I want to scan for powered on computers on my LAN and gather logs about that. I tried
nmap but it didn't work very well (a lot of switched on computers are not getting detected).
nmap -sP 192.168.2.0/24 Nmap done: 256 IP addresses (10 hosts up) scanned in 6.07 seconds
I also thought about looking at network TCP packets for IPs, but I don't know of any tool ready to do that.
On this network, all computers have static IPs associated, so a IP identifies a computer. The PCs have different operating systems (Windows 7, Ubuntu 10.04, Ubuntu 12.04 and more).
What's my best chance?