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Date:      Mon, 22 Oct 2001 16:01:36 +0200
From:      Yonatan Bokovza <Yonatan@xpert.com>
To:        'Tomek' <tomek@mpionline.com>, freebsd-questions@FreeBSD.ORG
Subject:   RE: promiscious mode needed? (tcpdump)
Message-ID:  <EB513E68D3F5D41191CA000255588101B434F5@mailserv.xpert.com>

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> -----Original Message-----
> From: Tomek [mailto:tomek@mpionline.com]
> Sent: Monday, October 22, 2001 15:59
> To: freebsd-questions@FreeBSD.ORG
> Subject: promiscious mode needed? (tcpdump)
> 
> 
> Hello there,
> I was wondering if promiscious mode (enabled by default in tcpdump) is
> actually needed or in ANY way helpful when jsut trying to monitor
> traffic to/from the local machine?
tcpdump sets the interface in promiscous mode to show you
all the packets your interface sees. Light RTFMing would point you at
the -p option.

> Also, I have noticed I am picking up a tiny bit of traffic that is
> supposed to go to other DSL customers in my neighbourhood, is that
> normal with promiscious mode?
On daft ISPs, yes.

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