nmap

Ping Scan of a subnet

$ nmap -sP 192.168.1.0/24

Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2011-01-04 14:55 EST
Host 192.168.1.2 appears to be up.
Host 192.168.8.3 appears to be up.
Host 192.168.8.4 appears to be up.
Host 192.168.8.10 appears to be up.
Host 192.168.8.11 appears to be up.
Nmap finished: 256 IP addresses (5 hosts up) scanned in 3.938 seconds
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License