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Brandon Enright wrote:
> I actually tested this quite a bit but never got a chance to post my
> results. I scanned ~50k hosts on campus on all 64k ports. I also
> scanned all our IPs on a about a dozen ports. I also randomly scanned
> 200M Internet hosts on a handful of ports before Time Warner threatened
> to turn me off.
>
Wow, thanks for doing so much testing!
> The results:
>
> * Nmap never crash
> * The only errors I triggered were packets with unknown/bad IP options
> * I couldn't get any really bad packets back
>
> It seems that most routers won't forward really screwed up IP packets
> and since the local router constructs the data-link header most
> problems can only show up on the local segment.
>
> I figure someone could setup a local host that deliberately screws up
> outgoing frames but overall, I think the patch looks good enough we
> don't need to do that kind of testing.
>
All of this is good news, especially knowing that these checks are probably
just extra precautions. I was also unable to get bad packets back from the
big scans I ran, but I didn't want to rule anything out because I wasn't able
to do anywhere near the amount of testing you could.
> Brandon
>
Thanks again,
Kris Katterjohn
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Received on Jun 30 2008
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