creating SYN bursts

creating SYN bursts

[Bart Trojanowski]

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Hi,

I am doing some syn-flood testing.  I would like to create bursts of
real connections by using 'wget &' from a loop in user space, and have
the connections "queued up".  When everything is ready, I would like to
have all the SYNs sent out at (almost) the same time.

Is it possible to do something like this?  Can I use existing iptables
plugins?  If not, what NF primitives should I employ?

-Bart

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Re: creating SYN bursts

[Philip Craig]

On 11/22/2005 12:54 PM, Bart Trojanowski wrote:
> I am doing some syn-flood testing.  I would like to create bursts of
> real connections by using 'wget &' from a loop in user space, and have
> the connections "queued up".  When everything is ready, I would like to
> have all the SYNs sent out at (almost) the same time.
> 
> Is it possible to do something like this?  Can I use existing iptables
> plugins?  If not, what NF primitives should I employ?

Use the QUEUE target to send the packets to userspace, and then
have a userspace application queue them until you are ready.