Re: how to get the mac address(network card physical address) of a remote computer by its IP address?

To: debian-user@lists.debian.org
Subject: Re: how to get the mac address(network card physical address) of a remote computer by its IP address?
From: Ron Johnson <ron.l.johnson@cox.net>
Date: Wed, 19 Nov 2008 07:20:06 -0600
Message-id: <[🔎] 49241286.8060101@cox.net>
In-reply-to: <[🔎] 407c36770811190506y376659b0j64da007f83f405da@mail.gmail.com>
References: <[🔎] 407c36770811190506y376659b0j64da007f83f405da@mail.gmail.com>

On 11/19/08 07:06, 中和刘 wrote:

when a user visit my website, it's easy to get the ip address of the
user, but i think IP address is not as stable as mac address, so I
hope I can get the mac address of the user according to its IP
address, is it possible? thanks

IP packets don't contain the MAC address. You'd have to run someasynchronous arp ping against the IP address.

(Why do I get the feeling that some Chinese Government rule isbehind this request?)


--
Ron Johnson, Jr.
Jefferson LA  USA

If you don't agree with me, you are worse than Hitler!!!

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