How to get a list of all valid IP addresses in a local network?

networking ip

M.J.Ahmadi · Dec 2, 2012 · Viewed 1.4M times · Source

Is there a way to get a list of all valid IP addresses in a local network?

I mean all IP addresses that each user is using in the network.

Answer

Install nmap,

sudo apt-get install nmap

then

nmap -sP 192.168.1.*

or more commonly

nmap -sn 192.168.1.0/24

will scan the entire .1 to .254 range

This does a simple ping scan in the entire subnet to see which hosts are online.