Re: Rules with "Established" option, not working

[sami Sayko <saykosami () yahoo com>]

Yes I tried it before (-k none), without success.

Any others suggestions please.

Thanks




Le lundi 10 février 2014 10h38, Joel Esler (jesler) <jesler () cisco com> a écrit :
 
Did you try this? 

https://github.com/vrtadmin/snort-faq/blob/master/FAQ/Im-not-receiving-alerts-in-Snort.md

--
Joel Esler
Threat Intelligence Team Lead
Open Source Manager
Vulnerability Research Team

 
On Feb 10, 2014, at 10:06 AM, sami Sayko <saykosami () yahoo com> wrote:

Thank you for the quick answer.
>  
> I checked a pcap capture and, yes I can see the source and the destination and (the 3 way handshake).
> And to give more precision :
> If leave the rules with the flow:to_server, established, the rules will not be triggered.
> I if remove the established key (so the rule contains flow:to_server), it works fine.
>  
> Thanks 
>
>
>
> Le lundi 10 février 2014 9h13, Joel Esler (jesler) <jesler () cisco com> a écrit :
>
> I assume then that Snort is not seeing both sides of the conversation because of the load balancer? 
>
>
> Can you confirm this by looking at a pcap?
>
>
>
>
> On Feb 10, 2014, at 8:59 AM, sami Sayko <saykosami () yahoo com> wrote:
>
> Hi,
> > I'm using snort 2.9.5 (Windows), and official ET and snort rules.
> > I noticed a strange thing with the official rules :
> > The rules with established option never triggered, but if I remove the "established" option, all things we'll be ok 
> > !!!!
> >
> >
> > I'm using a normal configuration (default). Except that my web server is behind a load balancer.
> >
> >
> > Can someone help me to find a solution ?
> >
> >
> > Thanks  
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