[wplug] IP addresses

[harrold at sage.che.pitt.edu]

assuming that every computer is on you could try to ping all the ip's on
your subnet. if someone has a laptop, or something which is not on all the
time, and there is no central place where people have used ip's listed
then there is no way to know that ip is in use until they get on the
network. if you work on the assumption that over a certain time interval,
say a day, every computer should be on the network then you could use
something like tcpdump or someother product that monitors the network. you
could grep the output for your subnet and see what ip's are being used
that way. 

-- 
john

"You have new mail, you open it. Your server begins port 
scanning every box on the internet.  Do the server's mind? 
Of course not, they have nothing better to do." 
- New Microsoft Ad?

Sometime in September Douglas Green assaulted keyboard and produced...

|Hi-
|Is there a way to determine what IP numbers on my network are used, and which 
|ones are available? There are a large number of us on the same subnetwork, 
|and over the years IP numbers have been lost/swapped/replaced, etc. I don't 
|need to know who has what IP- only which ones are free. Any help is 
|appreciated!
|Thanks
|
|Doug
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