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Nmap Development: Re: Fragmentation scan

Re: Fragmentation scan

From: Alan Jenkins <aj504_at_york.ac.uk>
Date: Sun, 17 Oct 2004 20:32:33 +0100

>On Wed, Oct 06, 2004 at 09:05:28PM +0100, Alan Jenkins wrote:
>> Does the -f option do anything?
>Do you have ip_conntrack modules loaded?
>
>Martin Mačok
> IT Security Consultant

Yes, good point. I haven't tried without it yet.

Explanatory note: In order for ip_conntrack to work, packets must be
defragmented so that all the necessary information is available e.g.
destination port, which could not be obtained individual fragments except the
first.

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