Re: TCP stack smashing

From: R. DuFresne (dufresne@sysinfo.com)
Date: Wed Mar 14 2007 - 15:55:11 EST


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On Sun, 11 Mar 2007, Nicolas RUFF wrote:

>> I am looking for a tool that can be used to stress the tcp implementation
>> on our web/application server. I remember there used to be a tool called
>> EvilTCP that could be integrated
>> into the bsd/linux kernel to emulate a bad TCP implementation. However I
>> cannot find it on google. Can anybody help with this or do you know of any
>> similar utility that I can use to make malformed TCP transactions
>> (request/response).
>
> Not sure if this is what you are looking for, but the ISIC tools
> collection (and namely TCPSIC) can flood your server with bad TCP fragments.
>

If I recall, having played with those years ago, if used aggessivly, and
merely mildly aggessivly, there was not a TCP stack we could find that did
not get hosed to a state requiring a reboot to recover from. Those are
not tools to be played in production envs fer sure.

Thanks,

Ron DuFresne
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