Re: [Snort-users] Stream5 question

This is a discussion on Re: [Snort-users] Stream5 question within the Snort forums, part of the System Security and Security Related category; Hi all, I should also mention that I tested this issue with the newest version of Snort. However, I had ...


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Old 04-08-2008
tung tran
 
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Default Re: [Snort-users] Stream5 question

Hi all,
I should also mention that I tested this issue with the newest version
of Snort. However, I had to send the packet (with invalid sequence and
ack numbers) repeatedly 3 times (to Snort) before Snort passed one of
the packets down to the detection engine ( I wrote a rule to check
this)
Thanks,

On Tue, Apr 8, 2008 at 2:12 AM, tung tran <tunghack@gmail.com> wrote:
> Hi all,
> My question is: "is is true that even though Stream5 preprocessor is
> on (with necessary directives set), Snort always passes a packet down
> to the detection engine even though the packet has invalid sequence
> number/ acknowledge number which is not expected by the receiver and
> the packet is normally discarded by the receiver ?". Is there a way to
> tell Snort not to passes packets with invalid sequence/acknowledge
> numbers down to the detection engine? I tested this with the newest
> version of Snort.
> Thanks,
> Tung.
>


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