Using freebsd to analyse ip usage?

Simon Gray simong at
Thu Nov 20 00:59:41 PST 2003

> Hello Everyone,
> At work there are some unused ip addresses but we dont know which ones
> they are (because there are alot of computers) is there a port which could
> be used to ping the subnet over a few days to work out which ip addresses
> are actually coming online? Thanks

You could use nmap

cd /usr/ports/security/nmap && make install

and then do something like

nmap -sP

(that should tell you what ip's are up)

Hope this helps,


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