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Date:      Wed, 20 Sep 2000 15:23:44 +0200
From:      Marc Silver <marcs@draenor.org>
To:        Daan Franke <daan@websilon.nl>
Cc:        "'questions@freebsd.org'" <questions@freebsd.org>
Subject:   Re: TCP/IP fingerprint masqing
Message-ID:  <20000920152344.L94643@draenor.org>
In-Reply-To: <3182D9D293F2D211B15A00500416D4902E1596@baco.websilon.nl>; from daan@websilon.nl on Wed, Sep 20, 2000 at 02:54:34PM %2B0200
References:  <3182D9D293F2D211B15A00500416D4902E1596@baco.websilon.nl>

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Hi there,

Taken from LINT:

# TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN.
# This prevents nmap et al. from identifying the TCP/IP stack, but
# breaks support for RFC1644 extensions and is not recommended for web
# servers.

Cheers,
Marc

On Wed, Sep 20, 2000 at 02:54:34PM +0200, Daan Franke wrote:
> Hi,
> 
> I am wondering, is it possible to change the tcp/ip fingerprint of a fbsd
> box, with tools or some cool kernel option.
> 
> This would help me out.
> 
> Thanks.
> 
> Daan Franke
> System Engineer


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