Date: Wed, 21 Jan 1998 22:08:19 -0600 From: Steve Price <sprice@HiWAAY.net> To: Greg Ryan <greg@safetyweb.com.au> Cc: freebsd-isp@FreeBSD.ORG Subject: Re: tcpdump configuration Message-ID: <34C6C633.28D95ABC@hiwaay.net> References: <3.0.5.32.19980122145556.03a1d390@bach>
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Greg Ryan wrote: > > Hi All, > > I'm trying to watch the traffic on our network to track down a problem, and > am having trobule configuring tcpdump on either of our freebsd machines. > > I get the error '/dev/bpf0: Device not configured' > > The man pages say that root must have read access to the device but: > > crw------- 1 root wheel 23, 0 Oct 18 22:19 bpf0 > > Have also tried setting exec permission, but no effect. Is there something > i may have missed, or a flag somewhere that (dis)allows promiscuous mode? > steve[/usr/src/sys/i386/conf]$ grep "packet filter" LINT pseudo-device bpfilter 4 #Berkeley packet filter steve[/usr/src/sys/i386/conf]$ You should add this line to your kernel config file and from /usr/src/sys/i386/conf do the following: config your_kernel_config_filename cd ../../compile/your_kernel_config_filename make clean depend all install Steve > Thanks in advance, > Greg > > -- > SafetyWeb Internet Solutions Pty Ltd > Suite 1101, Capital Tower > Canberra City ACT 2601 > Australia > > +61 02 6257 9901 Telephone > +61 02 6257 9904 Technical Support > +61 02 6257 9902 Fax > > greg@safetyweb.com.au > http://www.safetyweb.com.au
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