Date: Tue, 02 Feb 1999 16:02:23 -0500 From: "Stephen F. Combs" <steve.combs@indsys.ge.com> To: Bill Woodford <woodford@cc181716-a.hwrd1.md.home.com> Cc: ML FreeBSD Security <security@FreeBSD.ORG> Subject: Re: tcpdump Message-ID: <36B767DF.1848F5E4@indsys.ge.com> References: <19990202153458.A1152@cc181716-a.hwrd1.md.home.com>
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You need to build a kernel with bpfilter enabled. I've run tcpdump on a 3c509 board many times (it's NOT a true network sniffer, but, it does allow you to look at packets intercepted by your '509 board!). Steve Combs Security Analyst GE Industrial Systems 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." > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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