 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
>>>
>>
> 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 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/>
>>
>
>
>
> --
> 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
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