Scott Wunsch wrote:
> Active approach: Walk through the entire subnet firing off ARP requests
> and watching for responses. It's still a lot of work, but it's slightly
> less network traffic than using ping (which would have to do the ARP
> requests anyway, after all).
An approach which, on our current estimates, will take several days for
10.0.0.0/8
> Passive approach: Sit there on the network, and watch all the ARP traffic.
> After watching for a while, you'll have the IP address of any machine that
> ever bothers to talk on the network. Of course, this could take a while
> before you would be very sure of getting all the machines.
Ooooh. That's a nice idea. I like it. Would need to skulk around for at
least 15 minutes for any reasonable results, but I think that's within
the bounds of sanity. Gives us something to do while running an nmap -O
against machines found by Other Means.
Paul.
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