Date: Tue, 30 Jan 2001 13:09:03 +0200 From: Peter Pentchev <roam@orbitel.bg> To: disassembled <modulus@icmp.dhs.org> Cc: freebsd-security@FreeBSD.ORG Subject: Re: mapping arp Message-ID: <20010130130903.E328@ringworld.oblivion.bg> In-Reply-To: <Pine.BSF.4.21.0101292110150.24874-100000@icmp.dhs.org>; from modulus@icmp.dhs.org on Mon, Jan 29, 2001 at 09:14:27PM -0600 References: <Pine.BSF.4.21.0101292110150.24874-100000@icmp.dhs.org>
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On Mon, Jan 29, 2001 at 09:14:27PM -0600, disassembled wrote: > > I was wondering if there was anyway i could map an mac address back > to it's assigned IP address without using a rarpd. > > something i was considering writing was using writing a program > that sent out a series of arp who-has packets to the network > then run a cmp on the 48-bit values that returned in the > replies against some mac address that would be supplied on the > command line. > > if anyone knows anything about that & could help me out; > i would be greatful. <ANSWER TYPE="obvious,stupid" PRIORITY="next to useless"> If your system has already seen IP traffic from the machine in question, you should have its address in the kernel's ARP cache. arp -an should display it, or you could query it the way arp(1) does. </ANSWER> G'luck, Peter -- I am the thought you are now thinking. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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