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

On Wed, Nov 19, 2008 at 9:20 PM, Ron Johnson <ron.l.johnson@cox.net> wrote:
> 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 some
> asynchronous arp ping against the IP address.
i heard that arp ping only get the mac address on the LAN, it cannot
get mac address outside the LAN.
> (Why do I get the feeling that some Chinese Government rule is behind this
> request?)
no, I'm not a member of chinese government, I just want to provide
better service in my website :)

> --
> Ron Johnson, Jr.
> Jefferson LA  USA
> If you don't agree with me, you are worse than Hitler!!!
> --
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Welcome to visit my home page http://www.starliu.com
[It's only accessable when my pc is turned on, on which it's hosted.]

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