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Re: Re: MAC Address and NIC Device on Network.

by fs (Monk)
on Jun 27, 2001 at 17:37 UTC ( #91907=note: print w/ replies, xml ) Need Help??


in reply to Re: MAC Address and NIC Device on Network.
in thread MAC Address and NIC Device on Network.

That's something to be careful with - anyone who pulled a stunt like that on my network would get the plug pulled on their connection in a heartbeat, and not just because it happens to be the first step of several DoS attacks. It's also not the most reliable method:

  • A machine's arp cache is only of finite size, so you can only capture so many addresses
  • Since every machine will be answering all at once, there's a very good chance that some of the replies will just get dropped
  • Any machines that are behind a router, will simply appear with the routers mac address if the router even passes the packet at all.
The approach of running a prog on each station that reports back the mac to a central server is probably the most reliable and network-friendly way to go.


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