how do I scan all computers in my network with nmap?

Question

I am trying to use nmap to scan the computers on my network for conficker. I am using Windows. What do I put in the target for all computer on a given subnet?

It is running: nmap -T4 -A -v

I put in 192.168.1.0 and 192.168.1.255 but it did not work.

Thank you

Answer 1

nmap -PN -T4 -p139,445 -n -v --script=smb-check-vulns \ 
   --script-args safe=1 192.168.1.0/24

Answer 2

192.168.1.0/24 is the subnet you need to specify if all the computers you want to reach are between 192.168.1.0 and 192.168.1.255.