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

[Ron Johnson <ron.l.johnson@cox.net>]

On 11/19/08 07:27, 中和刘 wrote:
> 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.

Hmmm.  Looks like you're right.

> > (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 :)

I was thinking more of government regulation.

--
Ron Johnson, Jr.
Jefferson LA  USA

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