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Date:      Tue, 2 Feb 1999 16:09:38 -0500 (EST)
From:      Chris <chris@exit109.com>
To:        Bill Woodford <woodford@cc181716-a.hwrd1.md.home.com>
Cc:        ML FreeBSD Security <security@FreeBSD.ORG>
Subject:   Re: tcpdump
Message-ID:  <Pine.GSO.3.96.990202160402.15819E-100000@firestorm.exit109.com>
In-Reply-To: <19990202153458.A1152@cc181716-a.hwrd1.md.home.com>

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Bill-

You need to enable the Berkley Packet Filter in your kernel config, add
the line:

pseudo-device   bpfilter        2 

that will allow you 2 process' useing the bpf device.  recompile your
kernel, reboot, your good to go :)

--------------------------------
Chris O'Hara
Network/Systems Administration
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Atlantic Internet Technologies
628 Shrewsbury Ave.
Red Bank, NJ 07701

Web Hosting/Design, Dialup, Co-Location
http://www.exit109.com

On Tue, 2 Feb 1999, Bill Woodford wrote:

> Forgive my ignorance, but I built tcpdump (3.4a3) and libcap (0.4a1) and
> it built beautifully.  I read the docs, and that mentioned a few things to
> watch out for.  However, when I run tcpdump (as root), it gives me:
> 
> tcpdump: /dev/bpf0: Device not configured
> 
> I did a little reading, and realize it's possible that my NIC may not
> support it (it's a 3com 3c509 combo), but how would one tell.  Can anyone
> enlighten me as to the true nature of this error?  Im running natd/ipfw,
> would that interfere with the functioning of tcpdump?  Any help would be
> appreciated.  Thanks.
> 
> -- 
> Bill Woodford * woodford@cc181716-a.hwrd1.md.home.com * ICQ:14076169 
>      "Windows Multitasking: Messing up several things at once."
> 
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