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From: Francisco Pereira <fpereira@lojan.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] clone MAC address
Date: Wed, 17 Nov 2004 02:57:13 +0000	[thread overview]
Message-ID: <419ABE09.4040000@lojan.com> (raw)
In-Reply-To: <7539d99f04111518002045dad8@mail.gmail.com>

Frank Gruellich wrote:
> * Nicolas Patik <nicolas.patik@gmail.com> 16. Nov 04:
> 
>>No, I'm not talking about natting ... I'm talking about hidding my
>>computers from my ISP.
> 
> Tell me, what's the difference.  Can you give some technical description
> for this 'hiding' you are talking about?
> 
>>.. or .... are you telling me that the problem with my linux box is
>>about bad firewall rules?
> 
> No.  'Firewall rules' are a matter of layer 3, MACs and their so called
> cloning belong to layer 2.
> 
>>Right now with my linux box doing NAT they can find that I have others
>>computers connected.
> 
> Contradicting to Chris they can.  But trust me, they won't.  Finding
> hosts behind a NAT router is very difficult and involves the collection
> of huge amounts of traffic.[1]  After all, it will not work for any OSs.

It's no so dificult, at least in some cases.
p0f (passive OS fingerprint) uses a technique (that has some 
limitations) to detect masqueraded hosts, it have to sniff all the 
traffic but not collect it.
http://lcamtuf.coredump.cx/p0f.shtml

Regards,
Francisco.
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  parent reply	other threads:[~2004-11-17  2:57 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-16  2:00 [LARTC] clone MAC address Nicolas Patik
2004-11-16 18:15 ` Stef Coene
2004-11-16 19:29 ` Nicolas Patik
2004-11-16 19:46 ` Chris Bennett
2004-11-16 23:00 ` Frank Gruellich
2004-11-17  2:03 ` Nicolas Patik
2004-11-17  2:57 ` Francisco Pereira [this message]
2004-11-17 16:22 ` Nicolas Patik
2004-11-17 22:05 ` Chris Bennett
2004-11-18 19:36 ` Stef Coene
2004-12-18 20:53 ` sandr8

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