Getting list of live IPs in your network

We will use nmap and linux commands for finding live hosts in the network.

First, we will run nmap for network scan, I will pick small /24 network for testting.

nmap -sS xxx.xxx.xxx.xxx/xx -oA filename

This command will give you 3 different files. 

ls -l filename*

I will use scan.gnmap, Lets see what is in it? 

cat scan.gnmap

As you can see there is so much information on this file just think about it your are scanning /22 or bigger network. How are we going to get ip addresses?

cat scan,gnmap | grep open | cut -d " " -f2

If you add  " > iplist.txt " end of the line you will get iplist.txt with ip addresses showing above.