RE: ERROR: OpenPcap() device em0 open

["Matthew K. Lee" <mattl () rycan com>]

Prabu,

Thanks for your assistance.

Matthew Lee

-----Original Message-----
From: prabu [mailto:prabu333 () hotpop com] 
Sent: Thursday, September 09, 2004 11:06 PM
To: Matthew K. Lee; snort-users () lists sourceforge net
Subject: Re: [Snort-users] ERROR: OpenPcap() device em0 open

Hello Matthew,


> router# /usr/local/bin/snort -c /usr/local/etc/snort.conf -i em0
> Running in IDS mode
> Log directory = /var/log/snort
>
> Initializing Network Interface em0
> ERROR: OpenPcap() device em0 open:
>       (no devices found) /dev/bpf0: Device not configured
> Fatal Error, Quitting..

It seems that ur kernel jave not build with bpf support.So better enable
it 
by following these steps;
The Berkeley Packet Filter (bpf) driver needs to be enabled before
running 
programs that utilize it. Add this to your kernel config file and build
a 
new kernel:

    pseudo-device bpfilter # Berkeley Packet Filter

Secondly, after rebooting you will have to create the device node. This
can 
be accomplished by a change to the /dev directory, followed by the
execution 
of:

    # sh MAKEDEV bpf0


> Is the problem related to GigE and libpcap, or have I done something
> else wrong during the compile?  What can be done to fix the issue?

Not relavant to libpcap.It is because,ur kernel doesnot support bpf.


Cheers,
Prabu.S








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