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
> 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.
Maintained by the ILUG website team. The aim of Linux.ie is to
support and help commercial and private users of Linux in Ireland. You can
display ILUG news in your own webpages, read backend
information to find out how. Networking services kindly provided by HEAnet, server kindly donated by
Dell. Linux is a trademark of Linus Torvalds,
used with permission. No penguins were harmed in the production or maintenance
of this highly praised website. Looking for the
Indian Linux Users' Group? Try here. If you've read all this and aren't a lawyer: you should be!