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Date:      Mon, 8 Jul 2002 16:25:51 +0200
From:      <mcrosland@chello.nl>
To:        freebsd-security@freebsd.org
Subject:   [Fwd: Fwd: Re: hiding OS name]
Message-ID:  <20020708142551.MOXD28368.amsfep12-int.chello.nl@[127.0.0.1]>

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> 
> Van: Mike Crosland <mcrosland@hbh-it.nl>
> Datum: 2002/07/08 ma PM 04:21:38 GMT+02:00
> Aan: mcrosland@chello.nl
> Onderwerp: Fwd: Re: hiding OS name
> 
> 
> 
> ----------  Forwarded Message  ----------
> 
> Subject: Fwd: Re: hiding OS name
> Date: Mon, 8 Jul 2002 16:13:04 +0200
> From: Mike Crosland <mcrosland@hbh-it.nl>
> To: freebsd-security@freebsd.org
> 
> ----------  Forwarded Message  ----------
> 
> Subject: Fwd: Re: hiding OS name
> Date: Mon, 8 Jul 2002 12:09:53 +0200
> From: Mike Crosland <mcrosland@hbh-it.nl>
> To: security@freebsd.org
> 
> ----------  Forwarded Message  ----------
> 
> Subject: Re: hiding OS name
> Date: Mon, 8 Jul 2002 11:18:17 +0200
> From: Mike Crosland <mcrosland@hbh-it.nl>
> To: Nathan Kinkade <nkinkade@dsl-only.com>
> 
> On Monday 08 July 2002 06:29, Nathan Kinkade wrote:
> > On Mon, 8 Jul 2002 09:32:09 +0700
> >
> > "Asep Ruspeni" <ruspeni@mti.itb.ac.id> wrote:
> > > I am newbie in FreeBSD OS, but i have lot of concerned in securing
> > > system.
> > >
> > > I have questions like this :
> > >
> > > - how can i set-up FreeBSD, so when it being scanned, it's show no
> > > operating system name + version.
> > > - is there any articles i colud read about securing freeBSD such as
> > > the question i ask above.
> > >
> > > thank you in advance.
> 
> You could try re-compiling the kernel to drop packets with SYN+FIN, which
> prevents fingertprinting the staqck, but LINT carries a warning about this
> not being good for web servers. If you're not running a webserver though, the
> option is
> 
> options         TCP_DROP_SYNFIN
> 
> 
> Michael Crosland
> 
> Systeem Beheerder
> 
> ---------------------------------------
> HBH Automatisering BV        	+
> Koningslaan 30				+
> 1075 AD Amsterdam			+
> ---------------------------------------
> 
> -------------------------------------------------------
> 
> --
> Met vriendelijk groeten,
> 
> 
> Michael Crosland
> 
> Systeem Beheerder
> 
> ---------------------------------------
> HBH Automatisering BV        	+
> Koningslaan 30				+
> 1075 AD Amsterdam			+
> Tel: 020-6624145  Ext: 808		+
> Fax: 020-6764478
> Mobiel 0647 166305			+
> ---------------------------------------
> 
> -------------------------------------------------------
> 
> --
> Met vriendelijk groeten,
> 
> 
> Michael Crosland
> 
> Systeem Beheerder
> 
> ---------------------------------------
> HBH Automatisering BV        	+
> Koningslaan 30				+
> 1075 AD Amsterdam			+
> Tel: 020-6624145  Ext: 808		+
> Fax: 020-6764478
> Mobiel 0647 166305			+
> ---------------------------------------
> 
> -------------------------------------------------------
> 
> -- 
> Met vriendelijk groeten,
> 
> 
> Michael Crosland
> 
> Systeem Beheerder
> 
> ---------------------------------------		
> HBH Automatisering BV        	+
> Koningslaan 30				+
> 1075 AD Amsterdam			+	
> Tel: 020-6624145  Ext: 808		+
> Fax: 020-6764478
> Mobiel 0647 166305			+
> ---------------------------------------
>



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