aquiring the MAC address of a visitor

  • Druid2000
  • Born
  • Born
  • Druid2000
  • Posts: 4

Post 3+ Months Ago

I know this sounds pretty vicious. :twisted: But, how else can you tell if a person is a repeat user over a period of time? Their IP address will change. Their MAC address could change also, but far less frequently.

So, I know if there is a computer on your network you can take the IP address and ping it. And then arp -a and get the physical or MAC address.

So, isn't there some way a program behind a website could do the same? Once you aquire the IP address have a program on the site ping it and retrieve the other information?

Is this possible, or what is it I'm not understanding? :hmm:

Thanks.
  • Don2007
  • Web Master
  • Web Master
  • Don2007
  • Posts: 4924
  • Loc: NY

Post 3+ Months Ago

There are a few things that might work but they might not be worth the hassle. I'm testing them on Unix but there seems to be Windows versions. The first one is arping which works on the LAN but doesn't seem to work remotely.


queyosepa# ./arping 192.168.0.89
ARPING 192.168.0.89
64 bytes from 00:17:3f:2f:38:c2 (192.168.0.89): index=0 time=13.123 msec

That's on my LAN. ^^^^^ A mac address was returned

queyosepa# ./arping 151.198.0.38
ARPING 151.198.0.38
^C
--- 151.198.0.38 statistics ---
19 packets transmitted, 0 packets received, 100% unanswered
queyosepa#


All packets were lost.^^^

There is another program called arpwatch. I couldn't get it to work on my LAN but I only spent about 20 minutes on it.
http://en.wikipedia.org/wiki/Arpwatch

If that only works on the LAN or doesn't suit your needs, another capture program is ettercap.

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