On Wed, 19 Nov 2008 21:06:13 +0800
"中和刘" <[EMAIL PROTECTED]> 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
> 



It's not possible. You can only get mac addresses using arp on the local lan.
You can't even be sure that you got a correct ip address if your users are
going through a proxy or nat.


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